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Analyzing a Routing Table
 
03:48
How to interpret the routing table on a Cisco router.
Views: 115341 computingstudies1
Windows command line networking: arp, getmac
 
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The arp and getmac commands are two windows commands that are not included in all editions of windows. They deal primarily with mac addresses. They can be used to find out information about your network card and other network cards on the network. They have limited use, but it's important to know all the tools at your disposal. Providing training videos since last Tuesday. http://www.technoblogical.com Thanks for watching.
Views: 156615 Chris Walker
Computer Networking Tutorial - 39 - Routing Tables Explained
 
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Views: 82094 thenewboston
Cisco Show Interfaces Command
 
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This activereach Technical Tutorial video guides you through the various parts of the Cisco command "show interfaces" in detail. The show interfaces command might be used to check the status of your connection, or to see how much traffic is passing through your Cisco device. activereach Ltd: http://www.activereach.net
Views: 22560 activereach Ltd
Reading a Routing Table
 
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I try to give a simple explanation about how to read a routing table and the different pieces of information found on it. In this demo, I use only classful IPv4 addresses without subnetting. Each IPv4 network address is a level 1 and at the same time an ultimate route.; The targeted audience is for CCNA students and any students willing to start learning about routing.
Views: 26659 Networking Lab
Hacking 101 using the Arp command
 
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Author and talk show host Robert McMillen explains how to use the Arp command to see if a computer is live even if it doesn't respond to connection attempts. This How To Video also has audio instruction.
Views: 11647 Robert McMillen
Extended Ping Command on Cisco Routers
 
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This video describes the options under ping command and extended ping command in Cisco routers
Views: 15185 Networking Lab
Networking Commands - Arp
 
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Reading the Address Resolution Protocol cache. Could be handy...
Views: 1902 Sloan Kelly
Ifconfig command in termux
 
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The ifconfig command has been deprecated and thus missing by default on Debian Linux, starting from Debian stretch.# ifconfig -bash: ifconfig: command not found The new and recommended alternative for examining a network configuration on Debian Linux is ip command. For example to use ipcommand to display a network configuration run the following:# ip address The above ip command can be abbreviated to:# ip a If you still prefer to use ifconfig as part of your daily sys admin routine, you can easily install it as part of the net-tools package. Requirements Privileged access to your Debian Linux system is required. Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user Instructions Install ifconfig Command Using apt-get command install net-toolspackage:# apt-get install net-tools
Views: 175 Innovative Justice
3.1.1.5 Packet Tracer - Examining a Redundant Design
 
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In this activity we will observe how STP operates, by default, and how it reacts when fault occur. Check for STP convergence Examine the ARP Process Test redundancy in a Switched network
Views: 4759 Tech Acad
Ping, Arp, Ipconfig, Tracert Walkthrough - Video Tutorial
 
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Learn the basics first. Essential command line tools for hackers, students, network admins and geeks.
Views: 35679 Crazy PC Dudes
Wireshark - Finding a Network device With ARP's
 
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Hunting For Devices With ARP's And Wireshark It always gives me sense of satisfaction when I have a challenge and can leverage some knowledge to figure out. Today I was in the lab and was powering on two Cisco switches when I noticed that they weren't labeled with their IP addresses. I'm not sure why I did not label them, but now I have to pay for it. For those of you who have not been in this situation before I will explain. My switches have a DB9 serial connection and of course good luck finding a computer with a serial port. So now I have to rummage through the box of wires to find the serial to USB adapter. I have had to buy a second one in 2 years since my original does not have a Windows 7 driver, but I digress. After I find the cable, I have to find the installation disk because last week I migrated to a new laptop.... I'm sure you get the picture. On to plan B. I know the switches have IP addresses since I hard code IP addresses on all of my switches. Now here's where a bit of knowledge comes in. I know that when a device powers up and either obtains an IP addresses via DHCP/BOOTP or statically has an IP assigned it will send out a specific ARP called a gratuitous ARP. Perfect, now all I have to do is make sure the switch port is connected to my subnet, start any protocol analyzer (I chose Wireshark) and power up the switches. In this video I show you how to find the Gratuitous ARP quickly, create a display filter and lastly, locate the 2 switches' IP addresses. Enjoy
Views: 19708 The Technology Firm
Linux Tip: 10 Network Terminal Commands
 
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ifconfig ping netstat -r dig nslookup route host arp -e iwconfig hostname
Views: 43 N2F IT TIPS
Telnet and SSH: Capturing and examining tips | Pluralsight
 
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Telnet and SSH: Capturing and examining tips | http://www.pluralsight.com/courses/wireshark-introduction In this video, Pluralsight author Ross Bagurdes shows you how to capture and examine Telnet and SSH in Clear Text. In the full course, we walk through the basics of Wireshark. Because Wireshark only captures what it sees on the network, we will also describe common protocols, and examine their operation using Wireshark captures. Wireshark is an amazing utility designed to give network engineers the ability to see into network communications in real time. Since it is a community-supported application, it is free to users! In this series, we walk through all of the basics you need to get yourself familiar with what Wireshark is doing, as well as how you can use Wireshark to examine the operation of network protocols. First, we examine what Wireshark is doing during a packet capture, and then we move into some of the options available to capture traffic, including capturing traffic on more than one interface, as well as using the command line interface on systems to capture traffic. Next, since Wireshark parses out the headers of each piece of data it captures, you're able to examine the header at each layer of communication. In this series, we take a look at ARP, ICMP(used for Ping), TCP, HTTP, DNS, Telnet, and SSH. Visit us at: Facebook: https://www.facebook.com/pluralsight Twitter: https://twitter.com/pluralsight Google+: https://plus.google.com/+pluralsight LinkedIn: https://www.linkedin.com/company/pluralsight Instagram: http://instagram.com/pluralsight Blog: http://blog.pluralsight.com/ 3,500 courses unlimited and online. Start your 10-day FREE trial now: https://www.pluralsight.com/a/subscribe/step1?isTrial=True Telnet and SSH: Capturing and examining tips | Pluralsight -~-~~-~~~-~~-~- Push your limits. Expand your potential. Smarter than yesterday- https://www.youtube.com/watch?v=k2s77i9zTek -~-~~-~~~-~~-~-
Views: 6178 Pluralsight
Find all local IPs and MAC Address with arp-scan
 
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A quick way to scan all IP's on your subnet. http://BASHscripts.info
Views: 125536 Kris Occhipinti
NETSTAT Command O Level Solved Paper
 
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For More Study Material Visit our website: www.olevelprojects.com www.olevelprojects.co.in We are making the best study material for you and will deliver it as per the modern trend of NIELIT exams. Those people who can't afford coaching classes will be directly benefited from this channel. Spread the word OLevelProjects.com , encourage us to becoming the best community there for we can deliver best education for you . This Video Covers following searches: netstat command explanation in Hindi netstat command in linux netstat command linux netstat command O Level internet technology netstat command for windows netstat command windows netstat command in cmd netstat command in networking netstat command use netstat command output netstat command examples netstat command syntax netstat command definition netstat command explained netstat command in solaris netstat command line netstat command mac netstat command on linux netstat command options netstat command prompt netstat command windows 10 netstat command windows 7 netstat command windows server 2008 r2
Views: 200 O Level Projects
RouterGods - ARP command line
 
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A look at ARP from the command line Humphrey Cheung Southern California RouterGods Meetup Group www.routergods.com
Views: 7265 routergods
Using Arp On Your Network
 
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Linux Journal's Shawn Powers shows you how to view the arp table to find ip addresses.
Views: 4226 linuxjournalonline
Advanced Windows Logging - Finding What AV Missed
 
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01:00 - Explaining the HELK Architecture 02:50 - Showing my VM's Spec's/build 03:50 - Installing HELK 05:40 - Poking around HELK's Logstash container to see how it works 08:40 - Examining HELK Elastalert to view sigma rules 09:08 - The magic behind catching APT! (sorry did it for the keywords) 11:58 - The SafetyKeyz Sigma rule, could easily be avoided 12:58 - Start of Windows 13:20 - Building a Sysmon Config with Sysmon-Modular - https://github.com/olafhartong/sysmon-modular 17:20 - Enabling Other Logging 18:00 - Enabling Command Line Logging with arguments - Computer/Windows/SecuritySettings/SecurityOptions/Audit: Force Audit policy - Computer/Windows/SecuritySettings/AdvancedAudit/DetailedTracking/AuditProcessCreate - Computer/AdminTemplates/System/AuditProcessCreation 20:00 - Enabling Powershell Module and Script Block Logging - Computer/AdminTemplates/WindowsComponents/WindowsPowershell/ - Create Profile.ps1 in c:\windows\system32\WindowsPowerShell\v1.0 -- Variables: $LogCommandHealth and $LogCommandLifeCycleEvent = $true 23:00 - Enabling Task Scheduler History/Logging 23:25 - Downloading and installing WinLogBeat (If you have issues, try version 6.7 of WinLogBeat, 7 is now out and HELK is not ingesting) 27:05 - Logging into HELK and start of searching the logs! 28:45 - Searching Process Create Events (4688) and finding the commands we ran earlier 29:53 - Testing the Powershell logging to detect downloading and executing a script 37:00 - Detecting mimikatz accessing LSASS 39:40 - Deep dive into Mimikatz to identify how it accesses LSASS.EXE to create a signature, what is 0x1010 process grant? 44:30 - Showing the Process Creation stuff in real time. 47:25 - Examining the SysMon Dashboard 48:00 - Viewing the SIGMA Rules and how to clean up noisy ones. ** Really good blog post: https://posts.specterops.io/what-the-helk-sigma-integration-via-elastalert-6edf1715b02 ** 50:00 - Deep dive into the SIGMA Rule setup - python -m elastalert.elastalert --debug --rule 51:30 - Discovering the mistake in the SIGMA to Elastalert conversion (realert:0) 52:00 - Debugging Elastalert Rules
Views: 10931 IppSec
Network monitor for router default route system of network model
 
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You can get the packet tracer file and full post from here: Hi, at first I would like to thanks to you, because of your continuing interest in computer networking. Today we will do network monitor task by examining a packet traveling. We’ll see how the packets travel through which path. We’ll use a topology in which the packet will travel to another path and packet will not travel to another path. Network monitor for router default route system of network model http://whilenetworking.com/2016/09/05/network-monitor-router-default-route-system-network-model/ We’ll do all this tasks using the powerful network simulator named cisco packet tracer. This simulation tool is provided by cisco. It is recommended to use cisco packet tracer latest versions. If you don’t have the cisco packet tracer latest version, you can download it from this whilenetworking.com blog. So it can say that, you have downloaded and installed the latest cisco packet tracer.
Using iperf to Measure Application Throughput in the Internet
 
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Demonstration of using iperf to measure performance of a network between a client and server. Shows how to run iperf on the command line in Ubuntu Linux to perform both TCP and UDP performance tests. Command used: iperf. Created by Steven Gordon on 27 January 2012 at Sirindhorn International Institute of Technology, Thammasat University, Thailand.
Views: 45133 Steven Gordon
route for Viewing Routing Tables in Linux
 
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Use route to view a Linux routing table, as well as add and delete routes. Uses a client-router-server virtual network within VirtualBox
Views: 2455 Steven Gordon
Network Signatures
 
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Summary Signature analysis, brief introduction to the Snort IDS, analysis of ICMP packet capture, common TCP/UDP ports, network baselining, the TCP 3-way handshake, and review of TCP flags. 3:26 - Example of Snort IDS rules 9:45 - md5sum usage 14:45 - ifconfig command in Linux 15:22 - Using tcpdump for packet capturing 17:05 - Viewing packet captures with tcpdump 20:09 - Examining ICMP packet captures 20:54 - Using ipconfig in Windows 23:20 - Well known port numbers 27:19 - Examining the TCP 3-way handshake in packet captures Reference Materials Guide to Network Defense and Countermeasures - Chapter 4 Wireshark 1.9 manual: https://cet4663c.pbworks.com/w/file/62450910/4663_Wireshark_manual.pdf The Great Debate: Network vs Protocol Analysis: http://www.symantec.com/connect/articles/great-ids-debate-signature-analysis-versus-protocol-analysis
Route Print windows Explained
 
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This is a video on two common uses of the command route. Route allows you to see your computers routing table. That's the table that your computer uses to decide if information on the network is addressed to it. The route command can also help your computer decide how to route packets when there are two directions that it can go to connect to other networks. For Route Print Explained PART 2, https://youtu.be/oywqJPkVziU
Views: 3799 NetworkTalks
How to Check Arp Cache
 
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How to Check Arp Cache | Windows command line networking: arp, getmac | Examining ARP and Routing Tables | Clear ARP Cache in Windows | How Clear ARP cache command mode Windows 7,8,8.1,10 | How To Clear The ARP Cache
Views: 147 EME Technologies
DEFCON 20: Hacking the Google TV
 
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Speakers: AMIR "ZENOFEX" ETEMADIEH | CJ HERES | DAN ROSENBERG | TOM "TDWENG" DWENGER The GoogleTV platform is designed to bring an integrated web experience, utilizing the Chrome web browser and Android applications, to your television. GoogleTV is based on the Android operating system, which is mainly used in tablets and smart phones, but customized with security features not normally seen on most Android devices. The current version of the platform utilizes signatures to establish a “chain of trust” from bootloader to system applications. This presentation will focus on the current GoogleTV devices, including X86 platform details, and the exhaustive security measures used by each device. The presentation will also include video demonstrations of previously found bugs and exploits for each GoogleTV device and includes specific details about how each bug works. Furthermore, we will include interesting experiences that the team has encountered along the way. Finally the talk will be capped off with the release of multiple unpublished GoogleTV exploits which will allow unsigned kernels across all x86 devices (Revue / Sony GoogleTV). Amir "Zenofex" Etemadieh founded the GTVHacker group and has been working on the GTVHacker project from its initial start in November 2010. Amir has done independent security research in consumer electronics including the Logitech Revue, Ooma Telo, Samsung Galaxy S2, Boxee Box and services such as the 4G Clear Network finding both hardware and software flaws. Twitter: @zenofex http://blog.gtvhacker.com http://www.gtvhacker.com CJ Heres is an IT consultant during the day, tinkerer at night. He enjoys examining and repairing all sorts of devices from cars to blu-ray players. His philosophy is to use a simple approach for complex problems. CJ’s recent work includes Sony GoogleTV, Boxee Box, and Vizio Smart TV’s. Twitter: @cj_000_ Dan Rosenberg Dan Rosenberg is a vulnerability researcher who takes sick pleasure in exploiting anything with a CPU. He once punched an Android in the face. Twitter: @djrbliss Tom "tdweng" Dwenger is a software engineer who has been developing and reversing Android for the last 2 years. Tom is known for being able to quickly reverse Android applications and has been an active member of the GTVHacker team since its initial start in 2010. Twitter: @tdweng For more information visit: http://bit.ly/defcon20_information To download the video visit: http://bit.ly/defcon20_videos Playlist DEFCON 20: http://bit.ly/defcon20_playlist
Views: 6554 Christiaan008
Find the IP Address of a Device connected to a Cisco Switch
 
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This quick tip shows you how to find the IP address of a device connected to a specific port on a Cisco Switch. This tutorial demonstrates practical uses for the sh mac address-table and sh arp command.
Views: 66431 Rick Bodnar
Ten Ways Zeek Can Help You Detect the TTPs of MITRE ATT&CK
 
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Techniques, tactics, and procedures (TTPs) are useful for characterizing patterns of adversary behavior, such as sending a spearphishing attachment for initial access or using the Remote Desktop Protocol to move laterally in a target environment. To comprehensively track TTPs and develop corresponding defense strategies, security pros increasingly turn to MITRE ATT&CK™, a TTP repository based on real-world observations. While no single technology nor process can cover all TTPs, did you know that the Zeek Network Security Monitor (formerly “Bro”) can give you powerful visibility and detection against critical TTPs in the MITRE ATT&CK™ framework? Tune into this webcast to hear from world-class security operators Richard Bejtlich and James Schweitzer as they dig into the MITRE framework and review concrete, step-by-step examples of how you can use Zeek to significantly improve your visibility and defenses against lateral movement (TA0008), data exfiltration (TA0010), and command and control (C2) (TA0011) tactics.
Views: 927 Corelight, Inc
SSH on the Command Line -- 1: The Absolute Basics
 
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Check out the full SSH playlist at https://www.youtube.com/playlist?list=PLtK75qxsQaMII75AbcuIruao1k2qdxwjg Expand for video details + links. This is a quick tutorial on the how to remotely connect to server and other Linux machines, using the command line. These commands are the same on all Linux and Unix distributions, and form the basis of how professional System Administrators manage multiple machines. SSH is an amazing tool, and can do *so much more* than just getting you a remote shell. From "poor-man's-vpn" services to local forwarding, if the job requires an encrypted tunnel between two machines, SSH is ready for it. ################### More Free Linux Tutorials ################### Full Linux Sysadmin Basics Playlist: https://www.youtube.com/playlist?list=PLtK75qxsQaMLZSo7KL-PmiRarU7hrpnwK Check out my project-based Linux System Administration course (free sample videos): https://www.udemy.com/hands-on-linux-self-hosted-wordpress-for-linux-beginners/?couponCode=tl35 Patreon: https://www.patreon.com/tutorialinux Official Site: https://tutorialinux.com/ Twitter: https://twitter.com/tutorialinux Facebook: https://www.facebook.com/tutorialinux
Views: 34458 tutoriaLinux
How to Trace a MAC Address (on Cisco)
 
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http://www.ciscozine.com/2011/01/12/how-to-trace-mac-address/ The traceroute mac command output shows the Layer2 path when the specified source and destination addresses belong to the same VLAN. If you specify source and destination addresses that belong to different VLANs, the Layer 2 path is not identified, and an error message appears.
Views: 8594 José Oliveira
Cool Cisco IOS Commands - debug interface
 
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When you are performing debugs you have at least two concerns: 1) making sure the that debug does not clobber the CPU of your device, and 2) filtering the debug output to get to the information that you need for troubleshooting your issue. The debug interface command can help you with the second issue. In many cases (especially on production equipment) you may have a lot of interfaces running the protocol that you are troubleshooting. When you enable a debugging command (like debug ip ospf hello), the output that will be returned is for all interfaces running that protocol. This can quickly overwhelm you with information and make troubleshooting more difficult/time consuming. The debug interface command allows you to limit the debug output to a specific interface.
Views: 11008 packetlab
Address Resolution Protocol (ARP) in less than 5 minutes
 
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Address Resolution Protocol, or ARP, exists to create a mapping between an IP address to a MAC address. ARP's behavior differs whether you are communicating with a host on the local network, or a foreign network. This video explains traditional ARP in less than 5 minutes. But there are additional iterations of ARP, such as Gratuitous ARP, Proxy ARP, and ARP Probes and Announcements. To learn the functionality of each, check out the ARP Article Series at Practical Networking .net: http://pracnet.net/arp http://www.practicalnetworking.net
Views: 28024 Practical Networking
Address Resolution Protocol (ARP) Explained
 
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https://nwl.cl/2xthPQM - ARP (Address Resolution Protocol) is used on Ethernet (LAN) to find the MAC address of another host. When a host on the network doesn't know the MAC address of the device it wants to reach, it will broadcast an ARP request. All hosts on the segment will receive this ARP request and one of them will respond with an ARP reply. In this ARP reply, you will find the IP address and MAC address of the destination host. Once the host that sent the ARP requests receives this information, it will be able to reach the destination.
Views: 279658 Networklessons.com
11.3.4.6 Lab - Using the CLI to Gather Network Device Information
 
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CCNA Routing and Switching - Introduction to Networks 6.0 - 11.3.4.6 Lab - Using the CLI to Gather Network Device Information CCNA Routing and Switching - Introduction Networks 5.1 - 11.3.4.6 Lab - Using the CLI to Gather Network Device Information CCNA Routing and Switching - Introduction Networks - 11.3.4.6 Lab - Using the CLI to Gather Network Device Information Download DOC file: https://drive.google.com/file/d/0B0PJN0z8d6HRS1QwYW1Qd0twdE0/view?usp=sharing Download Packet Tracer and Source Files: http://techemergente.blogspot.com/p/ccna-routing-and-switching-curso-gratis.html
Advanced Network Device Troubleshooting & End to End Visibility
 
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Learn more about SolarWinds Network Performance Monitor http://bit.ly/NetworkDeviceTroubleshooting. Ensuring applications and services are fast, secure, and available is a key responsibility of every network engineer. Whether your applications are hosted internally or in the cloud, or rely on advanced network devices, having end-to-end visibility of the health and performance of your network is paramount to ensuring your users will have the services they need. Join Chris O’Brien, SolarWinds product manager, as he demonstrates some of the advanced monitoring capabilities of SolarWinds Network Performance Monitor v12. See details about the individual member switches as well as the health of the stack with Cisco Switchstack monitoring. Get a comprehensive view of your F5 load balancing environment to see how an application or service is affected by various components through the delivery chain with Network Insight for F5® BIG-IP® . Lastly, discover and troubleshoot network paths hop-by-hop regardless of their location, on-premises, in the cloud, or in a hybrid network in NetPath™ Services. Connect with SolarWinds: thwack Community: http://thwack.solarwinds.com/ Facebook: https://www.facebook.com/SolarWinds Twitter: https://twitter.com/solarwinds LinkedIn: http://www.linkedin.com/company/solarwinds Instagram: http://instagram.com/solarwindsinc/ Flickr: http://www.flickr.com/photos/solarwinds_inc/
Views: 2190 solarwindsinc
Command Prompt | ARP (Address Resolution Protocol) !!
 
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SUBSCRIBE TO MY GAMING CHANNEL! https://www.youtube.com/channel/UCtlEBZ-6A9bcawGh9QOkX9Q Command Prompt | ARP (Address Resolution Protocol) Please Subscribe! Twitter: https://twitter.com/TheTechSpaceYT Facebook: https://www.facebook.com/TheTechSpaceYT/ Google+: https://plus.google.com/u/0/+IIntroI Xbox: https://account.xbox.com/en-US/Profile?xr=mebarnav Steam: https://steamcommunity.com/id/Introhz/
Views: 4693 TheTechSpace
Using Bro to Hunt Persistent Threats by Benjamin Klimkowski
 
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Originally recorded September 13, 2017 In this presentation, we demonstrate how Bro can be used to successfully detect malicious traffic from compromised machines to a remote command and control (C2) server. Specifically, our team focused on detecting Cobalt Strike, a popular penetration tool. Cobalt Strike possesses a sophisticated callback mechanism that uses common protocols to beacon back to a remote C2 server and fetch instructions. From the remote server, attackers can send C2 instructions to processes running on the compromised hosts. This stored-and-forward architecture is designed to avoid detection, blending in with ordinary traffic. Our team will present how we used Bro and other tools to discover indications of compromise (IOCs) from past datasets, and then used this insight to develop Bro scripts that detected those IOCs on a live network. Our techniques were evaluated during the 2017 Cyber Defense Exercise, where undergraduates compete against the Nation Security Agency (NSA) Red Team. Additionally, we will provide observations how Bro performed as part of a greater security architecture, which included the Snort Intrusion Detection System and an implementation of an Elasticsearch, Logstash, Kibana monitoring suite. Slides: https://www.bro.org/brocon2017/slides/persistent_threats.pdf
Views: 2572 Zeek
Linux Networking Basics Part-IV (ARP)
 
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In part IV of our Linux Networking Video Seriess we will take a look at ARP Address Resolution Protocol and try to understand the mystery behind this protocol. I hope after watching this video you will have a good basic understanding about ARP protocol. Keep watching ! Thanks, Sal
Views: 4367 Linux King
Examining ISAIAH THOMAS new ROLE w/ CELTICS
 
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Examining ISAIAH THOMAS new ROLE w/ CELTICS Jared Weiss (@JaredWeissNBA) of CLNS Media and CelticsBlog joins @SamSheehan and @EvanValenti to discuss the Celtics cap situation and whether Isaiah Thomas will command a max deal and for how long. 0:45 How many years will Isaiah Thomas get and will it be a max? 8:30 How much tax will Celtics be willing to pay? 13:30 Should Celtics extend Marcus Smart? How realistic is this? Subscribe to the Boston Celtics Newsfeed available on your favorite podcast app. Follow us on Twitter: @CLNSRoundtable _____________________________________________________________ Follow @CLNSMedia on Twitter Subscribe to CLNS Media YouTube Channel Download the free CLNS Media Mobile APP for Android & iOS Support our sponsor: Hello Fresh! Go to www.HelloFresh.com and use promo code BEAT30 for THREE FREE meals & Free Shipping A Production of CLNS Media Network. -~-~~-~~~-~~-~- Please watch: "FULL KYRIE IRVING and GORDON HAYWARD CELTICS Press Conference" https://www.youtube.com/watch?v=f7FoDj4-Nzw -~-~~-~~~-~~-~-
Views: 3711 CLNS Media Network
Sysctl command (Linux Tutorial)
 
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"sysctl" is a tool for examining and changing kernel parameters at runtime. sysctl is implemented in procfs, the virtual process file system at /proc/. Commands used - sysctl -a (to view all loaded parameters) sysctl -p (to load all parameters from /etc/sysctl.conf) /proc/sys (to temporarily change kernel parameters)
Views: 3421 Tech Tuxedo
Linux How To view Log Files
 
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Linux How To view Log Files Log files are files that contain messages about the system, including the kernel, services, and applications running on it. There are different log files for different information. For example, there is a default system log file, a log file just for security messages, and a log file for cron tasks. Log files can be very useful when trying to troubleshoot a problem with the system such as trying to load a kernel driver or when looking for unauthorized log in attempts to the system. This video discusses where to find log files, how to view log files. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosni... 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Check Bad Blocks Or Bad Sectors On a Hard Disk In Linux https://www.youtube.com/watch?v=jE-I9... 🌸 Linux How To Partition a Hard Drive Using the Parted Command https://www.youtube.com/watch?v=2IoEW... 🌸 Checking or Repairing a File System using fsck in Linux https://www.youtube.com/watch?v=CcV_M... 🌸 How To Monitor the Health of Your Hard Drive in Linux using SMART https://www.youtube.com/watch?v=z1z9R... 🌸 Linux iotop: Monitor your disk Input/Output https://www.youtube.com/watch?v=pWG4v... 🌸 How To use the “du” (Disk Usage) Command in Linux https://www.youtube.com/watch?v=RA4bM... 🌸 How To View Manipulate System Logs In Linux Using Journalctl Command https://www.youtube.com/watch?v=NE-fT-Fwvgw&t=3s 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://www.youtube.com/watch?v=aIMbg7vG6Rg&t=10s 🌸 Linux cURL Command Tips and Tricks https://www.youtube.com/watch?v=hA3BAALWFJI 🌸 Linux tail and multitail commands https://www.youtube.com/watch?v=QnPyWNyCn-U 🌸 Linux How To view Log Files https://www.youtube.com/watch?v=CEYhs_9L01M&t=2s 🌸 How To use the History Command On Linux https://www.youtube.com/watch?v=RkxIWlypB-s 🌸 Tips and Tricks How To manipulate Text Files on Linux https://www.youtube.com/watch?v=Zk9M1w55XO0 🌸 How to Archive, Compress and Extract Files Using the tar Command on Linux https://www.youtube.com/watch?v=8j-ZzOfbclM&t=2s 🌸 Linux - How to split larger files into smaller parts https://www.youtube.com/watch?v=DaC5AWjmQXk 🌸 Linux commands : Top https://www.youtube.com/watch?v=RM7ck63mcHQ ***********************************************************************
Views: 21189 Liv4IT
arp for Showing Address Resolution Table in Linux
 
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Use arp command in Linux to show ARP table, as well as delete entries from ARP table.
Views: 2005 Steven Gordon
DEF CON China 1 - Chuanda Ding - I Am Groot: Examining the Guardians of Windows 10 Security
 
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Being one of the main targets of 3 Pwn2Own competitions, Microsoft Windows 10, along with Microsoft Edge, is proven more and more difficult to exploit. Now Windows 10 has been released for more than 2 years, Microsoft has been constantly updating the security mitigations integrated with the operating system. After 5 major releases, multiple levels of protections have been added to prevent a programming error from turning into a full system compromise. You may have heard many of them marketed as "Guards" under the Windows Defender brand. But how do they actually work? As Pwn2Own participants (and winners), we closely watched Windows 10 security evolve over the years. In this talk, you will get a behind-the-scene view of Windows 10 security mitigation implementations, how it helped make attackers' life harder, and how the attackers overcame it.
Views: 8315 DEFCONConference
70-410 Objective 4.3 - DNS Resource Records and NSLookup in Windows Server 2012 R2 Lab 4
 
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In this video we will be investigating Objective 4.3 Deploying and Configuring DNS Service in Windows Server 2012 R2. We will look at the various resource records that can be created in DNS on Windows Server 2012 R2. We will specifically look at the resource records as they pertain to the objectives for the 70-410 exam, since they are many records and you’ll probably never use some of them during your whole career in IT. We being by opening a command prompt and starting the NSLookup command, which should be used in lieu of the PING command. We use NSLookup because it bypasses the DNS Client Service cache and it allows up to query records other than just the host records. We start by using NSLookup to query an A Record or Host Record and monitoring it’s behavior with appending the domain name. We then us NSLookup to resolve a AAAA Host Record for IPv6. We then create a new A Record or Host Record in DNS and query it with NSLookup. We will then create two CName Records otherwise known as Alias Records which point to an A Record and we examine the behavior of name resolution. I will then explain the relevance of creating Alias Records in lieu of multiple A Records. We then examine the Start Of Authority or SOA using the NSLookup command and learn how to effectively use the NSLookup command to change types of queries. We then look at how to add a new NS Record or Name Server Record and query it with NSLookup. We then look at the relevance of MX Records or Mail Exchanger Records, along with the use of priorities. We also look at have to query them with the NSLookup utility. We then look at how to create other record types and the options we have, we will specifically look at TXT Records and their possible uses. Lastly we use the skills learned in this video to lookup records on the Internet for Gmail.com and Yahoo.com examining: NS Records, TXT Records and MX Records. Begin by opening the DNS MMC - 0:16 Using NSLookup vs PING - 0:29 Default record type of NSLookup - 0:50 Setting the NSLookup command to the IPv4 DNS Server - 0:54 Resolving a Host Record with NSLookup - 1:10 Resolving a AAAA or Quad A Host Record - 2:03 How To create a new Host Record in DNS - 2:30 How To create an Alias Record or Canonical Name - 3:28 Querying an Alias Record with NSLookup - 4:20 Why Alias Records are used - 4:45 Examining the SOA record with NSLookup - 6:00 How To add a new NS Record - 6:40 Examining the NS Records with NSLookup - 7:44 How To Create MX Records - 8:28 How To Query MX Records with NSLookup - 9:52 How To Create Other Record Types - 10:38 Creating a TXT Record - 11:13 Querying TXT Records with NSLookup - 12:03 Querying real Resource Records on the Internet - 12:57
Views: 9149 NetworkedMinds
SSH configuration and Wireshark captures - Telnet bad, SSH good. Pass your CCNA Exam.
 
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You should not be using Telnet! You should be using SSH. In this video I capture passwords using Wireshark from a Telnet session and configure SSH on a Cisco router. Go here to access my full GNS3 CCNA course: http://goo.gl/ZGlJGq The course includes: 1) Video Training 2) Simulations 3) GNS3 Lab Guides 4) Quiz questions to help you prepare for the exam 4) Software to create IPSec VPN tunnels 5) Software and calculators All the best with your CCNA exam preparation!
Views: 3095 David Bombal
Understanding Proxy Arp & How not to setup static routes
 
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A brief summary of proxy ARP followed by a demonstration of effects it may be having on your router.
Views: 33704 Ryan Lindfield
Authentication
 
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Summary Types of authentication, detailed explanation of password hashing, examples of bad password choices, password cracking methods, and coverage of password security on Unix and Windows systems. 2:55 - Examining the /etc/passwd file in Linux 5:08 - Examining the /etc/shadow file 5:53 - Example of hashed password Reference Materials Guide to Network Defense and Countermeasures - Chapter 1 (pgs. 28-29), Chapter 3 (pgs. 99-100) Additional Information Configuring auditing policies in Windows: http://technet.microsoft.com/en-us/library/dd277403.aspx Top 5 security settings to audit: http://www.windowsecurity.com/articles/top-5-security-settings-audit.html
Lab 2.1.2.10- Building a Switched Network with Redundant Links - Demonstration CCNA 3 Chapter 2
 
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Objectives Part 1: Build the Network and Configure Basic Device Settings Part 2: Determine the Root Bridge Part 3: Observe STP Port Selection Based on Port Cost Part 4: Observe STP Port Selection Based on Port Priority Background / Scenario Redundancy increases the availability of devices in the network topology by protecting the network from a single point of failure. Redundancy in a switched network is accomplished through the use of multiple switches or multiple links between switches. When physical redundancy is introduced into a network design, loops and duplicate frames can occur. The Spanning Tree Protocol (STP) was developed as a Layer 2 loop-avoidance mechanism for redundant links in a switched network. STP ensures that there is only one logical path between all destinations on the network by intentionally blocking redundant paths that could cause a loop. In this lab, you will use the show spanning-tree command to observe the STP election process of the root bridge. You will also observe the port selection process based on cost and priority. Note: The switches used are Cisco Catalyst 2960s with Cisco IOS Release 15.0(2) (lanbasek9 image). Other switches and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and output produced might vary from what is shown in the labs.
Views: 19406 Astrit Krasniqi
Rhino3d Tutorial - Engine Cover - Adding Local Detail (2 of 3)
 
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Simply Rhino’s senior trainer, Phil Cook, has created a series of videos examining the creation of a styling model for an engine cover that will ultimately be exported into SolidWorks. In this video, the second in the series, Phil examines adding local detail to the engine cover model created previously. In modelling the air duct detail there are two main considerations. First, it’s important to create a seamless transition between the main surface and the lead in to the duct and second it’s important to control the edge blends so that they transition between a relatively straightforward corner blend to run out completely into the main engine cover surface. These are both common situations in 3D surface modelling even though the specific context might be different. With the duct detail completed, Phil looks at creating the centre blend to join the two symmetrical engine cover halves before checking that the geometry is optimised for exporting. Simply Rhino are the UK's most popular supplier of Rhino3d Software including all plug-ins for Rhinoceros - if you'd like to learn more about the software we can supply, the training we offer and of course the expert support we give for all the products we sell then visit our website at www.simplyrhino.co.uk