Linux

Seven Awesome Linux Terminal Utilities for Everyone

Post Views: 3,466 If you are a Linux user, you know how important the Terminal is to your compute world.  Here are Seven Awesome Linux Terminal Utilities for Everyone. Now there are a bunch of different Terminals in Linux, this article is not about that, but I like Tilix the best: sudo apt install tilix

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How do I install / upgrade Wireshark in Ubuntu Linux?

Post Views: 4,097 How do I install / upgrade Wireshark in Ubuntu Linux?  First things first – the Wireshark downloads page is here: https://www.wireshark.org/download.html I know I have put the answer to this in other articles over the years (like this one), but I think it is appropriate to answer the question directly and specifically.

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3 Ways to put your Wi-Fi Interface in Monitor Mode in Linux

Post Views: 11,435 Check out these great references as well:  Our Wireless custom profile for Wireshark  Our Udemy course on Wireless Packet capture  Our other Wi-Fi related articles If you are like me, you count on the Internet to help with how to’s especially when using Linux.  That said, sometimes the information can be contradicting

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Creating Delay to a Subnet Tech Tip

Post Views: 1,856 I received a question on how to create a delay to a subnet using GNS3.  Emulating delay on a subnet allows engineers to replicate real-world latency conditions in a controlled lab environment. Production networks—especially broadband, MPLS, SD-WAN, Internet, satellite, or cellular transport paths—rarely behave like low-latency LANs. By introducing deterministic round-trip delay,

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Detecting ECMP in Linux using Paris and Dublin Traceroute

Post Views: 8,334 Equal-Cost Multi-Path (ECMP) is a forwarding mechanism for routing packets along multiple paths of equal cost with the goal to achieve almost equally distributed link load sharing. This, of course, significantly impacts a router’s next-hop (path) decision. For further details, look at RFC 2991, “Multipath Issues in Unicast and Multicast Next-Hop Selection,”

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Wi-Fi Network Monitoring & Manipulation in Parrot Linux

Post Views: 25,170 Check out these great references as well:  Our Wireless custom profile for Wireshark  Our Udemy course on Wireless Packet capture  Our other Wi-Fi related articles Let’s talk about Wi-Fi Network Monitoring & Manipulation in Parrot Linux. If you are doing anything regarding security or penetration testing you know Linux is the only

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Deleting Remembered Wi-Fi Networks in Windows, MacOS, and Linux (Debian)

Post Views: 3,523 If you attend our WLAN Operations course, one of the things we discuss is Active Scanning.  Your system uses your saved Wi-Fi networks to actively scan for those networks (probing).  There are potential security risks in this, especially with free networks.  Most students conclude they should not remember networks in this way. 

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TLS Decryption in Wireshark Using Key Log Files in Windows, MAC, and Linux

Post Views: 8,436 Hi everyone!  Being able to decrypt the encrypted contents of packet captures is very important if you want to troubleshoot anything above Layer 4.  This is even more important today as the network is evolving to QUIC where everything is encrypted. Check out these great references as well:  Our custom profiles repository

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Capturing Wi-Fi WLAN Packets in Wireshark on Linux

Post Views: 8,314 Check out these great references as well:   Our Wireless custom profile for Wireshark  Our Udemy course on Wireless Packet capture  Our other Wi-Fi related articles At a recent course I taught in New England, one of the students wanted to capture Wi-Fi packets on their Windows Surface Pro.  Of course, I referred

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Setting up a SSH Server in Ubuntu Server 10.x and above

Post Views: 1,654 This is really simple.We have chosen OpenSSH as the best software for the job.  Begin by opening a Terminal Window on the server.  Enter the following command to install OpenSHH:sudo apt-get install openssh-server Done! To test that it’s working, you can try to ssh into the server: ssh localhost You will be

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