bash - Etherarp

Verify TLS Servers with Random Art

08 Sep 2019 on security, web security, tls, ssh, bash

I've always loved the RandomArt feature in SSH that is used to display a visual representation of a peer's public key. I thought it would be great to extend this to TLS.…

Generating Memorable Hostnames for a Subnet

14 Aug 2019 on bash, networking, scripting

This is a simple Bash script I wrote to generate memorable names for an IP address space. The names are camelCase word pairs obtained by shuffling a list of the thousand most common English words. This produces readable and memorable hostnames, e.g. FormerAbility.…

Reverse Port Forwarding with Bash

02 May 2019 on linux security, bash, firewall

I had wondered for a while how SSH reverse port forwarding works. RPF allows you to publish any reachable port upstream to a server. This allows you to act as a server without having to open any external ports.…

Sed Substitution Cheatsheet

02 Aug 2018 on scripting, bash, linux

This is a comprehensive list of examples for the sed (stream editor command). This command is used to find, replace, refactor, and modify text.…