Author: Andrew Baker
How to Find and Set the MTU on Windows (Step-by-Step)
If you have just changed ISPs or moved house and your internet suddenly starts misbehaving the likelihood is your Maximum Transmission Unit (MTU) is set too high for your ISP. The default internet facing MTU is 1500 bytes, BUT depending on your setup, this often needs to be set much lower. Step 1: First check […]
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How to Find and Set the Optimal MTU on Mac/macOS
If you have just changed ISPs or moved house and your internet suddenly starts misbehaving the likelihood is your Maximum Transmission Unit (MTU) is set too high for your ISP. The default internet facing MTU is 1500 bytes, BUT depending on your setup, this often needs to be set much lower. Step 1: First check […]
Read more →iTerm2: Clear Scroll Back History with Command + K
I frequently forget this command shortcut, so this post is simply because I am lazy. To clear your history in iTerm press Command + K. Control + L only clears the screen, so as soon as you run the next command you will see the scroll back again. If you want to view your command […]
Read more →Check SPF, DKIM and DMARC Email Security DNS Records
There are three basic ways to secure email, these are: Sender Policy Framework (SPF), Domain Keys Identified Mail (DKIM), Domain-based Message Authentication, Reporting & Conformance (DMARC) definitions. Lets quickly discuss these before we talk about how to check if they have been setup: SPF helps prevent spoofing by verifying the sender’s IP address SPF (Sender […]
Read more →host Command DNS Queries on macOS: 9 Examples
1. Find a list of IP addresses linked to a domain To find the IP address for a particular domain, simply pass the target domain name as an argument after the host command. For a comprehensive lookup using the verbose mode, use -a or -v flag option. The -a option is used to find all Domain records and Zone […]
Read more →Scan Your Local Network With Nikto and Nmap on macOS
Nikto is becoming one of my favourite tools. I like it because of its wide ranging use cases and its simplicity. So whats an example use case for Nikto? When I am bored right now and so I am going to hunt around my local network and see what I can find… Now lets pop […]
Read more →Fix Wireshark Permission Error on macOS: ChmodBPF Guide
If you see the error “The capture session could not be initiated on the device “en0” (You don’t have permission to capture on that device)” when trying to start a pcap on wireshare you can try installing ChmodBPF; but I suspect you will need to follow the steps below:
Read more →How to Customize the Zsh Prompt in macOS Terminal
When you open terminal you will see that it defaults the information that you see on the prompt, which can use up quite a bit of the screen real estate. Customize the zsh Prompt in Terminal Typically, the default zsh prompt carries information like the username, machine name, and location starting in the user’s home […]
Read more →nmap Vulners Script: Quick Vulnerability Scanning on macOS
This is a very short post to help anyone quickly setup vulnerability checking for a site they own (and have permission to scan). I like the vulners scripts as they cover a lot of basic ground quickly with one script.
Read more →Mac Terminal: Scan TLS Certificates with NMAP and SSLScan
The below script will give you basic information on a websites certificate: NMAP is provides a simple way to get a list of available ciphers from a host website / server. Additionally, nmap provides a strength rating of strong, weak, or unknown for each available cipher. First, download the ssl-enum-ciphers.nse nmap script (explanation here). Then from the same […]
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