IPTables and order of rules Added an iptables rule but getting “connection reset by peer” or you still cannot connect, then read on. Run this command: sudo iptables -L –line-numbers Always backup your existing rules first: sudo iptables-save > savedrules.txt This is how you can restore your rules if you Read more
Symlink your Google Chrome cache to /tmp Refer two posts down on how to move your /tmp folder to memory (tempfs). Now symlink your Google Chrome (or Firefox) cache to /tmp (which resides in memory). rm -rf ~/.cache/google-chrome ln -s /tmp ~/.cache/google-chrome
Ubuntu performance and security of /tmp Remember to set the sticky bit as well as nodev, noexec and nosuid for /tmp. Here is a line in fstab and the meaning of these 3 taken from the mount man page: nodev Do not interpret character or block special devices on the Read more
Automate RKHunter, ClamAV and email reports For a while now I wanted to post this. I am running this on my PC at home because I don’t feel like doing it manually every day/week/month etc, and also because I don’t use it that often, but I still want to make Read more
SSD performance tip 1 Here is an excellent resource. A bit long but really great! https://sites.google.com/site/easylinuxtipsproject/bugs#TOC-Hibernate-and-suspend-don-t-always-work-well:-they-make-some-computers-malfunction-or-even-enter-a-coma I recently bought myself an SSD hard drive for my old notebook. Well worth it! You need to make a few tweaks though to get ultimate performance and lifetime out of it. This is Read more
Ubuntu performance and Swappiness Wait what? Is swappiness even an actual word? According to Google Chrome’s built in spell checker and most probably any dictionary it is not, but to any Linux user and expert out there, it most definitely is. So what is swappiness? According to Wikipedia swappiness is Read more
Plex not seeing NTFS external hard drive type sudo blkid. You will get output like this: /dev/sda1: UUID=”9081b56d-8715-49f3-a35d-529a39d5780e” TYPE=”ext4″ PARTUUID=”c8168d71-01″ /dev/sda5: UUID=”fbd90bd5-6b1a-4088-8569-0afbf0faebab” TYPE=”swap” PARTUUID=”c8168d71-05″ /dev/sdb1: UUID=”79a6887b-0168-464e-9507-84cc1233fcb6″ TYPE=”ext4″ PARTUUID=”c3072dd0-01″ /dev/sdc1: UUID=”4E65750852A3B04A” TYPE=”ntfs” PARTUUID=”000dfe15-01″ Way at the end is the NTFS drive. Now create an /etc/fstab entry like this: UUID=4E65750852A3B04A /media/theexternal ntfs-3g Read more
Plex not seeing external flash drive (ext4 formatted) Because /media is owned by root, plex will have issues. Add the plex user to your group: sudo addgroup plex YOURGROUP Then, open the “disks” app in ubuntu, choose your flash drive, click on the gear icon, click on Edit Mount Options, Read more
PS3MediaServer on Ubuntu Plex is cool, but if your internet goes down, then your clients can’t always connect. So, back the the basics for me with ps3MediaServer as a backup: sudo apt-get install mencoder tsmuxer avisynth ffmpeg mplayer sudo apt-get install default-jre Download generic-linux-unix from: https://sourceforge.net/projects/ps3mediaserver/files/ Change PMS.sh and tsmuxer Read more
Get public IP and email it to yourself using Ubuntu 1.) Get your current public IP and write it to a file: dig +short myip.opendns.com @resolver1.opendns.com >> myip.txt (got this off the internet, thanks to the guy that posted this!) 2.) Read the file contents and email it: Basically, follow Read more
Some apache2 configs for owncloud OMS, the apache guys just can’t stick to a standard. But anyhow, here are some configs to do: Issue 1 (Where is my config.php) Most likely it is in /var/www/owncloud/config/config.php Issue 2 (when starting Apache) AH00558: apache2: Could not reliably determine the server’s fully qualified Read more
Schedule airodump via Cron to run every X minutes service cron status — check if it is running ps -ef |grep cron –another way to check if cron is running You can use the below to generate output files every XX minutes with a list of APs and stations nearby. Read more
Kali on Hyper V I recently had to get Kali up and running on Hyper V. Here are some tips and tricks: After installation, use these sources (they might change after some time so always check the Kali website for the latest): nano /etc/apt/sources.list (and add the below) deb http://http.kali.org/kali Read more
remote error: tls: bad record MAC I sometimes get this in docker or a VM. It is related to checksum offloading onto the NIC. Diable checksum offloading: sudo apt install ethtool sudo ethtool –offload eth0 rx off tx off