introduction Since my last endavour in low latency firewalling, a lot has happend in the linux networking world. New algorithms where developed that reduce manual configuration by a large factor. I use this setup at home to: keep gaming latency low keep voice call’s (teams, slack, discord, teamspeak) latency low even in the event that there is high upload (cloud sync, email with large attachment, video streaming, backup), response times for interactive traffic are low and usable.

it is possible to do a live packet capure on a remote linux machine and process it live in wireshark on a windows machine. you need to have wireshark and plink (comes with putty) installed. To get a remote packet capture from a linux computer to a windows machine running wireshark: plink user@host -batch -P 222 "sudo tshark -i eth1 -w - " | "c:\Program Files\Wireshark\Wireshark.exe" -k -i - plink: windows executable that create’s an ssh link user@host: ssh user and host -batch: no questions asked -P: used port sudo tshark -i eth1 -w - : with sudo execute tshark on the remote server, listening on interface eth0 and -w write the output to stdout pipe the output of the remote ssh command to wireshark -i -: use stdin as input for wireshark

my backup server is running btrfs (kernel wiki) with raid1 (mirror), but i’m running out of space and don’t want to upgrade. And raid1 isn’t even necessary, it is the backup after all. To free up some space, well half of it, i used this command: btrfs balance start -dconvert=single / you can live migrate between ‘profiles’, for example from ‘single’ (data is saved only once on the btrfs filesyste), to raid1

Searching the web I stumbled upon: cyberciti It motivated me too share my own bashrc, have fun with it. my bashrc

Hello interwebs, The past 2 days i’ve been playing with shorewall’s traffic shaping and reading the lartc. Long story short: succes! goal: game with a good ping (latency) for everybody on a lan party (~10 people) problem: when pepole are surfing, gaming becomes impossible due to hig ping bandwith we use a fon hotspot to use internet, wich has limited bandwith (~2,8Mbit if we’re lucky)