Launch a Counter Strike: Global Offensive (CS:GO) server on Ubuntu 18.04

[Rajakavitha1]

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Note that, in order to use RCON based on this guide, you'll need to add TCP rules to allow for it. Specifying a range like this should be satisfactory:

sudo iptables -I INPUT 5 -p tcp -m tcp --dport 26900:27030 -j ACCEPT