IT/Software/Server Config/UFW

This is the default firewall in Linux

Turn it on

sudo ufw enable

Check Status

sudo ufw status

Add a port

sudo ufw allow 22

Close a port

sudo ufw deny 22

We normally open

http 80 https 443 ssh 22

nfs 111(tcp/udp) 2049

cups 631, 53, 5353, 6566

nomachine 4000

Additionaly if you are mounting nfs shares in fstab you may end up needing more ports.

rund this command and see what ports it uses. Then open those.

sudo mount -a -v

We ended up opening 41238 and 53847 just for nfs

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