I have a server, onto which I want to use Python, that is behind a company firewall. I do not want to mess with it and the only thing I can do is to make a firewall exception for specific URL/domains.
I know linux has 3 built-in tables and each of them has its own chains as follow:
How do we allow certain set of Private IPs to enter through SSH login(RSA key pair) into Linux Server?
There’s an example of iptables rules on archlinux wiki:
I am confused what’s the actual difference between SNAT and Masquerade?
SITUATION:
I think there is no iptables/pf solution to only allow an XY application on e.g.: outbound tcp port 80, eth0. So if I have a userid: “500” then how could I block any other communications then the mentioned on port 80/outbound/tcp/eth0? (e.g.: just privoxy is using port 80 on eth0)
How do I set up the firewall on a system in a LAN so that some ports are only open to connections from the local area network, and not from the outside world?
I have docker installed on CentOS 7 and I am running firewallD.