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trimstray / iptables-essentials

Iptables Essentials: Common Firewall Rules and Commands.
MIT License
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Doesn't seems right #8

Closed Cvar1984 closed 1 year ago

Cvar1984 commented 1 year ago

It said allow incoming but the rules allow both INPUT and OUTPUT connection, is it necessary to open both chain?

rautamiekka commented 1 year ago

The machine must be able to talk back to the other when related to an already ESTABLISHED connection. I once tried without, can't remember what, probly SSH, and the receiver didn't reply.