Before you say It's duplicate... read! I wanted to use iptables to allow only 1 IP, but there were some issues with "state" whatever it means, and persistence of iptables.

Many people advised UFW, but I want zombie box, applied

sudo ufw default deny incoming

sudo ufw default deny outgoing

ping works, DNS works, how can I burn all using UFW but keep applications responsive based on "state" "lo" https://unix.stackexchange.com/a/11870/194331

"For example, not allowing -i lo and -o lo will certainly cause problems for certain applications"

I don't need DNS and PING and anything, I put domain name into hosts file and I want to allow 100% only 1 IP over 443 port, no extras. Possible with UFW?

UPDATE I found this very helpful, it explains what "lo" means https://www.digitalocean.com/community/tutorials/how-to-set-up-a-basic-iptables-firewall-on-centos-6

I seems like I'm going towards iptables, but if someone is UFW master, please answer.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.