How to Enable Outgoing Keyserver port with iptables firewall
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Keyserver is used for storing and distributing OpenGPG keys. The Ubuntu project also maintains its own keyserver ( http://keyserver.ubuntu.com ) for distributing public-key to users.
keyserver uses HKP Keyserver protocol which listens on port 11371
Here’s how to enable the keyserver port on iptables:
iptables -A OUTPUT -p tcp -d <key server ip> --dport 11371 -j ACCEPT
Tags: firewall, gnupg, gpg, iptables, keyserver, ubuntu
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