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Default iptables configuration.
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| #!/bin/bash | |
| iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT | |
| iptables -A INPUT -i lo -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT | |
| iptables -P INPUT DROP | |
| iptables -P FORWARD DROP | |
| iptables -P OUTPUT ACCEPT |
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Apply configuration
$ sudo source iptables.confPersistent
Install iptables-persistent:
$ sudo apt install iptables-persistentSave rules:
$ sudo iptables-save > /etc/iptables/rules.v4Show log real-time
tail -f /var/log/messages | grep -F "FW:"