Difference between revisions of "Iptables"
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↑ https://serverfault.com/a/608976
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* <code>sudo iptables -L</code> | * <code>sudo iptables -L</code> | ||
* <code>iptables-save</code> and <code>iptables-restore</code> | * <code>iptables-save</code> and <code>iptables-restore</code> | ||
| + | |||
| + | |||
| + | == Examples == | ||
| + | [[KVM]] [[VNC]] remote viewer | ||
| + | [[iptables]] -t nat -A PREROUTING -i eno1 -p tcp --dport 5900 -j DNAT --to 127.0.0.1:5900 | ||
| + | sysctl -w net.ipv4.ip_forward=1 | ||
| + | sysctl -p /etc/sysctl.conf | ||
== Activities == | == Activities == | ||
Revision as of 10:59, 26 January 2020
iptables command line utility allows to modify Linux kernel firewall rules.
Contents
Basic commands
sudo iptables -Liptables-saveandiptables-restore
Examples
KVM VNC remote viewer iptables -t nat -A PREROUTING -i eno1 -p tcp --dport 5900 -j DNAT --to 127.0.0.1:5900 sysctl -w net.ipv4.ip_forward=1 sysctl -p /etc/sysctl.conf
Activities
- Read iptables Ubuntu howto: https://help.ubuntu.com/community/IptablesHowTo
- Read archlinux documentation: https://wiki.archlinux.org/index.php/iptables
- Read Stackoverflow iptables questions: https://stackoverflow.com/questions/tagged/iptables?tab=Votes
- Review your current iptables configuration
See also
iptablesufwfirewalldnftablesfirewall-cmdipfw (FreeBSD)PF (OpenBSD), netsh advfirewallnftablesfirewall-cmd- Palo Alto firewalls: PAN-OS
- Port knocking,
fail2ban[1]fwknop, DenyHosts
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