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linux [2026/04/26 13:33] – ninelinux [2026/04/26 13:41] (current) – [iptables/netfilter] nine
Line 8: Line 8:
  
 ===== iptables/netfilter ===== ===== iptables/netfilter =====
 +
  
 Restrict to single host, e.g. for prometheus node exporter Restrict to single host, e.g. for prometheus node exporter
 +  # required for persisting rules
 +  apt-get install iptables-persistent
 +  
 +  # set rules
   iptables -N prometheus     iptables -N prometheus  
   iptables -A prometheus --src <server-ip> -j ACCEPT   iptables -A prometheus --src <server-ip> -j ACCEPT
Line 15: Line 20:
   iptables -I INPUT -m tcp -p tcp --dport 9100 -j prometheus   iptables -I INPUT -m tcp -p tcp --dport 9100 -j prometheus
      
 +  # save persistent
 +  iptables-save | tee /etc/iptables/rules.v4
 +
 ===== docker ===== ===== docker =====
  
linux.txt · Last modified: 2026/04/26 13:41 by nine