est

4 years ago · 1746484530
parent c95e5aa43d
commit 1746484530
1 changed files with 2 additions and 0 deletions
--- a/usa.yimian.xyz/iptables.sh
+++ b/usa.yimian.xyz/iptables.sh
@ -18,6 +18,8 @@ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
 # dns
 iptables -A INPUT -p tcp --sport 53 -j ACCEPT
 iptables -A INPUT -p udp --sport 53 -j ACCEPT
+# for established service
+iptables -A INPUT -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT
 # icmp ping
 iptables -A INPUT -p icmp -j ACCEPT
 # dns lookup