diff --git a/iptables/rules6.conf b/iptables/rules6.conf
index 12fa596..a5a8eec 100644
--- a/iptables/rules6.conf
+++ b/iptables/rules6.conf
@@ -18,6 +18,7 @@
 -A OUTPUT -o ens3 -j ACCEPT
 -A DOCKER-USER -i ens3 -j FILTERS
 -A FILTERS -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A FILTERS -m conntrack --ctstate INVALID -j DROP
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 25 -j ACCEPT
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 80 -j ACCEPT
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 110 -j ACCEPT
@@ -28,6 +29,5 @@
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 993 -j ACCEPT
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 995 -j ACCEPT
 -A FILTERS -m conntrack --ctstate NEW -p tcp --syn --dport 4190 -j ACCEPT
--A FILTERS -m conntrack --ctstate INVALID -j DROP
 -A FILTERS -j REJECT
 COMMIT