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Firewall randomly blocking custom defined ports

Wizzie

Wizzie

New Pleskian
Hello there,

I have the web pro edition panel 12 on centos 6.5 64bit, and i have made some custom firewall rules in order to be able to run a teamspeak server.
The problem is that the firewall randomly blocks the teamspeak port and keeps it blocked unless i restart the firewall.

Any suggestions?
 
to be more specific, this is my iptables file:

#!/bin/sh
#ATTENTION!
#
#DO NOT MODIFY THIS FILE BECAUSE IT WAS GENERATED AUTOMATICALLY,
#SO ALL YOUR CHANGES WILL BE LOST THE NEXT TIME THE FILE IS GENERATED.

set -e

echo 0 > /proc/sys/net/ipv4/ip_forward
([ -f /var/lock/subsys/ipchains ] && /etc/init.d/ipchains stop) >/dev/null 2>&1 || true
(rmmod ipchains) >/dev/null 2>&1 || true
/sbin/iptables-save -t filter | grep -- "-A INPUT" | grep -v fail2ban | sed -e "s#^-A#/sbin/iptables -D#g" | sh
/sbin/iptables -F FORWARD
/sbin/iptables -F OUTPUT
/sbin/iptables -Z FORWARD
/sbin/iptables -Z OUTPUT
/sbin/iptables -P INPUT DROP
/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A INPUT -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/iptables -A INPUT -m state --state INVALID -j DROP
/sbin/iptables -P OUTPUT DROP
/sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A OUTPUT -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/iptables -A OUTPUT -m state --state INVALID -j DROP
/sbin/iptables -P FORWARD DROP
/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A FORWARD -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/iptables -A FORWARD -m state --state INVALID -j DROP
/sbin/iptables -A INPUT -i lo -j ACCEPT
/sbin/iptables -A OUTPUT -o lo -j ACCEPT
/sbin/iptables -A FORWARD -i lo -o lo -j ACCEPT
/sbin/iptables -t mangle -F
/sbin/iptables -t mangle -Z
/sbin/iptables -t mangle -P PREROUTING ACCEPT
/sbin/iptables -t mangle -P OUTPUT ACCEPT
/sbin/iptables -t mangle -P INPUT ACCEPT
/sbin/iptables -t mangle -P FORWARD ACCEPT
/sbin/iptables -t mangle -P POSTROUTING ACCEPT
/sbin/ip6tables-save -t filter | grep -- "-A INPUT" | grep -v fail2ban | sed -e "s#^-A#/sbin/ip6tables -D#g" | sh
/sbin/ip6tables -F FORWARD
/sbin/ip6tables -F OUTPUT
/sbin/ip6tables -Z FORWARD
/sbin/ip6tables -Z OUTPUT
/sbin/ip6tables -P INPUT DROP
/sbin/ip6tables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/ip6tables -A INPUT -m state --state INVALID -j DROP
/sbin/ip6tables -P OUTPUT DROP
/sbin/ip6tables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/ip6tables -A OUTPUT -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/ip6tables -A OUTPUT -m state --state INVALID -j DROP
/sbin/ip6tables -P FORWARD DROP
/sbin/ip6tables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/ip6tables -A FORWARD -p tcp ! --syn -m state --state NEW -j REJECT --reject-with tcp-reset
/sbin/ip6tables -A FORWARD -m state --state INVALID -j DROP
/sbin/ip6tables -A INPUT -i lo -j ACCEPT
/sbin/ip6tables -A OUTPUT -o lo -j ACCEPT
/sbin/ip6tables -A FORWARD -i lo -o lo -j ACCEPT
/sbin/ip6tables -t mangle -F
/sbin/ip6tables -t mangle -Z
/sbin/ip6tables -t mangle -P PREROUTING ACCEPT
/sbin/ip6tables -t mangle -P OUTPUT ACCEPT
/sbin/ip6tables -t mangle -P INPUT ACCEPT
/sbin/ip6tables -t mangle -P FORWARD ACCEPT
/sbin/ip6tables -t mangle -P POSTROUTING ACCEPT
/sbin/iptables -t nat -F
/sbin/iptables -t nat -Z
/sbin/iptables -t nat -P PREROUTING ACCEPT
/sbin/iptables -t nat -P OUTPUT ACCEPT
/sbin/iptables -t nat -P POSTROUTING ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 50002 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 50002 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 24477 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 24477 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 50000 -j ACCEPT
/sbin/iptables -A INPUT -p udp --dport 50000 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 50000 -j ACCEPT
/sbin/ip6tables -A INPUT -p udp --dport 50000 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 50001 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 50001 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 12443 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 12443 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 11443 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 11444 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 11443 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 11444 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 8447 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 8447 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 8443 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 8880 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 8443 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 8880 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 80 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 443 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 80 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 443 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 21 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 21 -j DROP

/sbin/iptables -A INPUT -p tcp --dport 22 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 22 -j DROP

/sbin/iptables -A INPUT -p tcp --dport 587 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 587 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 25 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 465 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 25 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 465 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 110 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 995 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 110 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 995 -j DROP

/sbin/iptables -A INPUT -p tcp --dport 143 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 993 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 143 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 993 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 106 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 106 -j ACCEPT

/sbin/iptables -A INPUT -p tcp --dport 3306 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 3306 -j DROP

/sbin/iptables -A INPUT -p tcp --dport 5432 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 5432 -j DROP

/sbin/iptables -A INPUT -p tcp --dport 9008 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 9080 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 9008 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 9080 -j DROP

/sbin/iptables -A INPUT -p udp --dport 137 -j DROP
/sbin/iptables -A INPUT -p udp --dport 138 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 139 -j DROP
/sbin/iptables -A INPUT -p tcp --dport 445 -j DROP
/sbin/ip6tables -A INPUT -p udp --dport 137 -j DROP
/sbin/ip6tables -A INPUT -p udp --dport 138 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 139 -j DROP
/sbin/ip6tables -A INPUT -p tcp --dport 445 -j DROP

/sbin/iptables -A INPUT -p udp --dport 1194 -j ACCEPT
/sbin/ip6tables -A INPUT -p udp --dport 1194 -j ACCEPT

/sbin/iptables -A INPUT -p udp --dport 53 -j ACCEPT
/sbin/iptables -A INPUT -p tcp --dport 53 -j ACCEPT
/sbin/ip6tables -A INPUT -p udp --dport 53 -j ACCEPT
/sbin/ip6tables -A INPUT -p tcp --dport 53 -j ACCEPT

/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 134/0 -j ACCEPT
/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 135/0 -j ACCEPT
/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 136/0 -j ACCEPT
/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 137/0 -j ACCEPT

/sbin/iptables -A INPUT -p icmp --icmp-type 8/0 -j ACCEPT
/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 128/0 -j ACCEPT
/sbin/ip6tables -A INPUT -p icmpv6 --icmpv6-type 129/0 -j ACCEPT

/sbin/iptables -A INPUT -j DROP
/sbin/ip6tables -A INPUT -j DROP

/sbin/iptables -A OUTPUT -j ACCEPT
/sbin/ip6tables -A OUTPUT -j ACCEPT

/sbin/iptables -A FORWARD -j DROP
/sbin/ip6tables -A FORWARD -j DROP

echo 1 > /proc/sys/net/ipv4/ip_forward
#
# End of script
#


It is randomly blocking ports and i do not know why! Any suggestions?
 
Hello there IgorG,

I've talked to the teamspeak support team and they told me that the settings are ok (yes i know that i have changed the default ports to avoid scanners and further arising problems).
Now i've turned back to you to ask about this issue.
 
You must log in or register to reply here.

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