error connection

Hello,

my friend has a problem connecting to my server Teamspeak 3. He tried to phone through the same internet but the same error. Ban on the server does not have.

Could this be caused by my server firewall?

Zitat

#!/bin/bash
# About: Firewall Regeln fuer iptables
iptables -F
iptables -X
iptables -N DENY
iptables -A DENY -p tcp -m tcp -m limit --limit 30/sec --limit-burst 100 -m comment --comment "Anti-DoS" -j REJECT --reject-with tcp-reset
iptables -A DENY -m limit --limit 30/sec --limit-burst 100 -m comment --comment "Anti-DoS" -j REJECT --reject-with icmp-proto-unreachable
iptables -A DENY -m comment --comment "Alles andere ignorieren" -j DROP
iptables -N SERVICES
iptables -A SERVICES -p tcp -m tcp --dport 53 -m comment --comment "Erlaube: DNS" -j ACCEPT
iptables -A SERVICES -p udp -m udp --dport 53 -m comment --comment "Erlaube: DNS" -j ACCEPT
iptables -A SERVICES -p tcp -m tcp --dport 22 -m comment --comment "Erlaube: SSH-Zugriff" -j ACCEPT
iptables -A SERVICES -j RETURN
iptables -N TEAMSPEAK
iptables -A TEAMSPEAK -p tcp -m tcp --dport 2008 -m comment --comment "Erlaube: TeamSpeak Accounting" -j ACCEPT
iptables -A TEAMSPEAK -p udp -m udp --dport 9987 -m comment --comment "Erlaube: TeamSpeak Voiceport" -j ACCEPT
iptables -A TEAMSPEAK -p udp -m udp --dport 9988 -m comment --comment "Erlaube: TeamSpeak Voiceport" -j ACCEPT
iptables -A TEAMSPEAK -p tcp -m tcp --dport 10011 -m comment --comment "Erlaube: TeamSpeak ServerQuery" -j ACCEPT
iptables -A TEAMSPEAK -p tcp -m tcp --dport 30033 -m comment --comment "Erlaube: TeamSpeak Avatar" -j ACCEPT
iptables -A TEAMSPEAK -p tcp -m tcp --dport 41144 -m comment --comment "Erlaube: TeamSpeak TSDNS" -j ACCEPT
iptables -A TEAMSPEAK -j RETURN
iptables -A INPUT -i lo -m comment --comment "Erlaube: Loopback" -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -m comment --comment "Erlaube: Related und Established Verbindungen" -j ACCEPT
iptables -A INPUT -m comment --comment "Erlaube Standard Dienste" -j SERVICES
iptables -A INPUT -m comment --comment "Erlaube TeamSpeak Dienste" -j TEAMSPEAK
iptables -A INPUT -p icmp -m comment --comment "Erlaube: ICMP" -j ACCEPT
iptables -A INPUT -m comment --comment "Ignoriere alles andere" -j DENY
iptables -P INPUT DROP

Alles anzeigen

failed to connect to server

to send the ping can normally

the problem lies with the router. how to disconnect the router and the modem connects to it all works normally.{Only then lost packets on the modem} You know how to solve the problem with the router?