Hi itskaefer,
The webmin tool may hide some info, please try the following script on your Linux:
Save it to a file setup_firewall.sh, chown 755 setup_firewall.sh, then run it as root.
Code:
#!/bin/bash
#
# iptables example configuration script
#
# Flush all current rules from iptables
#
iptables -F
#
# Allow SSH connections on tcp port 22
# This is essential when working on remote servers via SSH to prevent locking yourself
out of the system
#
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -p tcp --dport 3306 -j ACCEPT
# add other ports you need
# iptables -A INPUT -p tcp --dport 10000 -j ACCEPT
# iptables -A INPUT -p tcp --dport 10000 -j ACCEPT
#
# Set default policies for INPUT, FORWARD and OUTPUT chains
#
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT ACCEPT
#
# Set access for localhost
#
iptables -A INPUT -i lo -j ACCEPT
#
# Accept packets belonging to established and related connections
#
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
#
# Save settings
#
/sbin/service iptables save
#
# List rules
#
iptables -L -v
So you can see there is no need to do anything special to NR client. Please read it and let me know if you still ahve problem.
Thanks,
KevinZ - NeoRouter team