Is it possible to open dyndns port at iptables?

windstory · 01-23-2011, 08:22 PM

Is it possible to open dyndns port at iptables?

I have a remote server which is cenots 5.5 x86 and uses iptable rules.
And my local pc is windows 7 x64 and have a dyndns address as mypc.dyndns.org.

I want to connect local pc with mypc.dyndns.org to remote server with iptable rules as follows.

Quote:

# Xmanager
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 6000:6010 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 6000:6010 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 7100 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 7100 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 177 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 177 -s mypc.dyndns.org -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -s mypc.dyndns.org -j ACCEPT

But I could not connect remote server.

Please let me know how to make this iptables to connect bwtween local pc and remote server with iptables and dyndns.

Andy Alt · 01-24-2011, 03:26 AM

To report your IP to dyndns, you don't need to do anything with iptables, just

The dyndns update client software, just needs outgoing access, so no firewall configuration should be necessary.

You would, however, have to set up port forwarding from your router, and depending on your LAN setup, need to set up port forwarding rules with iptables in order to allow access to services running on your computer, such as 80 for http, 21 for ftp, 22 for ssh...

http://www.dyndns.com/support/kb/dyndns.html

Quote:

2. Configure port forwarding and firewalls

Now that your service is installed and running, the next step is to configure your network to allow remote access. To do this, you will need to configure your router's port forwarding settings. Please visit PortForward.com for a list of guides by router and service. (For reference, any service you can access with a web browser uses HTTP on TCP port 80). You will also need to allow this port in your firewall software, such as Windows Firewall or Norton Internet Security.

As for configuring iptables itself:
http://www.linuxquestions.org/questi...server-857876/

http://www.linuxquestions.org/questi...tables-858061/

windstory · 01-25-2011, 03:00 AM

Andy Alkaline/ Thanks for kind reply.

I'll study, and hope this will solve my problem.