Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

WebVPN port forward on 127.0.0.2

I have a software that can not connect to 127.0.0.1. I have read a few posts that say you can redirect ports using 127.0.0.2. I have tried that IP and it was not mapped. I have also looked to see if I can tell the redirect to be on 127.0.0.2, but can't find a way to set local IP.

What simple step am I missing?

Thank You

5 REPLIES

Re: WebVPN port forward on 127.0.0.2

Jeff,

127.0.0.1 is only used on your local machine. This is usually used when your running a server and client that connects to itself.

If I'm off base here please post more about what your trying to do.

Patrick

New Member

Re: WebVPN port forward on 127.0.0.2

The software client is designed to not allow a connection to 127.0.0.1. It will allow a connection to 127.0.0.2 however. So I need to map port 9600 on 127.0.0.2 to appserver1 port number 9600.

Re: WebVPN port forward on 127.0.0.2

I think you would have a better chance of mapping the ports to an actual routable ip.

Patrick

New Member

Re: WebVPN port forward on 127.0.0.2

I understand the issue here, Microsoft TSAC (Terminal Server ActiveX Client or TSWeb) has the same problem, it doensn't allow you to connect to 127.0.0.1:1389 whereas the normal RDP-client does.

Though it's not very practical just now I added a MS Loopback interface to my PC. (Add hardware, network adapter). You can't assign a 127.0.0.x address because the 127-range is already reserved for the default loopback interface.

It would be great if you could tell the port-forwarding just to listen on a normally used active interface, such as the Cisco SSL VPN Adapter itself.

New Member

Re: WebVPN port forward on 127.0.0.2

Hi Jeff,

This is the command to achieve what you want on an IOS device:

local-port 9600 remote-server "appserver1" remote-port 9600 description "appserver1"

The condition is that the host name "appserver1" must be resoved by DNS by the device on which WebVPN is configured (ip domain-lookup and ip name-server n.n.n.n). Or use ip host appserver1 n.n.n.n.

And if local-port and remote-port are the same (e.g. 9600), it will redirect to the next available 127.0.0.x loopback address.

Hope it helps.

345
Views
11
Helpful
5
Replies