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Newbie Joined: 17 Sep 2003 Posts: 9

My job recently closed off port 23. Are there any options for me out there so that i can still use zmud?

GURU Joined: 10 Oct 2000 Posts: 873 Location: USA

quote:
Originally posted by dynamodon

My job recently closed off port 23. Are there any options for me out there so that i can still use zmud?

If you mean that your work network doesn't allow outbound connections to port 23, then you have a few options:
1) talk to the admin about making an exception for you to particular servers
2) talk to the mud about opening another port
3) using a proxy (perhaps run from your home machine if you've got broadband, or an open/paid for socks proxy, or someone like httptunnel)
4) using a mud that uses ports other than 23

The more information about your situation you can supply, the more help we can be. (work setup, other resources you have like always-on home machines, etc.)

-Tarn

Newbie Joined: 17 Sep 2003 Posts: 9

im not actually doing this for my self so ill try to relate as best i can.

work has closed port 23. right now he is using putty to access ssh account through port 22 and connecting to the mud from telnet like that. Can zmud work off port 22?

GURU Joined: 10 Oct 2000 Posts: 873 Location: USA

quote:
Originally posted by dynamodon

im not actually doing this for my self so ill try to relate as best i can.

work has closed port 23. right now he is using putty to access ssh account through port 22 and connecting to the mud from telnet like that. Can zmud work off port 22?

A simplified view of how connection-oriented network communications work:
A server application listens on a port. A client (like zMud) connects to that port, and uses an arbitrary port (chosen by the operating system) on the machine the client is running on. Thus asking whether zMud can work FROM port 22 doesn't make much sense. zMud can connect TO any port number if the server and intervening network are willing.

To address your friend's problem: Yes, zMud can connect to ports other than 23. I believe that putty may be able to act as a proxy for him. In that case, he would connect zMud to to the proxy, and then the proxy would tunnel him to his shell, from whence he could telnet to the mud.

google up "putty port forward" for some texts on setting putty up to do this- I'm not a user right now.

zMud->putty on local machine->SSL account on outside server->MUD server

He will probably run putty on his local machine and then ask zMud to connect to 127.0.0.1 [whichever port he set Putty up to listen on]

Edit: a likely looking link: http://www.cs.uu.nl/technical/services/ssh/putty/puttyfw.html

-Tarn

Newbie Joined: 17 Sep 2003 Posts: 9

ive been reading the website files, i think this relates to our situation the best

Things you won't see in 2002:

zTelnet:
Work on this has essentially been stopped. The idea of adding SSH to zMUD was fine, until I learned about all of the license and export restrictions associated with the SSH protocol. Instead of creating a separate Telnet product, I'll just be fixing the existing VT100 bugs in zMUD instead.

We've been trying to figure out how to use zmud to work like this seperate program putty that access its ssh account through port 22 instead of port 23 which is blocked. if anyone else has any other idea besides home proxy, those are welcomed :)

GURU Joined: 10 Oct 2000 Posts: 873 Location: USA

quote:
Originally posted by dynamodon
We've been trying to figure out how to use zmud to work like this seperate program putty that access its ssh account through port 22 instead of port 23 which is blocked. if anyone else has any other idea besides home proxy, those are welcomed :)

Correct, zMud does not do SSL. If you want to use zMud as your client, and you want to connect to a server that can only accept SSL connections, you need to use a proxy. It doesn't necessarily need to be run from home or a remote location; it can run on the same machine as zMud if it is able to connect to the remote server from there.

Since your friend is apparently already using putty successfully from this computer, that's a logical choice to use as the proxy.

zMud <-> putty <-> remote machine

I've not used putty as an SSL proxy myself, but its reputation is good and I expect that the instructions I linked to will work. There are other proxies out there if you prefer.

-Tarn

Beginner Joined: 28 Oct 2005 Posts: 11

There is no easy solution.
In my case, the only access I had at work was to ports 80, 443 and 21 (passive) for connections to the internet.
I had setup my own mud server at home on port 80. From work I wanted to telnet home 80, although the firewall allowed port 80 for internet traffic, the firewall detected the telnet packets and blocked them.
So, I setup my mud server on port 443, went to work and telnet home 443, it was still blocked.
So, onto preventing the firewall from detecting the telnet traffic.

This is where the easy dissolves, I used a product called htthost / httport (htthost.com) SDK/source available.
If you manage to setup the htthost AND your able to install the httport client on your work computer, you can telnet localhost 4000 which will be listened to by httport, encrypted, a link established to 'home 443' where htthost decrypts and forwarded onto localhost 4000.

This advice applies to a windows client and windows server config.

Unless the mud you are connecting to is running ssh AND its listening on port 443, you wont get through a secure network.
There are some instances where you can utilize your network where a socks server is available, but I'm not familular with configuring systems for socks.

Newbie Joined: 21 Feb 2012 Posts: 1

I got other problem, port 23 is open from work but my mud, what i would like to play runs on port 6789 and thats locked. Is there proxy servers out there witch runs on port 23? cant find any. How can i use my zmud to play mud on 6789 if 22 and 23 are open? Dont like to make proxy 23 server from my homepc