Solved

Changing SSH port

Posted on 2000-03-06
4
268 Views
Last Modified: 2013-12-16
Hello,

Can anyone tell me how to change my SSH configuration to listen on another port (preferably 23)?

I want to connect to my home box from work via SSH, but my company's proxy blocks 22.  Telnet (23), web (80) and maybe some others I do not know about are allowed.

I want to use RSA authentication.  If I understand the SSH manpage, I need to keep the port number low.

I tried modifying 'sshd_config' and 'ssh_config' to no avail.

Any ideas?

Thanks in advance,
CubeDweller
0
Comment
Question by:cubedweller
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 

Expert Comment

by:karwoski
ID: 2590061
If you're using SSH2 you can change the port number in the /etc/ssh2/ssh2_config file.  In that file there's a line:

Port      22

and you can change that to whatever you want. If you have SSH1 and you don't have a SSH subdir in /etc just poke around in /etc for a file name with something to the effect of sshconfig.
0
 
LVL 40

Accepted Solution

by:
jlevie earned 50 total points
ID: 2590071
You can't do it by just changing SSH. Port 23 is already owned by telnet and ssh won't be able to listen on that port as long as inetd thinks it belongs to telnet. If you change inetd so that ssh will use 23 you'll prevent telnet from working on that system.

Why don't you try talking to the network administrators about enabling port 22 for ssh? They may have the others disabled for security reasons, but may not view ssh as being a significant risk.
0
 

Author Comment

by:cubedweller
ID: 2592588
Karwoski, thank you for your answer.

Jlevie is more correct though, since I had to disable telnet first to free up port 23.
0
 

Author Comment

by:cubedweller
ID: 2592619
Thank you again, jlevie.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Little introduction about CP: CP is a command on linux that use to copy files and folder from one location to another location. Example usage of CP as follow: cp /myfoder /pathto/destination/folder/ cp abc.tar.gz /pathto/destination/folder/ab…
Setting up Secure Ubuntu server on VMware 1.      Insert the Ubuntu Server distribution CD or attach the ISO of the CD which is in the “Datastore”. Note that it is important to install the x64 edition on servers, not the X86 editions. 2.      Power on th…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Suggested Courses

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question