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firewall to an external server and have that server forward traffic to a CVS
(version control) server (which listens of port 2401) on the internet.
______________
| PC client |
| WinCVS/ |
| TortoiseCVS |
|______________|
|
|
__________________
|Corporate FireWall|
|__________________|
|s|
|s|
|h|
| |
|t|
|u|
|n|
|n|
|e|
|l|
_________________
|Employers_Server |
|_________________|
|
|
____________
|CVSNT_server|
|____________|
I establish an ssh session with Employer's Server using ssh and specify that
I want to forward requests on local port 2401 through the firewall (that has
traffic on port 2401 blocked) and onto CVSNT server's port 2401.
To do this I do (having downloaded a commandline ssh client):
ssh -L 2401:CVSNT server:2401 rajan at Employers_server
I leave this session alive and use my cvs client (WinCVS or TortoiseCVS,
which I have grown to like immensely over the last week) to connect. When
connecting over the internet (in the absense of a firewall), you have to
specify how to get to the cvs repository on the server. This is done through
a command line client by the command:
cvs -d :pserver:CVSNT_server:/absolute/path/to/repository login
where pserver is a protocol used for communication.
When using the ssh tunnel that command is modified thus:
cvs -d :pserver:localhost:/absolute/path/to/repository login
^^^^^^^^^
In a gui cvs client like WinCVS or TortoiseCVS, you just click through
whatever configuration dialogues are available to set the hostname and
change CVSNT_server to localhost and you are in business.
I did not have to set up CVSNT_server in any special way.
Rajan.
----Original Message Follows----
From: bo.berglund at telia.com (Bo Berglund)
Reply-To: bo.berglund at telia.com
To: cvsnt at cvsnt.org cvsnt downloads at march-hare.com @CVSNT on Twitter CVSNT on Facebook
Subject: Re: [Cvsnt] Setting up CVSNT for SSH access
Date: Fri, 31 May 2002 17:04:42 GMT
On Fri, 31 May 2002 14:53:10 +0000 (UTC), "Rajan Karunakaran"
<rkaran at hotmail.com> wrote:
>Does CVS use the same port for communication on the client and server?
>Meaning does the server send and receive through the same port and does
the
>client do the same as well? Or do they use two different ports for send
an=
>d
>receive?
>
>
Normally Sockets communication is done like this:
- The server listens on a specific port (2401)
- When a call is done the client requests a connection and the server
accepts this *on another* port
- Then the server continues listening on the 2401 port
This way clients do not block each other.
But the firewall must be able to handle the communication that is
caused by the initial call to 2401 on different ports.
/Bo
(Bo Berglund, developer in Sweden)
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