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Full Discussion: SSH Tunneling
Top Forums UNIX for Advanced & Expert Users SSH Tunneling Post 302108589 by silvaman on Tuesday 27th of February 2007 02:45:38 PM
Old 02-27-2007
SSH Tunneling
Hi all

question -

there are 2 servers A + B. server A is connected to the internet and running a squid proxy server - server B is behind a firewall. I can ssh from A to B but not from B to A. I need internet access on B to update some files. I thought I could use some sort of ssh tunnel to achieve this.

I was thought a remote port forward from A to B. I configured this ( from server A do 'ssh -R 1234:squidproxy_ipaddress:3128 user@server_B) and got a http 403 error when doing the update on B and pointing at localport 1234 which , i thought, indicated a permissions issue on the squid proxy no problem to sort out - except i dont have permissions to do it Smilie - the sysadmin can sort it out though

however

The sysadmin says it wont work I should be doing a local port forward on A - i configured this (ssh -L:localhost:3128 user@serverB) and got a 'connection refused error' when doing the update from server B

its not resolved yet as sysadmins unavailable but out of curiosity who is right here - these tunnels can get a bit confusing! - thoughts appreciated as always
 

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LEARN ABOUT DEBIAN

squid3_radius_auth

squid_radius_auth(8)					      System Manager's Manual					      squid_radius_auth(8)

NAME

       squid_radius_auth - Squid RADIUS authentication helper

SYNOPSIS

       squid_radius_auth -f configfile
       squid_radius_auth -h "server" [-p port] [-i identifier] -w secret

DESCRIPTION

       This helper allows Squid to connect to a RADIUS server to validate the user name and password of Basic HTTP authentication.

       -f configfile
	      Specifies the path to a configuration file. See the CONFIGURATION section for details.

       -h server
	      Alternative method of specifying the server to connect to

       -p port
	      Specify  another	server	port where the RADIUS server listens for requests if different from the default RADIUS port.  Normally not
	      specified.

       -i identifier
	      Unique identifier identifying this Squid proxy to the RADIUS server.  If not specified the IP address is used  as  to  identify  the
	      proxy.

       -w secret
	      Alternative method of specifying the shared secret. Using the configuration file is generally more secure and recommended.

       -t timeout
	      RADIUS request timeout. Default 10 seconds.

CONFIGURATION

       The configuration specifies how the helper connects to RADIUS.  The file contains a list of directives (one per line). Lines beginning with
       a # is ignored.

       server radiusserver
	      specifies the name or address of the RADIUS server to connect to.

       secret somesecretstring
	      specifies the shared RADIUS secret.

       identifier nameofserver
	      specifies what the proxy should identify itsels as to the RADIUS server.	This directive is optional.

       port portnumber
	      Specifies the port number or service name where the helper should connect.

AUTHOR

       This manual page was written by Henrik Nordstrom <hno@squid-cache.org>

       squid_radius_auth is written by Marc van Selm <selm@cistron.nl> with contributions from Henrik  Nordstrom  <hno@squid-cache.org>  and  many
       others

QUESTIONS

       Any  questions on usage can be sent to Squid Users <squid-users@squid-cache.org>, or to your favorite RADIUS list/friend if the question is
       more related to RADIUS than Squid.

REPORTING BUGS

       Report bugs or bug-fixes to Squid Bugs <squid-bugs@squid-cache.org> or ideas for new improvements  to  Squid  Developers  <squid-dev@squid-
       cache.org>

SEE ALSO

       RFC2058 - Remote Authentication Dial In User Service (RADIUS)

Squid RADIUS Auth						   7 August 2004					      squid_radius_auth(8)
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