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Network Security Secure-Shell
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RE: Binding ssh to a loopback address

Subject: RE: Binding ssh to a loopback address
Date: Mon, 9 May 2005 17:09:13 +0100
I have the following as web proxy server lives somewhere deep in the network
totally blocked from use by normal access,
I have found that if you put the -N option and -f it allows the startup of
the box to call the forward.( without it you get some odd results)

/etc/rc3.d/S99zforward
su - <ID> -c "ssh  -f -N -L8080:<PUBLIC>:8080 localhost -g -l <ID>"

replace <ID> with a none root localuser.
replace <PUBLIC> with the IP you wish to forward to.

-L listen-port:host:port   Forward local port to remote address
-l user     Log in using this user name.
-f fork into background after authentication.
-N Do not execute a shell or command
-g globally advertize the port ( required for other machines)

good luck and dont do the forward as root unless you have to.

-----Original Message-----
From: Logu [mailto:logsnaath@gmail.com]
Sent: 07 May 2005 05:19
To: secureshell@securityfocus.com
Cc: CP Lim
Subject: Re: Binding ssh to a loopback address




I was trying to forward a remote port to one at local (but not 127.0.0.1) 
by doing :

ssh -b 127.0.0.2 -L80:localhost:80 remotehost

but got :

ssh: connect to host d2 port 80: No route to host


I think you  should have an interface with IP 127.0.0.2 up before doing the 
port forwarding.



-- 
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.4 - Release Date: 27/03/2005
 

-- 
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.4 - Release Date: 27/03/2005
 

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