CentOS - Sep 2007 - Bypassing firewall alternatives

Hi

I am experiencing a problem of bypassing firewalls.
I know that "ssh -R" can forward ports from remote server to local
ports.
But it requires an account of the remote server, which seems to be a
security hole.
I am looking for other programs which can do so, any suggestions?

Thanks.
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Wei Yu wrote:
> I am experiencing a problem of bypassing firewalls.
> I know that "ssh -R" can forward ports from remote server to
local
> ports. But it requires an account of the remote server, which seems to 
> be a security hole.
> I am looking for other programs which can do so, any suggestions?

I don't know any way you could forward a port from a remote host to 
anywhere without authenticating on said remote host.    

I'm not quite sure why you consider the existance of an account to be a 
security hole ?  you could configure an account that won't allow an 
interactive login (shell set to /bin/false), and JUST do port 
forwarding, using -N on the ssh command.