Thanks for your response.
yes, I do have to enter the proxy hostname and port in my browser.
As i indicated earlier, no traffic is allowed except traffic go thru
the proxy (after filtering and inspect I guess)

Thanks

Chuck wrote:
> Doug wrote:
> > Hi,
> > My company doesn't allow any kind of connection to outside. The only
> > way you can have access to the internet is thru the company's HTTP
> > proxy. Other traffic (DNS included) is prohibited.
> > I have learned that you can access ssh server via http proxy. But when
> > I set it up in PUTTY (under Connection -> Proxy tab) looks like the
> > HTTP proxy detects I am trying to connect to SSH server. Thus it throws
> > service not allowed exception (error 403).
> > But if I try to change the port # of ssh server setting for PUTTY from
> > 22 to 80 it throws this exception:
> > 503: service unavailable.
> >
> > So I wonder if I change my SSH server port to 8080 for example, will it
> > work for me?
> >
> > Thanks guys
> >
>
> In order to access the web from work, do you have to enter the proxy
> server's info into your browser's configuration? If not you may be
> hitting a firewall restriction and not a proxy server issue at all. If
> this is the case you just need to run your ssh server on a port that is
> not blocked by the firewall and configure putty to connect to it
> directly on that non-standard port. A few that would likely work are 80
> (http), 443 (https), 8080-8089 (typical proxy server port #'s).