[JDEV] Help on Firewall

[Dave]

BTW - There's also another interesting solution, if your firewall's
blocked outgoing connections to port 5222 - convince the firewall admin
of your favorite Jabber server to redirect some other port (such as 80,
if web service isn't being needed - since blocking outgoing access to that
port selectively isn't too easy for a firewall admin if his users are
smart) to 5222, so when you connect to your.favorite.jabber.server:80,
you're actually connecting to the daemon on port 5222, the normal
Jabber server.  Sure, you can use HTTP polling if you prefer, but if
you don't need to, you'll appreciate all the advantages of a standard
TCP connection.  (This assumes that your firewall doesn't block all
outgoing TCP connections, of course.)

 - Dave


Matthias Wimmer wrote:
> 
> Hi Vincent!
> 
> Vincent Ong wrote:
> 
> >
> > I am trying to write a Jabber client. However, my company's firewall has
> >
> >
> > blocked off port 5222 and 5269. I would like to enable my Jabber client to
> > communicate with ICQ, MSN and Yahoo clients. Therefore I would need port
> > 4000, 1863 and 5050 as well. How can I bypass this? Is there a way I can
> > have a workaround like what ICQ provide? For example, using HTTPs? I need
> > help urgently.
> >
> You neighter need access to port 5269 nor to 4000, 1863 or 5050.
> 
> Port 5269 is only used between Jabber servers, the other ports are not 
> required because you just have to use the Jabber transports that 
> communicate with the other IM networks with you.
> 
> For a Jabber client it's only necessary to open a connection to port 
> 5222 (or 5223 if you use Jabber over SSL). If you can't do this, there 
> are different possibilities:
> - (Best solution:) If your company has a SOCKS proxy, add SOCKS support 
> to your client.
> - If your company has a HTTP proxy it may be possible to use it. 
> Different HTTP proxy hacks are possible. One of it is documented in 
> JEP-0020.
> 
> Tot kijk
>     Matthias
> 
> BTW: It was hard to quote your message. It would be nice if you don't 
> use HTML for mail.
> 
> -- 
> Fon: +49-700 77007770		http://matthias-wimmer.de/
> Fax: +49-89 312 88654		jabber://mawis@charente.de
> 
> 
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