Use Transparent Proxy or Non-Transparent Proxy?

Technically, it is easy on other firewalls. BUT.  Transparent proxy on XG is impossible.  It just cannot be done.   I assume you can do it with Sophos WEB gateway and a firewall from another supplier.  Or maybe from Sophos' own UTM.  But do not waste 6 months trying to figure out on XG.  It is not gonna work.  Just cannot do a rule of the type :

From this Zone, this LAN, these Services --- to --- this Zone, this LAN/WAN, these Services --- port forward to --- this IP Address, these Services.

Port forward optional, depending on the WEB Gateway. 

for example, From: LAN, 192.168.1.0/24, HTTP, HTTPS, FTP --- to --- WAN, ANY, HTTP, HTTPS, FTP --- port forward to --- 192.168.1.2.

Where 192.168.1.2 is the arbitrary address of a WEB gateway.  And 192.168.1.0/24 being the internal network.  8 (eight) hours of Sophos professionnal service have proven unable to setup something as basic as that.  Easily done on $100 chinese firewalls.

It could be possible in command line maybe ...

Transparent proxy outgoing is easy and I think the is what the original post was about?

I'm not quite sure if it is the same with XG, but on UTM the transparent mode only covers two ports (if activated), http and https.
Every connection to something like 8443, 8080 runs completely unproxied in transparent mode. Only in standard mode you can (and have to) define, which ports are protected.

Yes, you're right, thats what I meant.

One more thing, how to configure XG to use only non-transparent mode? I can't find it anywhere in the handbook.

Is XG configured to use both as standart?

Regards

Yes, you're right, thats what I meant.

One more thing, how to configure XG to use only non-transparent mode? I can't find it anywhere in the handbook.

Is XG configured to use both as standart?

Regards

Hi Dwayne,

as ManBearPig advised you need to setup a proxy.pac file that automatically loads or is loaded on the each machine when it tries to aces the interior at boot time.

I tried hardcoding the proxy details into IE and FF, but that failed when the laptops left home.

Also, though not 100% sure about this but you would need a line or two in you proxy pac to cover each web browser your clients might use then put a drop firewall rule for orts 80, 8080 etc.

ian