How complicated is it to connect 2 ISP 2 firewalls together?

Hi Esmonde and welcome to the UTM Community!

Are these two SGs in the same building or room or can they somehow be connected directly?  What Sophos subscriptions are on each?

Cheers - Bob

Hi Bob,

The 2 devices are in the same building within blocks away and there is only 1 network cable available for me to connect the 2 SGs together.

Sophos subscription is base functionality, network protection, web protection and sandstorm. 

Regards,

Esmonde

Then, yes, it's possible.  The configuration in both will be nearly identical.  You will need to learn about Uplink Balancing and Multipath rules.  You will need firewall rules, masquerading rules and changes to 'Allowed Networks' in Web Filtering to enable the subnet(s) connected to the other SG to use the remote SG.

Cheers - Bob

Hi,

please keep in mind, if the connection cable between both UTM's is copper and longer than 100m you'll run into problems.

Dear Bob,

That's very complicated to a beginner to firewall like me. 

Is there any documents available?

I tried to find but no luck with keywords. 

Regards,
Esmonde

If this is a business, I would recommend that the initial configuration be done by someone in your area that has a lot of experience.  Once configured properly, the UTM is a dream to administer.  Configured by an experienced, talented CCIE with no WebAdmin experience, it's a nightmare.

Cheers - Bob