Async routing VPN box

Setting up a new VPN box. This is slightly seperate from our existing main internet link (same outside subnet).

Any issues to watch, or is it a big no-go to async route all outbound traffic to the main internet link, and only allow internet.

​

Effectively route statements will be :

route inside 0.0.0.0 0.0.0.0 {gateway}

which should result in a route table of:

S* 0.0.0.0 0.0.0.0 [1/0] via {inside gateway}, inside

C {isp IP} 255.255.255.0 is directly connected, outside