vpn 3000 to checkpoint ipsec

hi guys,

i've being working on establishing a vpn between a vpn 3000 and a checkpoint, the problem i am having on the vpn3000 is that if i dont select "reverse route injection" it wont establish the vpn.

i thought it may have being because the local lan routes didnt exist on the vpn 3000, so i added statics to match the network lists, but it still wouldnt come up, as soon as i enable reverse route injection it works fine.

any ideas?

thanks

Adam Baxter.