This work is very helpful, but for novice it can be added (Page 8, before words

"To complete this step, do:

/etc/init.d/shorewall restart")

because if I establish VPN connection then I get new zone. I added:

To add in file /etc/shorewall/policy before the last line:

##### Added for support VPN connections

vpn loc ACCEPT

vpn $FW ACCEPT

loc vpn ACCEPT

$FW vpn ACCEPT

To add in file /etc/shorewall/zones before the las line:

vpn ipv4

To add in file /etc/shorewall/interfaces before the last line:

vpn ppp0

It was necessary to my system to allow VPN connections from Internet.

Sorry for dump question, but why in /etc/shorewall/rules exists a line

DNAT   net   fw:192.168.1.1 47

I can't find the protocol 47 anywhere

Sincerely yours, buhcia2006 dog yandex dot ru