I have a Vyatta firewall installed and I am now trying to connect to a PPTP host from one of my computers.
I allow TCP port 1723 through my firewall like this:
rule 300 {
action accept
description "allowed trafic"
destination {
port 21-23,53,80,123,119,443,445,465,587,843,993,1025-65535
}
protocol tcp_udp
state {
new enable
}
}
and I added an extra rule for the GRE packets:
rule 308 {
action accept
description "PPTP VPN"
protocol gre
}
Still, I get the message
A connection to the remote computer could not be established, so the port for this connection was closed.
I tried the same VPN on another PC, on another network, where it worked, so the VPN is OK.