Whether you are troubleshooting network problems or trying to set up a VPN…, knowing what address your computer has configured as the default gateway is always useful. Running a simple command from the terminal can give you this.
root@lifelinux:~# route -n
Sample outputs:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.64.64.64 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ppp0
0.0.0.0 10.64.64.64 0.0.0.0 UG 0 0 0 ppp0
10.64.64.64 is the address for my default gateway.