GRE Tunnels are RUINING MY LIFE!
 
Ok, maybe it isn't that bad. 
I am a Linux sophmore (for lack of a better term).  I have some experience, I have set up a Masq. Firewall at the company's office as well as one at home. 
Now... The fun part.  LInking the two so I can have access to office network assets from home.
 
Home:
    External: 65.28.x.y
    Internal: 192.168.55.1
    GRE Tunnel: "ofc"
 
Office:
    External 216.170.a.b
    Internal 192.168.5.1
    GRE Tunnel: "phome"
 
I have followed the information given in the GRE section, but to no avail.  I can't ping anything through the tunnel created, though it says the link is up.  The Tunnel runs from the Office External to Home External (and back)...
I used
#ip route add 192.168.5.0/24 dev ofc
and
#ip route add 192.168.55.0/24 dev phome
on home and office Firewall/Routers.. I am stuck-ed!
 
On the Home Firewall/Router:
#ping -I ofc 192.168.5.1
or
#ping 192.168.5.1
Result in %100 packet loss...
 
On the Office Firewall/router:
#ping -I phome 192.168.55.1
or
#ping 192.168.55.1
Result in %100 loss...
 
Any thoughts?

Patrick Dench
Application Specialist
www.acdisplays.com