[ale] Routing Questions

Dow Hurst dhurst at kennesaw.edu
Fri Nov 30 18:13:19 EST 2001


Ahhh!  You've reached the no man's land of a VPN!  You will need to have
a PPP tunnel piped thru a SSH connection.  The PPP interfaces will be
routable but your current network addresses are non routable addresses. 
Bob Toxen can set you up quickly if you want a professional job. 
Otherwise, you will need to understand how to pipe PPP thru SSH.  The
O'Reilly book on VPN's gives examples of this.  You have to be root to
create the PPP interfaces so sudo is required as well.  IPsec will work
in a different way but your firewall/NAT routers will have to do the
IPsec using the routable addresses assigned by the ISPs just like the
PPP tunnel scenario.
Dow

Chris Fowler wrote:
> 
> I have 2 networks now.  One in Buford and One in Alpharetta.
> 
> Alpharetta:  192.168.2.0
> Buford:  192.168.1.0
> 
> Both networks are connected to the internet using telocity.  I want to be able to route packets between both of the private nets.  Is this possible since these
> are 192.168.*.
> 
> Alpharetta:
> 
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
> 64.129.133.252  0.0.0.0         255.255.255.252  U         40 0          0 eth1
> 192.168.2.0       0.0.0.0          255.255.255.0     U         40 0           0 eth0
> 127.0.0.0           0.0.0.0          255.0.0.0             U         40 0           0 lo
> 0.0.0.0               64.129.133.  254  0.0.0.0         UG       40 0          0 eth1
> 
> Buford:
> Kernel IP routing table
> Destination     Gateway                 Genmask         Flags    MSS Window  irtt Iface
> 64.129.131.124  0.0.0.0               255.255.255.252 U          0 0          0 eth1
> 192.168.1.0        0.0.0.0               255.255.255.0     U          0 0          0 eth0
> 127.0.0.0            0.0.0.0               255.0.0.0             U          0 0          0 lo
> 0.0.0.0               64.129.131.126  0.0.0.0                 UG        0 0          0 eth1
> 0.0.0.0               192.168.1.254    0.0.0.0                 UG        0 0          0 eth0
> 
> When I issue this command in Alpharetta:
> [root at skylab /etc]# route add -net 192.168.1.0 netmask 255.255.255.0 gw 64.129.131.124 eth1
> SIOCADDRT: Network is unreachable
> 
> Buford:
> [root at mir /etc]# /sbin/route add -net 192.168.2.0 netmask 255.255.255.0 gw skylab metric 1 eth1
> SIOCADDRT: Network is unreachable
> 
> I can ping each machine from each location.
> 
> Thanks,
> Chris Fowler
> 
> ---
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-- 
__________________________________________________________
Dow Hurst                   Office: 770-499-3428
Systems Support Specialist  Fax:    770-423-6744
1000 Chastain Rd.
Chemistry Department SC428  Email:dhurst at kennesaw.edu
Kennesaw State University         Dow.Hurst at mindspring.com
Kennesaw, GA 30144
*********************************
*Computational Chemistry is fun!*
*********************************

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