2 ip tunnels to 1 server
 

I made 2 vpn tunnels using gre between 3 machines: one tunnel between m1 and m2, the second tunnel between m3 and m2
My problem is that only the first tunnel is working, the second not.

The facts:

m1 internal ip 192.168.1.xxx, external ip xxx.xxx.xxx.xxx
m2 internal ip 192.168.2.xxx, external ip yyy.yyy.yyy.yyy
m3 internal ip 192.168.3.xxx external ip zzz.zzz.zzz.zzz

on m2 I have:

ip tunnel add tunnel1 mode gre remote xxx.xxx.xxx.xxx local yyy.yyy.yyy.yyy ttl 255
ifconfig tunnel1 192.168.2.x pointopoint 192.168.1.x up
route add -net 192.168.1.0/24 gw 192.168.1.x dev tunnel1
+
ip tunnel add tunnel2 mode gre remote zzz.zzz.zzz.zzz local yyy.yyy.yyy.yyy ttl 255
ifconfig tunnel2 192.168.2.x pointopoint 192.168.3.x up
route add -net 192.168.3.0/24 gw 192.168.3.x dev tunnel2


on m1 I have:
ip tunnel add t1 mode gre remote yyy.yyyy.yyy.yyy local xxx.xxx.xxx.xxx ttl 255
ifconfig t1 192.168.1.x pointopoint 192.168.2.x up
route add -net 192.168.2.0/24 gw 192.168.2.x dev t1

on m3 I have:
ip tunnel add t2 mode gre remote yyy.yyyy.yyy.yyy local zzz.zzz.zzz.zzz ttl 255
ifconfig t2 192.168.3.x pointopoint 192.168.2.x up
route add -net 192.168.2.0/24 gw 192.168.2.x dev t2

What is wrong with tunnel2 ?

finally, I managed to find the solution. ..... was a firewall problem

topic can be closed.