asking odd mediaproxy,,

I've just setting SIP Express Router and Mediaproxy in 1 PC. Then, I'm setting in NAT Router that only activated for MASQUERADE like this:

iptables -A POSTROUTING -s 172.17.2.0/24 -o eth1 -j MASQUERADE

NB:I assume in network 10.100.0.0/24 (eth1) as public IP and 172.17.2.0/24 as private IP.

When I call with x-lite and activated mediaproxy service, the connection running well with 2 direction (full duplex from 10.x.x.x to 172.x.x.x conversely).But,when I stop mediaproxy service (for proving that voice packet if pass NAT will connect half duplex or maybe broken),apparently this connection still running well with 2 direction.

my question,,
why this happened?
are having trouble with mediaproxy or SIP Express Router?
i'm confusing,,

thanks very much,,

pepunk :

I've just setting SIP Express Router and Mediaproxy in 1 PC. Then, I'm setting in NAT Router that only activated for MASQUERADE like this: iptables -A POSTROUTING -s 172.17.2.0/24 -o eth1 -j MASQUERADE NB:I assume in network 10.100.0.0/24 (eth1) as public IP and 172.17.2.0/24 as private IP.

Just out of curiosity, did you mean 10.100.0.0 as your router WAN IP Address? Also, the 10.100.0.0 address is under subnet class A and its netmask should be 255.0.0.0, shouldn't it? If so, the 172.17.2.0 address which is under subnet class B should have a netmask of 255.255.0.0, shouldn't it?

mazilo :

Just out of curiosity, did you mean 10.100.0.0 as your router WAN IP Address? Also, the 10.100.0.0 address is under subnet class A and its netmask should be 255.0.0.0, shouldn't it? If so, the 172.17.2.0 address which is under subnet class B should have a netmask of 255.255.0.0, shouldn't it?

i just setting as my experiment,i think it doesn't matter with subnet in private network 10.x.x.x and 172.x.x.x to setup with prefix 24,i just assumed that 10.x.x.x as a public network and 172.x.x.x as private network to configure NAT,,

cmiiw,,