TomatoUSB

Hi,

My setup is : Thompson TG585 DSL Router -> Asus RT-N16 with Tomato USB. In the Thompson, I set it to "assign the public IP address" to the Asus router, so the Asus WAN interface has the external IP assigned to it.

I setup the Port Forwarding on the Asus to the PAP2T adaptor as per instructions from the ISP:

On Proto Src Address Ext Ports Int Port Int Address Description
On UDP 53 53 192.168.11.50 DNS
On UDP 5060 5061 192.168.11.50 SIP Communications
On UDP 5082 5082 192.168.11.50 SIP Outbound Proxy
On UDP 3478 3478 192.168.11.50 Stun Server Communications
On UDP 49152 65534 192.168.11.50 VOICE Traffic

Last night, it was working fine so I was pretty happy about this. After a reboot this morning, something is getting blocked. I can dial out and connect to the recipient, and they can hear me, but I cannot hear them. Trying to dial into my phone it does not connect, so I believe it's something getting blocked coming in.

On the logs, there is this entry which relates to it every call I make in:
Jul 28 12:42:20 unknown user.warn kernel: DROP IN=vlan2 OUT= MAC=01:00:5e:00:00:01:00:26:44:5b:87:b2:08:00:46:c0:00:24 SRC=[THOMPSON IP ADDRESS] DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=877 DF OPT (94040000) PROTO=2

The SRC address is the Thomson router internal IP, which is not what I would expect.

Any help would be appreciated.

This problem looks to be unrelated to Tomato/Asus. I tried swapping the Thomson out with a Dynalink one, and the PAP worked fine. Tried putting the Thomson in and it stopped working again.

The way I got it to work with the Thomson was to take off the "Assign the public IP address of a connection to a LAN device" and then assign it back again. The Asus WAN gets a release and renew and the phone worked again. I think the Thomson does some filtering with SIP that I haven't been able to resolve, so it will be something like that happening after a reboot that is gotten around by assigning the external IP to the Asus.