More error -8 issues - Linksys BEFSR41 to Airport Express

Question

Hey there, I hope you guys can help b/c I am having a heck of a time with this. I'm having Error-8 issues with my ichat AV 3.1 despite numerous changes. Here's the setup.
Motorola cable modem-->Linksys BEFSR41 wired router-->Airport Express and Vonage VOIP conected to router.
Imac Intel 2 GHZ 20" and MBP CD 2.16GHZ both running Tiger 10.4.10
Router setup: DHCP enabled (Obtain IP automatically, all port forwarding ports opened as per Ralph's numerous posts. Disabled DMZ, Disabled UPnP b/c Airport Express does not support (Even though the router CAN use UPnP). MTU enabled 1492
Comcast Cable: I called them and they do not give out DNS's for setting up static IP addresses.
Router IP: 192.168.1.1
DHCP starting IP: 192.168.1.100
Range: 192.168.1.100 - .149
Subnet 255.255.255.0
Airport Express setup:
Internet tab: Using DHCP
IP address: 192.168.1.102
DNS Server: 68.87.85.98, and (in grey next to it) 68.87.69.146
WPA2 Personal Security
Network tab: "Distribute IP addresses" DISABLED
Port mapping, Access control, and WDS tabs all left blank.
Imac Network Prefs:
Airport connected to internet
IP Adddress: 168.192.1.101 Using DHCP
Mac Firewall OFF
Quicktime Prefs: Set to 1.5 MBPS T1/ Internet LAN
iChat Prefs: AIM port set to 443 b/c of Vonage. Bandwidth set to NONE.
MBP Network prefs:
Airport connected to internet
IP Adddress: 168.192.1.100 Using DHCP
Mac Firewall OFF
Quicktime Prefs: Set to 1.5 MBPS T1/ Internet LAN
iChat Prefs: AIM port set to 443 b/c of Vonage. Bandwidth set to NONE.
Main issues.... error -8 when trying to video or audio chat. Tested with appleu3test03= NO GO with Intel iMac but MBP works! Tried vid chat with brother and NEITHER WORK.
I cannot figure out what is going on but I think it is the router. Problems started when I switched to Linksys from netgear. Could it be that I need to just pony up and get an Airport Extreme so that I can utilize UPnP? Or am I missing something.
Thanks in advance for the help.
Pete
iMac Intel and MBP   Mac OS X (10.4.10)  

Answer 1

Hi,
I would renumber the devices radiating out from the router (192.168.1.1)
Airport 192.168.1.100
Computer one 192.168.1.101
Computer two 192.168.1.102
It's not a big thing but I prefer it in case the power goes off or things needs rebooting. And it points to the order of things
The Airport doing NO Distributing Addresses should allow UPnP to work. It's just a dumb Wireless Access Point now.
Otherwise if you are doing Port Forwarding it will be to only one Computer and only Text chatting will work on both due to the 443 port being below 1024(NAT)
If the Airport is not allowing UPnP then I would go for Port Triggering if your Linksys does it.
Some BEFS41 versions do. I have linked yo to the lowest version listed on the Port Forward site's Triggering pages.
Don't worry too much about the PC app they say you need.
Fill in the Trigger port at the top and without hitting enter scroll down to see how that effects the table.
Then set it up like this
This pic shows Port 5190 and the AV ports
You will need to add the Bonjour Ports (5297, 5298 and 5353) and Jabber ones (5220, 5222, 5223) as single lines like the port 5190
On My Linksys you did not have to specify Protocols. Nor do you on the link above.
As you have gone Static (router to Airport) you could try allowing the Airport to do Distributing Addresses as the Subnet problem will have been dealt with and the NAT issue will be more linear.
The Vonage device will have conflict on port 5060 (In fact 5060-5063) with iChat if In-Line between the computers and the Modem. Your set up suggests that this is not the case and it should not be an issue.
If by Brother you mean the other computer this will need the Bonjour Ports in both directions (5297, 5298 and 5353) to be able to work.
Strangely this still needs the port 5060 and does contact the SNATMAP server according to my Little Snitch hence the reason for UPnP or Port Triggering for your LAN.
2:09 PM Wednesday; July 11, 2007