December 27th, 2013, 03:28 AM
UDP connection issues
I have connection issues with an application over UDP. The connection involves an alarm panel (hardware TCP/UDP/IP Card) and the software.
Now, I am having huge issues connecting over UDP to this panel. I have a forward on the router at the alarm side for UDP/TCP port 3001.
I spoke to tech support, who told me I would also need a forward on the client (software side) initiating the connection. Now I have to say I disagreed and said that NAT would take care of the port mapping, knowing to forward all responses on port 3001 to my private IP.
Anyway, I did this and still NO luck, using ping.eu, I used port check and sure enough the port is showing as OPEN telling me that there is a path through to the TCP card and that its listening.
So I have setup
On the server side
Port 3001 -----> forwarded to internal host 192.168.x.x (255.255.255.0) UDP/TCP
On the client side I have
Port 3001 -----> forward to the client (initiating the connection) at 192.168.x.x (also 255.255.255.0) UDP/TCP
As the images below indicate, the port is unreachable and im also getting failed ICMP requests as I had ICMP disabled on the router, now I doubt that matters, but to be sure, I enabled ICMP on the router and still no go.
How can I tell if the connection is getting OUT on the client side, and how can I tell if this is a issues with the panel or router on the server side?
I need to sort this for work, and this client is getting rather angry. (its been a while).
Gateway is @ 192.168.0.254 - Router/PPP
DNS is @ 192.168.0.1 - Windows Server 2008 DNS Server
DHCP is @ 192.168.0.1 - Windows Server 2008 DHCP Server
Unsure if this is any use :P
Last edited by onlinegamesnz; December 27th, 2013 at 03:31 AM.