Known problems updating zywall firmware
On this page I will go over the most common problems I find when helping people get their port forwarding working and how to fix them.
If you would like to know more about what port forwarding is you can check out my page "Port Forwarding in a Nutshell" When testing your port forwarding to your computer make sure to use my Port tester program and not an online port tester.
So when the port tester program says the ports are open you can count that they are :-)" The port tester is only for testing to your computer, not to other devices, because it has to open the port on the system to listen for a connection. Thankfully it is easy to get port forwarding if this is happening.
So the port tester is of no use if testing say your DVR or something else other than the computer. Enter the IP you wrote down into the DMZ page and enable DMZ. We simply tell the first router to send all incoming connections to the 2nd router where the port forwarding rules are.
Some users have put internet IP's in or just the wrong IP all together (Such as putting their computers IP in when they want the IP from their Xbox).
So lets say I want to make a port forwarding rule that sends an incoming connection to my PS3.
Now some of you may say (my fellow techs out there) "Why on earth would someone put the wrong IP like that in? I have also added this tool to the Simple Port Forwarding program under the tools menu) As you can see by this example this routers internet IP is a local address, this means we are behind another router. Find the status page that shows the WAN/Internet IP address and write it down. While other routers let you put the whole IP in (Some users accidentaly put the internet IP instead of the Local IP in).So in this case I logged into this router using and to log into the other router I would use (The gateway address in the picture) . People can get confused on what IP address they should put in.So users think they have antivirus but don't realize it is also a firewall.So when a warning pops up about a program trying to connect to the net they seem to like to hit block by default, thus breaking things more than helping.