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Opening ports on firewall

Posted on 2011-03-02
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Last Modified: 2012-06-21
I need to drop some PDA's into our network. The vendor tells me I need to open ports 5500 & 5501 tcp/uda. I think I added them successfully on the server. But, when I try to add them via the router I get an "Illegal Port" message. The vendor isn't much help and I'm not at all versed in the ways of firewalls and ports. The server is running Windows Server 2008 and the router is a comcast/SMC router. Please help. These PDA's are expensive, but they're dead weight until I can get these ports open.
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Question by:RVicente99
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Expert Comment

by:dbradley626
ID: 35020665
What type of router are you using?
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Expert Comment

by:bmitkovski
ID: 35020960
Do you need to set TCP and UDP for both ports?  And what type of router?
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Author Comment

by:RVicente99
ID: 35021343
The modem/router is an SMC8013WG-CCR, and yes, I need both TCP & UDP for both ports.
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Accepted Solution

by:
Paulclane earned 500 total points
ID: 35021395
I'm not familiar with SMC, but on some firewalls you have to create a NAT entry and then create a new service, (call it something like "Remote PDA"), and then add this service to the port forwarding section, along with the IP address of the server that the PDA's will connect to.
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Author Comment

by:RVicente99
ID: 35022142
That's where I'm getting the "Illegal Port" message. I'm trying to create a NAT port forwarding entry, but it's not letting me.
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Expert Comment

by:Paulclane
ID: 35022169
Is there a default service already entered with port 5500 or 5501?
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Author Comment

by:RVicente99
ID: 35022289
No there isn't. But, I did go back and tried to create a NAT entry and this time I was successful. When I tried to create both of them using a "range" it didn't work. But this time I created them individually and it seemed to work fine. If that's all I need to do to open these ports then I should be good. Otherwise, where do I go from here?
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Author Comment

by:RVicente99
ID: 35022567
Guess I'm still missing something cause those ports aren't showing as open. When I use a port detecting app to see them it times out when looking for these.
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Expert Comment

by:Paulclane
ID: 35025059
Does your firewall have the latest firmware?
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Author Comment

by:RVicente99
ID: 35027418
Firmware version is 2.11.19
I've gone on the SMC site and can't find any firmware updates for this device.
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Author Comment

by:RVicente99
ID: 35314878
I want to award the points to Paulclane. The question was left open-ended by me because I wasn't sure if there was anything else I needed to do, but there wasn't. I was able to create the NAT entry and then the ports just fine. The points should be awarded to Paulclane because it worked after I did it in the order that he suggested.
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Author Closing Comment

by:RVicente99
ID: 35314920
I was able to create the ports when I did it seperately. The router gives you the option to create them together but when I tried I got the error message. When I tried them seperately, after creating the NAT entry, it worked fine.
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