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Old 04-21-04, 06:57
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Default What ports are blocked by my firewall?

I am currently using the internet behind a firewall that i have no control over. I need to find out what ports i can use for proxies etc. how can i find out what ports the firewall is blocking.

Im not sure if this is the right form but any help would be appreciated. Thanks.
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Old 04-21-04, 14:46
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certain ports are blocked by my firewall(ie. 23,6667 etc). These ports do not allow in/out connections.

My question is .. how can i find out all the ports that are blocked.

Is there a program that will probe my firewall and tell me all the ports that cannot be used.
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Old 04-21-04, 17:31
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You can try www.grc.com, click on "Shields Up", scroll down and click on "Shields Up" again, click on "Proceed" if you're a new user, and click on "All Service Ports". It wills scan the first 1000 +/- ports.
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Old 04-22-04, 08:34
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Quote:
Originally Posted by sagem
I am currently using the internet behind a firewall that i have no control over. I need to find out what ports i can use for proxies etc. how can i find out what ports the firewall is blocking.

Im not sure if this is the right form but any help would be appreciated. Thanks.
All ports are blocked by a Firewall, except those (if any) who are deliberately open by the Admin.
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