[ILUG] Testing for blocked ports / protocols.

[Luke Ashe-Browne]

I would say that doing nmap to test protocols would be one way, however 
that is a form of port scanning which alot of routers/firewalls will 
drop when detected and just seem like everything is blocked. So unless 
you can disable detection of port scans, try that out?

Darragh Ó Héiligh wrote:
> Afternoon all,
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> I hope you're having an equally uneventful Friday.
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> I've been asked to look into a problem with a new RAS solution.  The Juniper
> router / firewall that we're now using seems to be blocking most protocols.
> Http seems to be the main one that comes to mind that is not blocked.
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> I've set up a test lab here with a DSL connection with a Juniper router
> connected and will use a laptop running Ubuntu to try to figure out what
> protocols are being blocked and if it is actually a problem with the router/
> firewall or although unlikely, with the central firewall.
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> Is there a way that anyone can tell me of testing the connection for blocked
> protocols or ports?
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> TCPDump may do it but I could really do with a kick in the right direction.
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> Thanks
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> Darragh
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> www.digitaldarragh.com
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> a
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