protocol filter

[Guest]

[lupin]

hello,is possible add to comodo firewall 3 a filter of protocols where i,for example, can choose if accept or deny  udp and tcp packets,http,ftp, netbios packets..and any other protocols?

[lupin]

for example,if i go to
http://it.wikipedia.org/wiki/Suite_di_protocolli_Internet
at box of right there are all type of protocols for each level of iso/osi standard...can be implemented a filter where i can choose what protocol block and what protocol allow?sorry for my poor english

[Toggie]

Hi lupin. You can go to Network Security Policy, create a rule, then select Add/Add. Choose IP Details then choose IP Protocol, choose which ever you want, there is even a custom option.

[lupin]

yes but there aren' t ip such as ftp,http,netbios,pop3...

[Toggie]

To control data flow through the ports you indicated use port sets from the firewall main page. Each port is associated IANA defined number. for example HTTP = port 80.

[lupin]

for example,if i would block all packets that have netbios or sop protocol,how can i do?

[Coolio10]

NetBIOS is port 139. Not sure what SOP is though?

[lupin]

netbios isn't only 139...sop is the protocol of sopcast,a program for see tv at streaming...sorry for my poor english

[Toggie]

NetBIOS uses the following ports and protocols:

NetBIOS Name Service - UDP port 137
NetBIOS Datagram Service - UDP port 138
NetBIOS Session Service - TCP port 139

You would need to create a new port set for 137-139, then create some rules to allow the protocols.

Unfortunately, I know nothing about SOP, but the principle is the same, you just need to find out which ports and protocols it uses.

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