Scan TCP/IP traffic for viruses

[Vincent BRAY]

Dear all,
 
I am currently looking for an application that can check the TCP/IP traffic on my freeBSD server and detect viruses on download file or peer to peer traffic (ie: bittorent, emule). 
 
I would like to know if this type of application are present in the freebsd ported application.
 
I found the application avast + dazuko. But these application are not present into your section "ported application". Could you give me your advice.
 
Thanks in advance
 
Regards
 
Vincent

		
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