how can i prevent messenger communications

Answered Question
Oct 19th, 2009
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dear experts, i'm using ASA 5520 and i want to deny the msn and yahoo messengers without affecting the hotmail or yahoo websites access, so i want to know the specific ports which i should deny and on which transport layer protocols (tcp or udp), i appreciate ur urgent answer because this is very important for me in my security work, thanks alot

Correct Answer by kicharle about 7 years 5 months ago

Hi


I think, you can get the list of port numbers from google.


But you can try the following:


class-map type inspect im match-any yahooandmsn

match protocol msn-im

match protocol yahoo-im


policy-map type inspect im yahoomsn

parameters

class yahooandmsn

reset





With regards

Kings





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Correct Answer
kicharle Mon, 10/19/2009 - 02:44
User Badges:

Hi


I think, you can get the list of port numbers from google.


But you can try the following:


class-map type inspect im match-any yahooandmsn

match protocol msn-im

match protocol yahoo-im


policy-map type inspect im yahoomsn

parameters

class yahooandmsn

reset





With regards

Kings





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