3691.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:

--
Sid:
3691

--
Summary:
This event is generated when network traffic that indicates an instant
messaging client is being used.

--
Impact:
Possible policy violation.  Instant Messenger programs may not be
appropriate in certain network environments.

--
Detailed Information:
This event indicates that the Yahoo IM client is being used on the protected
network.

Specifically a Yahoo Messenger Message was observed.

--
Affected Systems:
	All systems using Yahoo IM client
	
--
Attack Scenarios:
It is possible to transfer files between hosts using instant messaging
applications. This may lead to the loss of proprietory and confidential
material.

--
Ease of Attack:
Simple.

--
False Positives:
None known.

--
False Negatives:
None known.

--
Corrective Action:
Disallow the use of IM clients on the protected network and enforce or
implement an organization wide policy on the use of IM clients.

--
Contributors:
Sourcefire Vulnerability Research Team
Alex Kirk <[e-mail]>
Nigel Houghton <[e-mail]>

--
Additional References:

--