Cisco Cisco IPS 4255 Sensor 릴리즈 노트

SMB Predator Decoy trees evasion

Buffer overflow attempt to exploit the call_trans2open function of Samba

Evasion with small RPC segments in conjunction with window resizing

Base64 decoding support for HTTP traffic:

Inspection capability improvement with cross site scripting (XSS)

Prevents client-side exploits by inspecting Base64 encoded data

Decodes the HTML, CSS, and XML Base64 encoded data carried in the HTTP response payload

Improved software capacity to enable additional signatures

TCP failover/fallback session continuity

For detailed information on threat profiles, refer to Configuring Threat Profiles.

For detailed information on configuring LACP on the 4500 series sensors, refer to Configuring 
LACP. 

You can find major and minor updates, service packs, signature and signature engine updates, system 
and recovery files, firmware upgrades, and Readmes on the Download Software site on Cisco.com. 
Signature updates are posted to Cisco.com approximately every week, more often if needed. Service 
packs are posted to Cisco.com in a release train format, a new release every three months. Major and 
minor updates are also posted periodically. Check Cisco.com regularly for the latest IPS software.

You must have an account with cryptographic access before you can download software. You set this 
account up the first time you download IPS software from the Download Software site. 

You must be logged in to Cisco.com to download software. You must have an active IPS maintenance 
contract and a Cisco.com password to download software. You must have a sensor license to apply 
signature updates. 

To download software on Cisco.com, follow these steps:

Log in to 

.

From the Support drop-down menu, choose Download Software.

Under Select a Software Product Category, choose Security Software.

Choose Intrusion Prevention System (IPS).

Enter your username and password.

In the Download Software window, choose IPS Appliances > Cisco Intrusion Prevention System and 
then click the version you want to download.

You must have an IPS subscription service license to download software.