Cisco Cisco ASA 5580 Adaptive Security Appliance Release Notes

We will document interim release features at the time of the next maintenance or feature release. For a 
list of resolved caveats for each ASA interim release, see the interim release notes available on the 
Cisco.com software download site.

Clientless SSL VPN browser 
support

The ASA now supports clientless SSL VPN with Microsoft Internet Explorer 9 and Firefox 4.

Compression for DTLS and 
TLS

To improve throughput, Cisco now supports compression for DTLS and TLS on AnyConnect 
3.0 or later. Each tunneling method configures compression separately, and the preferred 
configuration is to have both SSL and DTLS compression as LZS. This feature enhances 
migration from legacy VPN clients. 

Using data compression on high speed remote access connections passing highly 
compressible data requires significant processing power on the ASA. With other 
activity and traffic on the ASA, the number of sessions that can be supported on the 
platform is reduced.

We introduced or modified the following commands: anyconnect dtls compression [lzs | 
none] and anyconnect ssl compression [deflate | lzs | none].

Regular expression 
matching for the show asp 
table classifier and show 
asp table filter commands

You can now enter the show asp table classifier and show asp table filter commands with a 
regular expression to filter output. 

We modified the following commands: show asp table classifier match regex, show asp table 
filter match regex.