Going from 8.3.2 to 8.4.4.1 - Any Gotchas in config?

[stownsend]

Our SIP Provider believe that out ASA is doing something to the SIP Packets we are passing through it.  They would like us to upgreade to the latest and greatest verison of the ASA Software.

I have the softeare image (asa844-1-k8.bin) and want to know if I should prepare for any issues in the Upgrade.

Here is the Info on the ASA

Cisco Adaptive Security Appliance Software Version 8.3(2) 
Device Manager Version 6.3(4)
Compiled on Fri 30-Jul-10 17:49 by builders
System image file is "disk0:/asa832-k8.bin"
Config file at boot was "startup-config"
jack up 306 days 18 hours
Hardware:   ASA5510, 1024 MB RAM, CPU Pentium 4 Celeron 1599 MHz
Internal ATA Compact Flash, 256MB
BIOS Flash M50FW016 @ 0xfff00000, 2048KB
Encryption hardware device : Cisco ASA-55x0 on-board accelerator (revision 0x0)
                             Boot microcode   : CN1000-MC-BOOT-2.00 
                             SSL/IKE microcode: CNLite-MC-SSLm-PLUS-2.03
                             IPSec microcode  : CNlite-MC-IPSECm-MAIN-2.06
 0: Ext: Ethernet0/0         : address is 0022.bdd7.5688, irq 9
 1: Ext: Ethernet0/1         : address is 0022.bdd7.5689, irq 9
 2: Ext: Ethernet0/2         : address is 0022.bdd7.568a, irq 9
 3: Ext: Ethernet0/3         : address is 0022.bdd7.568b, irq 9
 4: Ext: Management0/0       : address is 0022.bdd7.5687, irq 11
 5: Int: Not used            : irq 11
 6: Int: Not used            : irq 5
Licensed features for this platform:
Maximum Physical Interfaces    : Unlimited      perpetual
Maximum VLANs                  : 50             perpetual
Inside Hosts                   : Unlimited      perpetual
Failover                       : Disabled       perpetual
VPN-DES                        : Enabled        perpetual
VPN-3DES-AES                   : Enabled        perpetual
Security Contexts              : 0              perpetual
GTP/GPRS                       : Disabled       perpetual
SSL VPN Peers                  : 2              perpetual
Total VPN Peers                : 250            perpetual
Shared License                 : Disabled       perpetual
AnyConnect for Mobile          : Enabled        perpetual
AnyConnect for Cisco VPN Phone : Disabled       perpetual
AnyConnect Essentials          : Enabled        perpetual
Advanced Endpoint Assessment   : Disabled       perpetual
UC Phone Proxy Sessions        : 2              perpetual
Total UC Proxy Sessions        : 2              perpetual
Botnet Traffic Filter          : Disabled       perpetual
Intercompany Media Engine      : Disabled       perpetual
This platform has a Base license.

[Jennifer Halim]

The configuration is the same between version 8.3.2 and 8.4.4, however, i can't really speak for bugs that might exist or might be resolved in the later version. It really depends on your configuration and your environment.

Here is the release notes for version 8.4 for your reference:

http://www.cisco.com/en/US/docs/security/asa/asa84/release/notes/asarn84.html

You might be able to spot something which is specific to your environment.

BTW, 8.4.4(5) is the latest, so you might want to go to that version instead.