[dys152]

I think you are looking for "fwaccel stat", gives output like the following:

Accelerator Status : on
Templates : disabled by FireWall-1 starting from rule #17
Accelerator Features : Accounting, NAT, Cryptography, Routing,
HasClock, Templates, Synchronous, IdleDetection,
Sequencing, TcpStateDetect, AutoExpire,
DelayedNotif, TcpStateDetectV2, CPLS, WireMode
Cryptography Features : Tunnel, UDPEncapsulation, MD5, SHA1, NULL,
3DES, DES, CAST, CAST-40, AES-128, AES-256,
ESP, LinkSelection, DynamicVPN, NatTraversal,
EncRouting

As you can see, on this firewall, SecureXL is disabled from rule 17 onwards (due to client authentication).