ASA SSM
Security Service Modules adds an additional appliance in to the ASA
Gigabit ethernet port for out of band management
4GE-SSM - not a appliance, just adds 4 gigabit ethernet interfaces to the ASA

SSM-10 - 2.0Ghz, 1 GB RAM
SSM-20 - 2.4Ghz, 2 GB RAM

CSC-SSM-10/20
Content Security and Control SSM - Endpoint Protection - small to midsize businesses
- scans traffic for malware in SMTP, HTTP, Webmail, and FTP (Base License)
- scans traffic for known spyware files (Base License)
- blocks file types using true type technology (Base License)
- filters URL categories to limit web access (Plus License)
- blocks access to specified URLS and know phishing sites (Plus License)
- blocks known spam messages using Trend Micro (Plus License)
- blocks email attachments types using true type (Plus License)
- Up to 120 Mbps throughput
CSC-SSM-10
- base licence: 50 users
- plus licence upgrade options: 50, 100, 250, 500 users
CSC-SSM-20
- base licence: 500 users
- plus licence upgrade options: 500, 750, 1000 users
AIP-SSM-10/20
Advanced Inspection and Prevention SSM - Network Protection - Enterprise businesses
- Integrates an IPS sensor in the ASA
- Detects malicious use of the network
- defends against DOS style attacks
- Uses detection techniques:
- Signature-based IPS
- Anomaly-based IPS
- Policy-based IPS
- Protocol Analysis
- ASA 5510 + AIP-SSM-10: 150 Mbps IPS Throughput
- ASA 5520 + AIP-SSM-10: 225 Mbps IPS Throughput
- ASA 5520 + AIP-SSM-20: 375 Mbps IPS Throughput
- ASA 5540 + AIP-SSM-20: 450 Mbps IPS Throughput