CSC SSM module is specifically for scanning four kinds of traffic http, ftp, smtp and pop3. The CSC SSM module updates itself with Trend micro updates to keep in track with the lates viruses, spyware, along with all these features the CSC SSM module can do functions like URL filtering, blocking.
Though the CSC SSM module only scans the network traffic coming in and going out of it. There is no gurantee for it to stop viruses from coming from sources like your floppy drives or USB devices. Ofcourse you can weigh the pros and cons of this and decide.
To wrap up i would say remember CSC _ SSM scans only scans network traffic and not things that might attack your host from sources like usb or floppy. You could just go for CSC if you feel the only way your going to get attacked is through the internet.
Base license has the following capability
# Detect and take action on viruses and malware in the network traffic.
# Block compressed or very large files that exceed specified parameters.
# Scan for and remove spyware, adware, and other types of grayware.
Security license has the following capability
# Reduce spam and protect against phishing fraud in your smtp and pop3 traffic
# Set up content filters that enable you to allow or prohibit email traffic containing key words or phrases.
# Filter/Block URL?s that you do not want employees to access, or URL?s that are known to have hidden or malicious purposes.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...