What Kind of Firewall Is FireWall-1?
Check Point advertises FireWall-1 as primarily a Stateful Inspection firewall. Although this is certainly FireWall-1's biggest strength, FireWall-1 uses both Stateful Inspection and application proxies. Application proxies are used when content security or user authentication is necessary for HTTP, Telnet, rlogin, FTP, and SMTP. Stateful Inspection is used for all other security functions. To be fair, most commercial and even homegrown firewalls employ some combination of these two technologies because none of the technologies can provide all the necessary functionality.
FireWall-1 also offers some other interesting capabilities, many of which are covered in future chapters:
Site-to-site VPNs
Client-to-site ...
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