
Contents
ix
Cisco PIX Firewall and VPN Configuration Guide
78-15033-01
Using Secure Unit Authentication 4-6
Overview 4-6
Establishing a Connection with SUA Enabled 4-7
Managing Connection Behavior with SUA 4-7
Using Individual User Authentication 4-8
Using X.509 Certificates 4-9
Verifying the DN of an Easy VPN Server 4-10
Using the PIX Firewall PPPoE Client 4-11
Overview 4-11
Configuring the PPPoE Client Username and Password 4-12
Enabling PPPoE on the PIX Firewall 4-13
Using PPPoE with a Fixed IP Address 4-13
Monitoring and Debugging the PPPoE Client 4-14
Using Related Commands 4-15
Using the PIX Firewall DCHP Server 4-15
Overview 4-15
Configuring the DHCP Server Feature 4-17
Using Cisco IP Phones with a DHCP Server 4-19
Using DHCP Relay 4-20
Using the PIX Firewall DHCP Client 4-21
Overview 4-21
Configuring the DHCP Client 4-21
Releasing and Renewing the DHCP Lease 4-22
Monitoring and Debugging the DHCP Client 4-22
CHAPTER
5 Configuring Application Inspection (Fixup) 5-1
How Application Inspection Works 5-1
Using the fixup Command 5-4
Basic Internet Protocols 5-6
DNS 5-6
FTP 5-7
HTTP 5-9
ICMP 5-9
IPSec 5-9
PPTP 5-10
SMTP 5-11
TFTP 5-11
Application Inspection 5-12
Sample Configuration 5-13
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