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CISCO Router WAN (HDLC), NAT and Transparent Proxy Example
Private Network: 192.168.0.0/24
External Network (DMZ): 202.0.0.0/28
CISCO Router (2600): Ethernet0/0: 192.168.0.4
Etnernet0/1: 202.0.0.14
Serial0/0: HDLC (WAN)

The Internet Server1: 202.0.0.1 (DNS, SMTP, POP3, PROXY)
The Internet Server2: 202.0.0.2 (DNS, WWW, SYSLOG, NTP)

gw-dit#show running-config
Building configuration...

Current configuration : 3424 bytes
!
version 12.1
service nagle
no service pad
service timestamps debug datetime msec localtime show-timezone
service timestamps log uptime
service password-encryption
!
hostname gw-dit
!
boot system flash
logging buffered 8192 debugging
aaa new-model
aaa authentication login default local enable
enable secret 5 12345678901234567890
.....

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