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May 31, 2005, 8:00 am
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I have a specific need for a network setup and would
like you experts to comment on my work (Still learnig...)
for a 1841 router with ADSL WIC.
Requirements (Addresses are fictional):
Interface 0/0 Here we need a couple of global addresses, no NAT.
IP address 126.96.36.199 255.255.255.248 (/29)
Interface 0/1 Here we need a couple of local addresses with NAT to
2 of the /29 addresses above.
IP address 188.8.131.52 255.255.255.0
ATM interface 0/0/0 Here we have the same IP range as on Interface 0/0
The ATM is connected to ISP with a routed /29
It is expected that incomming packets to the 2 specific addresses in
the /29 get translated to 2 specific addresses on interface 0/1
while the 3 remaining addresses on ATM 0/0/0 get routed directly
to interface 0/0.
Proposed router CFG
ip address 184.108.40.206 255.255.255.248
ip address 220.127.116.11 255.255.255.0
ip nat inside
no ip address
dialer pool-member 1
ip address negotiated
ip nat outside
dialer pool 1
ppp authentication chap callin
ip route 0.0.0.0 0.0.0.0 Dialer1
ip nat inside source static 18.104.22.168 22.214.171.124
ip nat inside source static 126.96.36.199 188.8.131.52
Would the above configuration do what I want?
Is it nescesary to do this too:
ip nat outside source static 184.108.40.206 220.127.116.11
ip nat outside source static 18.104.22.168 22.214.171.124
Thanks for your reply to what is probably a beginner question
in the Cisco relm of things.
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