Adsl Internet access

[arumugasamy]

Hello,

I am using 1700 series router with 1-Adsl WIC to connect to the ISP for the internet access.

WAN IP is dynamic

Lan is 10.0.0.1 /8

I want to host an e-mail server with ip 10.0.0.2 /8.

How can the outside internet users access the server.

how can we do the pating with dynamic ip address?

If it is not ossible with dynamic then what is the alternaive configuration to solve this issue.

Thanks in advanvce

swamy

[sachinraja]

Hi swamy

dont try to do PAT for the server. Your email server should have a static translation for it to be accessed from outside... on the router, you can define a static NAT, through which it will be announced to the outside world.. use the following

ip nat inside source static 10.0.0.2 202.1.1.1

interface ethernet 0

ip nat inside

interface atm0

ip nat outside

outside users will then access the server through the IP 202.1.1.1

hope this helps.. all the best...

Raj

[arumugasamy]

Dear Raj,

Good

How can we use this dynamic ip 202.1.1.1 to access the e-mail server.

If the router uses dynamic ip then how can i let the external user get access to the e-mail server because it is dynamically changing

I think we have to get 1 global IP (202.1.1.1) for the e-mail server to do the static NAT on the router

I really fixed up with this issue.

Note : I come across the adsl alcatel speed touch modem configuration where 1 global address assigned to the wan interface is used as a NAT server for the internal e-mail server.

In cisco router how can we configure with only one IP address assigned for the wan interface (1-adsl WIC )

to nating to thee-mail server

I badly waiting for your reply

Thanks in advance

swamy

[sachinraja]

ya swamy.. you need to get a /32 or any free IP from your ISP.. ISP will route back that /32 towards ur DSL.. do not use any dynamic IP from the pool that you have configured...

do let us know if you need any more assistance

Raj

[Josef Oduwo]

See if you can get a static IP from your ISP.

Then use the methodology suggested by Raj to NAT your internal IP outside...

Cheers,

Josef.