Multiple Static IP Addresses on 1 WAN Connection

[crocks]

We have been provided 5 Static IP Addresses from our Service provider 208.124.xxx.74 to .78 with a Gateway 208.124.xxx.73

I have Cisco 1811 Router. I have configured the Router to use 1 of the WAN Connections using 208.124.xxx.74 (FastEthernet1)

How would I set up the Router to allow traffic from the other Static IP Addresses (208.124.xxx.75 to .78)?

I am planning on using the other Static IP Addresses for Email and Webserver.

 

[brianinms]

ip nat inside source static x.x.x.x y.y.y.y


x.x.x.x = private ip
y.y.y.y = public ip

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094837.shtml

 

[burtsbees]

Not sure what you mean...you mean how to route between all the addresses?

Burt

 

[plshlpme]

you can use the other addresses via nat like brian mentioned.. or you can add them to your wan interface as secondary addresses.. either way since they are all in the same subnet youll have to nat to internal hosts.

 

[zinkann]

the ISP i work for provides one IP for the interface pointing towards us then a block of IP'S for the customer. ex: cisco router with two fast Ethernet int's....outside 192.168.1.100 inside 10.1.1.16 255.255.255.240. the customer would have up to 14 free IP's to use for anything.

 

[burtsbees]

Something tells me that he does not want to NAT, but to employ a DMX.

Burt

 

[burtsbees]

Oh my...hahaha...

DMZ, I mean...or a Flava Flav...lol

Burt

 

[crocks]

A couple of the IP addresses I will DMZ for Email & Web.
I maybe thinking using another for a Secondary VPN.

 

[burtsbees]

All IP addresses in the router can already route between themselves, as they are directly connected. Is this what you wanted to know?

Burt

 

[zinkann]

so did the ISP tell you to assign the interface connected to them with the 208.124.xxx.73? Seems like they would have given you a different IP for the interface facing them, then you would assign your interface 208.124.xxx.73 255.255.255.248. .73 being your gateway and having 5 ip's for your servers and VPN. What burt said is right. I may be wrong in your case, but this is how we do it.

 

[dtrtel]

Sounds like you are running un-numbered on your WAN interface provided it is Point-to-point. If so, you configure the .74 IP on your Inside ethernet (mask 255.255.255.248), default route to .73, then assign the remaining public IPs to hosts in your DMZ, including one for the firewall to your inside network.

If you can't run un-numbered on the WAN interface, you would set it up like brianms and plshlpme have already indicated.

--jeff

http://linkedin.com/in/JeffLynch