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10.08.2008 at 05:57AM PDT, ID: 23797041
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8.6

How do we use multiple ISP IP addresses with only one port on the incoming device?

Asked by wega1985 in Enterprise Firewalls, Network Routers, Networking Hardware Firewalls

Tags: , , ,

We have been getting along fine by using the first IP address in the ISP-provided block with NAT and port forwarding.  Now, we are about to add a conferencing application and we'd like to use one of the other IPs provided by the ISP.

We are using a Juniper Netscreen SSG140 as the firewall, which has multiple interfaces.  There is only, however, one interface on the device from which the Internet connection originates (Cisco IAD).

What is the best way to go about using one of the other IP addresses?  If another routing technique is recommended using the primary IP, I am fine with that.  Our goal is to have external customers connect to conference.ourdomain.com.  I am not sure if that will reside on port 80, which is why I wanted to try to separate it from the primary IP address which already utilizes that port.

IP address block
x.x.x.249
x.x.x.250
x.x.x.251
x.x.x.252
x.x.x.253
x.x.x.254

Netmask:  255.255.255.248
First IP is Gateway, x.x.x.250 currently in use.

Thanks in advance!Start Free Trial
[+][-]10.08.2008 at 11:08AM PDT, ID: 22671477

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[+][-]10.08.2008 at 11:33AM PDT, ID: 22671730

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[+][-]10.08.2008 at 11:44AM PDT, ID: 22671839

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[+][-]10.08.2008 at 01:06PM PDT, ID: 22672770

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[+][-]10.08.2008 at 09:09PM PDT, ID: 22675621

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[+][-]10.09.2008 at 05:54AM PDT, ID: 22677796

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[+][-]10.09.2008 at 06:02AM PDT, ID: 22677868

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[+][-]10.10.2008 at 09:40AM PDT, ID: 22688378

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About this solution

Zones: Enterprise Firewalls, Network Routers, Networking Hardware Firewalls
Tags: Juniper, Netscreen, SSG140, Firewall, ISP, VIP, NAT
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Solution Provided By: iw0k
Participating Experts: 3
Solution Grade: A
 
 
 
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