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DSL w/ 3 subnets & 3 public addresses

By don ·
I have three doctors' offices wanting to share a single DSL connection (all located in same building). I want to put a firewall between DSL router and the three subnets. Also, each office needs one public ip address and the current DSL router onlyallows one.

Suggestions for best products and configuration? $$ is not necessarily an issue.

Thanks, Don

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DSL w/ 3 subnets & 3 public addresses

by eBob In reply to DSL w/ 3 subnets & 3 pu ...

There are a couple of ways to go.

1 - DSL --> DSL "Modem" --> DSL Router --> Firewall (Cisco PIX 515) --> LAN Router*

* 4 Ethernet ports, one to each Dr. office, one to the firewall. Establish Gateway of Last Resort for each Dr. office as the PIX. Suggestion: Cisco 2611 with extra Dual Ethernet module

2 - DSL --> NEW Router**

**with 3 Ethernet interfaces (one for each Dr. office), DSL WAN Interface (replaces DSL modem), plus IOS Firewall Feature Set (DO NOT RELY ON ACCESS LISTS). Suggestion: Cisco 2610

Question: Why does each office need their own public IP address? If actually required, this is something you will need to take up with the DSL provider.

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DSL w/ 3 subnets & 3 public addresses

by don In reply to DSL w/ 3 subnets & 3 pu ...

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DSL w/ 3 subnets & 3 public addresses

by don In reply to DSL w/ 3 subnets & 3 pu ...

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