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DSL with 5 IPs - How to setup

By dinhquocvu ·
Hi guys,
I wonder if somebody could jump in and help me here. I have acquired a DSL line with 5 static IP addresses. Now, I would like to set up my network so that each computer ultilizes 1 static IP. Here is what I got:
Currently, I ran all 5 of my computers through a router. The router was configured with a WAN IP (from my DSL provider - that's 1 IP address). Then the router acted as a DHCP server for my network, distributing LAN IPs (such as 192.168.1.100, etc.) to the 5 computers. Therefore the outside can't see my computer. Now, if I forward each request from the internet to each 192.168.1.x computer (i.e. HTTP web to 192.168.1.100 port 80, ftp to 192.168.1.101 port 21, etc.), the outside internet can only see the 1 WAN IP that isset up for the router. The other 4 are untouched at this moment.
I also have some hubs available. With all of my equipments, how do I set up my network to run all 5 IPs? Please jump in. Thanks a lot.

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DSL with 5 IPs - How to setup

by Raffi_ In reply to DSL with 5 IPs - How to s ...

You are inviting trouble just to implement all of those IP's. I would just put them on a shelf. Sounds like your router is doing NAT and that is a good security measure to have in place.

Bottom line question is "What do you hope to gain by usingall 5 of those IP's"?

Regards
Raffi_

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DSL with 5 IPs - How to setup

by dinhquocvu In reply to DSL with 5 IPs - How to s ...

I want to host 3 of my web sites, each having its own IPs. That's why I need to set up those IPs.

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DSL with 5 IPs - How to setup

by goonman In reply to DSL with 5 IPs - How to s ...

D,
I just went thru the exact situation with my local DSL provider. Your DSL provider gave you 1 WAN ip addr and then the router created 5 LAN ip addr What you need is 5 WAN ip addr from the DSL provider if you want 3 different web site. That'swhat our DSL provider said. I've recently configured a DSL modem line(at a company) and a Linksys DSL router/hub that connected 8 pcs so they can all use the internet the cheap way. The DSL router acted like a DHCP server (which is configurable)and gave 8 ip address. I haven't done any extensive research on creating 3 different website with 1 WAN ip addr yet. Think about this. Your only web access is thru the DSL line(1 IP addr). If
you have 3 websites or server with different ip address internally, how can I ping those 3 different servers from the outside? Every point of access goes thru the SAME DSL ip addr. Try asking your DSL support tech or checkout the specs on the DSL router/hub.

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DSL with 5 IPs - How to setup

by dinhquocvu In reply to DSL with 5 IPs - How to s ...

Guys,
The below works for me:
1. DSL modem to HUB (got to use crossover CAT5 cable, normal CAT5 won't work)
2. HUB to ROUTER
3. 4 of my computers go directly to the HUB, each with its own IP address provided from the DSL provider as wellas using the DSL provider DNS servers and Gateway.
4. My private network computers are on the ROUTER. The ROUTER is configured with the remaining 5th IP provided address provided by the DSL provider.

Now I think I will have to use software firewall for the 4 computers on the HUB since they did not go through the ROUTER.

Once again, thanks for your valuable input, Raffi and User_Deleted. Have a great time.

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DSL with 5 IPs - How to setup

by Raffi_ In reply to DSL with 5 IPs - How to s ...

You do not mention what kind of router you are using. Some can deal with more than 1 WAN interface. Please advise.

I'll assume that your's cannot.

- Connect the DSL modem directly to a hub.
- Connect the Router to the hub.
- Connect each webserver to the hub.
- connect each computer that you want private to the router.

There are some limitations:

If you want to communicate with the web servers from the private computers you will have to install a 2nd NIC in the web servers and then connect those to the router. Or just junk the router and give all machines a public IP. It sounds like your router is only doing routing between one WAN interface and 1 internal LAN.

Your web servers are exposed to the net with no protection. You should get a firewall in there and make sure that you stay current on all of the security patches.

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DSL with 5 IPs - How to setup

by dinhquocvu In reply to DSL with 5 IPs - How to s ...

Guys,
The below works for me:
1. DSL modem to HUB (got to use crossover CAT5 cable, normal CAT5 won't work)
2. HUB to ROUTER
3. 4 of my computers go directly to the HUB, each with its own IP address provided from the DSL provider as wellas using the DSL provider DNS servers and Gateway.
4. My private network computers are on the ROUTER. The ROUTER is configured with the remaining 5th IP provided address provided by the DSL provider.

Now I think I will have to use software firewall for the 4 computers on the HUB since they did not go through the ROUTER.

Once again, thanks for your valuable input, Raffi and User_Deleted. Have a great time.

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DSL with 5 IPs - How to setup

by dinhquocvu In reply to DSL with 5 IPs - How to s ...

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