Static IP routing

Hiya all,

I hope this is the correct place for this question. If not, a polite message will suffice.

My ISP, TalkTalk, has provided me with four static public IP addresses. I have a four port router. I would like to route each public IP to a specific port on my router.

EDIT:
My current router is a HUAWEI - HG533, I'd prefer a NetGear or DLink.

Is this possible?
Do I need a router with specific capabilities? If so, what capabilities do I need?
Can anyone recommend a router that can do this?
If no router is available, that can perform this function, would something like DD-WRT, router firmware, or IPCop, PC based router/packet filter, be able to do this?

Best regards
David

Edited by deleted (Sat 16-Apr-16 17:57:22)

If you have a VLAN capable router you can send a specific IP to a specific physical socket, but that is not what people usually want.

What most people want is just the ability for the device connected to a specific port to run in a NON mode, i.e. support routed IP Even the older Netgear routers would do this when you simply turn off the NAT part and it was then down to you configure the IP addresses for the attached devices.

The biggest question is what sort of Internet service do you have? ADSL or FTTC/VDSL2 as the modem will issue will be important.

Thank you for your reply.
My service is ADSL.

What I want to do is have four internal networks, each with a different external IP address.
Why do I want to do this?
I'm playing with/experimenting with/learning about computer networking and I just wanted to try it.

BR
David

So any of the old Netgear DG834 range and newer with a built in ADSL2+ modem will suffice.

They all support routed IP, you don't allocate the IP per physical LAN port, but rather what ever device is connected to the port says which IP address it wants to use.

Hiya,

Are you saying that if I have a PC connected to a port, the PC decides which external IP address to use?
How does the PC decide? Can this be forced?

BR
David

Not necessarily a PC but something that understands IPv4 and allows you to specify the static IP address you want to use on that device. Essentially you are setting it manually by hand.

I'd recommend researching how to manually setup a static IP address on your devices before even playing with configuring the router. Otherwise you will end up locking yourself out

I'm sorry, I think you misunderstand my question.
I know how to set up internal static IP addresses. That is not what I want.

Let me give you an example. Lets say my external IP addresses are 100.100.100.1 to 100.100.100.4, obviously not my real external addresses but good enough for an example.

With a single external IP address, when a packet leaves my network the source address will be my external address.

I have four external IP addresses, I want to be able to decide which external IP address is used for each internal port.

Devices connected to port one have the external IP address 100.100.100.1
Devices connected to port two have the external IP address 100.100.100.2
Devices connected to port three have the external IP address 100.100.100.3
Devices connected to port four have the external IP address 100.100.100.4

I hope that makes sense.

BR
David

OK, an update. I found this:

Multiple public IP adresses

This looks like what I need.

I will keep you updated on progress, will be slow due to lack of time .

Thank you for your help.

BR
David

You need four routers since only one device can have 1 IP address, the routers would then use NAT to allow multiple devices to share the single IP address.

You are leaning well away from consumer grade kit and more into the self-built ubunto router or a Cisco device, and should read up on IP Routing and VLAN's from one of the many networking books.

Hiya

You are leaning well away from consumer grade kit and more into the self-built Ubunto router or a Cisco device.

I thought I might be.
I will still look into DD-WRT, as this appears to provide what I want.

Thank you for your time and help, much appreciated.

BR
David