OliverWood
Technical User
I'm looking for a network device that can perform the following tasks:
I currently have a cisco 1721 with 3 ethernet ports (builtin one plus two wics) – maybe it could be done with this ?
Translate 6 fixed ip addresses residing (inside) on two different subnets into a block of 6 different fixed ip addresses (outside) on another subnet altogether. Here ouside contracts inside
Also Allow 2 devices on inside subnets (each device sits on both internal subnets - redundancy) to contact two outside devices, but reference them using an address that is in keeping with the internal subnets.
A sort of address translation task, but one-one, rather than the many-to-one NAT that I'm aware of.
I have done a sketch of the layout to show how it is all connected.
Also need to perform some basic firewall tasks - restricting ports & traffic etc.
Before anyone asks what am I trying to achieve - its an industrial application with redundant ethernet that I need to make visible to another WAN. I can't
change the IP addresses at my end, and they can't change theirs.
See PDF sketch on link:
Posted: Today at 4:06 pm Post subject: Here is a sketch and a description
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D1 and D2 (D2 is D1's backup so only one requests data at anyone time) need to access F2 and F1.
Servers dialing in on the ISDN router need access to F2, F3 and A1, A2, A3, A4, A5 ,A6
The A's do not need access to F2 or F3, but do need to talk to servers at the other end of the ISDN WAN.
Any pointers?
~Olly
I currently have a cisco 1721 with 3 ethernet ports (builtin one plus two wics) – maybe it could be done with this ?
Translate 6 fixed ip addresses residing (inside) on two different subnets into a block of 6 different fixed ip addresses (outside) on another subnet altogether. Here ouside contracts inside
Also Allow 2 devices on inside subnets (each device sits on both internal subnets - redundancy) to contact two outside devices, but reference them using an address that is in keeping with the internal subnets.
A sort of address translation task, but one-one, rather than the many-to-one NAT that I'm aware of.
I have done a sketch of the layout to show how it is all connected.
Also need to perform some basic firewall tasks - restricting ports & traffic etc.
Before anyone asks what am I trying to achieve - its an industrial application with redundant ethernet that I need to make visible to another WAN. I can't
change the IP addresses at my end, and they can't change theirs.
See PDF sketch on link:
Posted: Today at 4:06 pm Post subject: Here is a sketch and a description
--------------------------------------------------------------------------------
D1 and D2 (D2 is D1's backup so only one requests data at anyone time) need to access F2 and F1.
Servers dialing in on the ISDN router need access to F2, F3 and A1, A2, A3, A4, A5 ,A6
The A's do not need access to F2 or F3, but do need to talk to servers at the other end of the ISDN WAN.
Any pointers?
~Olly
