network setup

hello

i am trying to recreate a network setup but do not have a networking background and would appreciate some help.

the current configuration is:

internet > router > Security gateway > server (acting as dhcp server)

they have a fixed public ip address range

internet is up and running but when i check the public ip address of the server it is not one of the ones within our range.

am i right in thinking that i need to set a fixed public ip address for the security gateway as my isp has said that i can not set i fixed public ip address for their router?

any help advice or further questions would be greatly appreciated
drzackzussAsked:
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Sikhumbuzo NtsadaIT AdministrationCommented:
The setup you have there is pretty decent, basically, the router (Cisco routers are the best) will be configured to your ISP with the fixed IP address provided.

What do you mean when you say the the IP address is defferent? did you use something like "whatismyip" from google?

Anyway, with the help of service providers like "MYDNS.com" you should be able to see where your IP address points to.
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drzackzussAuthor Commented:
hello

thank you

does it seem normal in this setup to give the security gateway a static public ip address or should you give the router a static public ip address?

or does it not matter

as when the old router (lost username and password) is connected we get a static public ip address with which to forward mail to from host but the new router seems to get a dynamic public ip address
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drzackzussAuthor Commented:
is it even possible to set a static public ip address on a router as my isp has told me that the option is disabled on the router they have sent me.
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Sikhumbuzo NtsadaIT AdministrationCommented:
Yes you setup your public IP address on your router
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drzackzussAuthor Commented:
ok so set up

internet > Router (set public ip address from isp as public ip address of router) > security gateway (open ports for owa, smtp etc to forward to server) > server (acting as dhcp server)

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Sikhumbuzo NtsadaIT AdministrationCommented:
That is correct
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drzackzussAuthor Commented:
hello

in the end i had to set it up this way

internet > router > gateway (with public ip) > server
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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