NAT or non NAT, that is the question

[Rincewind]

i'm changing to a different ISP, demon to be precise and they've given me the option of NAT or non NAT, which should i go with? i've only got a basic idea of what it means but i know it can mess up outlook etc... any help?
thanks.

 

[Psyk]

non-NAT. I suppose NAT could be a bit safer but some things might not work that well.

 

[dalepearson]

Dont really need NAT at the ISP end, just enable NAT on your local router.
If your going to only use a modem however you might want NAT enabled at your ISP.

 

[Phemo]

If you don't know what it means, you don't need it.

Do you need a single Internet IP or multiple? The NAT option will give you one Internet IP with which you can just plug in a router and have NAT handled on that, so you can have multiple PCs working behind that single IP no problems.

The no-NAT option will give you an 8 IP block which will provide 5 usable IPs so you can assign these to different PCs. The chances are that you don't really need to do this unless you want to have, say, servers on their own external IP address or something.