[Gllug] Public IPs - When are they appropriate

[Xander D Harkness]

I was speaking to a network engineer from Ernst and Young yesterday who
advised me that every computer they have is on a public IP.  This
obviously includes mail and we servers, but also every laptop and
desktop machine.

He said that that this was to aid communication throughout sites and to
ensure that there would be no problem with people moving between sites.

As far as I can see there is nothing here that should be done using VPNs
between sites and a good DHCP set up.

In addition I thought one of the reasons to use private IPs is that they
are not normally routed by routers, hence there is less chance of
hacking or leaking data onto the internet.

EY keep their machines behind firewalls and the laptops pretty well
locked down.

Is this not a huge waste of public IP address and money, not to mention
a security risk.  Or am I missing something?

Cheers
Xander




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