Better IP filtering

[Russ]

Currently with the IP filter there is no way to tell what IP is for what purpose/person, it is just a big ugly list.
This makes it near impossible to manage unless you maintain a separate list of the IP's and who they belong to.
So giving an IP temp access or trying to remove access later is a royal PITA.

It would be more useful if each IP could have a label with it to identify what it is for. So have it in a MULTIPLE SELECT list rather than a text area so IP's can easily be selected and removed
e.g.
1.2.3.4 - ACME.com temp access for support
2.3.4.5 - Head office
3.4.5.6 - Dave - Contractor

It would also be very handy if IP filters could have rules.

e.g.
Allow Indefinitely
Allow for x days then disable
Allow for x days then remove

[Kurt McKee]

Triage suggestion

Part of this feature request is asking for IP filter expiration support. This is similar to #2884, which is a request for account expiration support.