Re: Can't Login when Nameserver is Down?

Carl Rigney ((no email))
Thu, 24 Oct 1996 18:56:48 -0700 (PDT)

> Recently our nameserver machine has started acting flaky. Quits
> resolving some names like my 2nd Portmaster pm2, but still resolves the
> first pm1, but anyway when he starts acting this way none of the users
> can login, all users are on a seperate machine using radius.

RADIUS 1.16 looks up the PortMaster's hostname in order to authenticate it
from the /etc/raddb/clients file. No name lookup, no RADIUS authentication.

Our RADIUS server 2.0 caches the client IP addresses so that it only
has to look them up when the clients file changes, which should make this
less of a problem. (It does mean that with RADIUS 2.0 that if you change
a PortMaster's IP address in DNS you should touch your /etc/raddb/clients
file to let RADIUS know it needs to refresh the cache.)

RADIUS 2.0 is available in binary form starting today; see
http://www.livingston.com/ and click What's New for all the details.

--
Carl Rigney
cdr@livingston.com