topic Re: Re: Loopback in Operating System - HP-UX

Re: Loopback

Habib_4 — Tue, 28 Mar 2006 10:33:47 GMT

Hi guys,

Just wondered, i am having difficulties logging into the CDE on an old Unix server I bought recently.
It just stays at the login prompt when I try to enter my u/name and pwd.
I was told this was because the IP address was set to the loopback address, and when I checked this that was the issue.
Anyone know how to resolve this?

Cheers

Habib

Re: Re: Loopback

Steven E. Protter — Tue, 28 Mar 2006 10:43:03 GMT

Shalom Habib,

The loopback address needs to be up and running and it is used for internal networking. If root sends an email it originates on localhost the loopback network.

I do not think setting the IP address of a NIC card to the loopback address is a good idea and agree it could be a problem.

ifconfig lan0

or lan whatever is active.

ifconfig can change the IP address to something legitimate.

It can also be changed by editing /etc/rc.config.d/netconf and restarting networking or the system.

SEP

Re: Re: Loopback

JASH_2 — Wed, 29 Mar 2006 02:41:24 GMT

Habib,

I know that it is not the "pure unix guys" way, but you can change the network cards ip address using SAM on the console.

Regards,

JASH

Re: Re: Loopback

Muthukumar_5 — Wed, 29 Mar 2006 02:46:59 GMT

loopback is used for local administration usage in that machine. You have to configure your network card with IP-Address for communicating from external. Configure with ifconfig . Or do it with SAM.

To get permanent effect then configure in /etc/rc.config.d/netconf on related with INTERFACE_* related variables.

--
Muthu

Re: Re: Loopback

Antonio Cardoso_1 — Wed, 29 Mar 2006 02:50:03 GMT

Check if hostname of your server is correctly resolved, this might also be an issue.
#getip
=> if /etc/resolv.conf is configured to a nameserver but your server is not resolved by DNS, you may need to add conf in nsswitch.conf to force use of FILES.
Example of nsswitch.conf contents:
hosts: files [NOTFOUND=continue] dns
or
hosts: dns [NOTFOUND=continue] files