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Contribs.org Forums => General Discussion => Topic started by: Joeg1484 on May 17, 2010, 02:14:44 AM

Title: DNS Issue
Post by: Joeg1484 on May 17, 2010, 02:14:44 AM: Hello again :)

I was messing with my DNS settings today and wanted to migrate my network to use SME server to resolve hostnames, so I changed the router DHCP settings to point to my SME server for DNS resolution.

All is working, as I can ping outsite internet address, but for some reason, I can't ping .local address' from within my network.

If I do an nslookup from a client machine, it appears to have the information, but does not pass it though icmp or any other service.

From the Client:
Code: [Select]
nslookup joeman1.local Server: 192.168.0.55 Address: 192.168.0.55#53 Non-authoritative answer: Name: joeman1.local Address: 192.168.0.55
However:
Code: [Select]
ping joeman1.local ping: unknown host joeman1.local
From the server:
Code: [Select]
nslookup joeman1.local Server: 192.168.0.55 Address: 192.168.0.55#53 Non-authoritative answer: Name: joeman1.local Address: 192.168.0.55
Although:
Code: [Select]
ping joeman1.local PING joeman1.local (192.168.0.55) 56(84) bytes of data. 64 bytes from wolfserver.joeman1.local (192.168.0.55): icmp_seq=1 ttl=64 time=0.036 ms 64 bytes from wolfserver.joeman1.local (192.168.0.55): icmp_seq=2 ttl=64 time=0.060 ms

I am NO a DNS expert, but I think I have it all set up properly. Basically, I have domains and hostnames set up in server-manager correctly as I can tell.

This is a standalone server and DHCP is being provided from my Linksys router, but points to my SME server as its DNS choice for DHCP and my clients are receiving the information as noted in the /etc/resolv.conf from the clients.

Any thing else I can check or any additional information you need, please let me know.

BTW, I am using SME 8 Beta 5.

Thanks in advance!

Joe
Title: Re: DNS Issue
Post by: CharlieBrady on May 17, 2010, 04:46:29 AM: What is your client OS? If it is linux, what is the content of /etc/nsswitch.conf? Perhaps it is not using DNS for name resolution.
Title: Re: DNS Issue
Post by: Joeg1484 on May 18, 2010, 03:08:34 AM: Quote from: CharlieBrady on May 17, 2010, 04:46:29 AM
What is your client OS? If it is linux, what is the content of /etc/nsswitch.conf? Perhaps it is not using DNS for name resolution.

I am using Linux... Here is my nsswitch.conf file. Should I put dns before files?

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# /etc/nsswitch.conf # # Example configuration of GNU Name Service Switch functionality. # If you have the `glibc-doc-reference' and `info' packages installed, try: # `info libc "Name Service Switch"' for information about this file. passwd: compat group: compat shadow: compat hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis
Title: Re: DNS Issue
Post by: CharlieBrady on May 18, 2010, 04:09:07 AM: Quote from: Joeg1484 on May 18, 2010, 03:08:34 AM
I am using Linux... Here is my nsswitch.conf file. Should I put dns before files?

Before 'mdns4_minimal'. Or just use 'hosts dns'. Or change your domain from .local to something else.

https://bugs.launchpad.net/ubuntu/+bug/140663
Title: Re: DNS Issue
Post by: Joeg1484 on May 18, 2010, 04:18:39 AM: Quote from: CharlieBrady on May 18, 2010, 04:09:07 AM
Before 'mdns4_minimal'. Or just use 'hosts dns'. Or change your domain from .local to something else.

https://bugs.launchpad.net/ubuntu/+bug/140663

Awesome, thanks for that.

I change the line to read:
Code: [Select]
hosts: files dns
And now it works...

Thanks again!

Joe
Title: Re: DNS Issue (.local hostnames)
Post by: CharlieBrady on June 03, 2010, 05:44:25 PM: If no-one has done so already, I suggest that an entry be added to the FAQ about this (Ubuntu client configuration) issue.
Title: Re: DNS Issue
Post by: timn on June 03, 2010, 06:13:34 PM: The existing wiki Howto's for Debian, Fedora and Ubuntu Authentication already state this, for example:

http://wiki.contribs.org/Client_Authentication:Ubuntu#Authentication_Modifications (http://wiki.contribs.org/Client_Authentication:Ubuntu#Authentication_Modifications)