Name resolution is only working from server side. Clients cannot resolve host names.

Operating Systems Linux Red Hat Name resolution is only working from server side. Clients cannot resolve host names.

11-11-2012

Registered User

8, 0

Join Date: Jul 2011

Last Activity: 4 December 2012, 2:15 PM EST

Posts: 8

Thanks Given: 4

Thanked 0 Times in 0 Posts

Hi Everyone,

I have resolved the issue as far as DNS is concerned. I turned off the iptables by running command "service iptables stop" ... and there it was .. all clients started pinging the hostname of DNS Server. So looks like there is some issue with iptables configuration. Unfortunately I am not very good at iptables so will research more into that and will start a new thread if required. Thanks all for your ideas and contributions.

dbadmin100

View Public Profile for dbadmin100

Find all posts by dbadmin100

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Linux

My server can't resolve domains?

I am on a VPS that is pretty much unmanaged so it means im on my own. I did my best to configure it so i can host my own site for other people to see it online but seems like i have network problems because in the last days many of my users report they cant enter my site from my domain and...

2. Programming

Clients - Server ( UDP )

Hello, I have a question: I want to create a n client to one server connection. This is the client-server algorithm. Enybody help to make the changes?

3. UNIX for Advanced & Expert Users

host file : same ip with different names

Dear Unix experts My application runs on Linux. The host file has the same ip address in two differnt lines but with different names. For example 10.114.45.14 prod.xyz.com prodx 10.114.45.14 prod-int.xyz.com prodx-int Could you please let me know if it is right? What is the...

4. IP Networking

How to host apps for thin-clients for cheap on a home network?

Hello, I am planning to build a HP Proliant DL380 server w/ Debian. I would like to connect 6 or 8 thin clients (or zero-clients) to this server and host the applications for the thin clients. The thin-clients are all wireless LAN. All data created by users on the thin clients saved on the...

5. Web Development

Cannot access Apache web server from Wan side, only Lan side.

I have installed WAMPSERVER 2.0 on my windows vista x64 system but still am having issues with getting the webserver to be seen outside my local network. It is working fine within my local network. Been through several setup tutorials so far, no dice still. For testing purposes I have...

6. Linux

resolve one IP on DNS server

Hi! I have a dns server (bind) with 2 zones forward and reverse and i need to resolve one ip completely different. I have add to /etc/hosts and i can ping but i can't do nslookup. I've tried to add the dns server responsible to resolve that ip on /etc/resolv.conf without success. So how can i...

7. UNIX for Advanced & Expert Users

SUSE 9 and 10 NIS clients with RedHat 8.0 NIS server not working

We have a RedHat 8.0 NIS master, with a RedHat 8.0 NIS Slave. We also have a small number of SUSE 9.1 and SUSE 10 machines here for evaluation. However, no matter what i do, the SUSE machines will not talk to the NIS Servers. If i broadcast for NIS Servers for the specified NIS domain, it...

8. UNIX for Advanced & Expert Users

host alias not working: host not found

Hello, I am working on HP-UX , and in the /etc/hosts file we have setup an alias: aa.bb.cc.dd devmach2.unix.org devmach2 devma2v The alias devma2v does not work. Error when pinging devma2v ping: unknown host devma2v For devmach2 the ping works fine , returning the correct IP...

9. Shell Programming and Scripting

Server side scripting

I have my webpage hosted on one unix server, and using the command  it calls the appropriate script to tell me how many people are on the unix server at that time. I need to be able to find out how many users are on another unix server without logging in but using the...

10. IP Networking

Cannot Resolve Host Name

I am running LexMark MarkNetPro-3 print servers on my AIX network. All of the sudden, none of my printers will print anymore. I am getting an error message on the console: Unable to resolve host name. This message comes up everytime a user submits a print job. Any Ideas?

LEARN ABOUT MINIX

rarpd

RARPD(8)						      System Manager's Manual							  RARPD(8)

NAME

       rarpd - reverse address resolution protocol daemon

SYNOPSIS

       rarpd [-d]

DESCRIPTION

       Rarpd listens on the ethernet for broadcast packets asking for reverse address resolution.  These packets are sent by hosts at boot time to
       find out their IP address.  Rarpd looks up the six octet ethernet number in the /etc/ethers file finding a host name.  This name is  trans-
       lated to the IP address of the host by a DNS lookup.  The IP address is then sent to the host.

       Before  rarpd can start its service it first finds out what the IP addresses of the ethernets are.  It will look through /etc/ethers to map
       the ethernet addresses to host names.  It then uses /etc/hosts to map the host names to IP addresses.  If this lookup  fails  then  several
       RARP  requests  are broadcasted in the hope that some RARP server knows the addresses.  The IP addresses are eventually set in the same way
       as ifconfig(8).	(The address is not changed if already set with ifconfig.)  Note that the host names in the ethers and	hosts  files  must
       match exactly.  The DNS can not be used yet, so a simple name can't be translated to a fully qualified name.

       Rarpd exits after startup if there are no active ethernets, or if there is no ethers file.

       Warning!  Sun diskless workstations assume that the first RARP server that answers is the host they are to boot from.  For this to work all
       other Sun RARP servers delay their answer if they are not also the requestors boot server.  The Minix rarpd does not have this kludge so it
       will  happily  engage the Sun boot server to see who can answer the client first.  Unless your Minix host can actually serve a Sun diskless
       client, it is better not to list any more hosts in the ethers file than necessary.

OPTIONS

       -d     Turns on debugging messages.  Debugging can also be turned on at runtime by sending signal SIGUSR1 or turned off with SIGUSR2.

SEE ALSO

       ifconfig(8), ethers(5), hosts(5), set_net_default(8), boot(8), inetd(8), irdpd(8), nonamed(8).

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																	  RARPD(8)

Red Hat