bwsaul
asked on
Domain name service - Need help
I need help. Our network has become inaccessible by telnet and we are also having difficulty sending out email. The symptoms follow a pattern shown when on May 18 of this year when 'DNS was hosed' according to our system administrator.
Well, he is on vacation and folks are going to ask me to 'unhose DNS'. Can someone give me some advice on how to discern what is wrong and how to put the network back in order if it is indeed the Domain name service.
Thanks.
Well, he is on vacation and folks are going to ask me to 'unhose DNS'. Can someone give me some advice on how to discern what is wrong and how to put the network back in order if it is indeed the Domain name service.
Thanks.
Insert 6 sticks of dynamite inside case. Take match and light. Please leave room. =]
ASKER
The problem seems to be with getting a sunos 4.1.3 machine to properly run an in.named daemon. I killed the old process and invoked a new daemon. But this does not seem to have solved the problem.
Blowing up the system is not an option(Gee thanks, Kellyj).
Blowing up the system is not an option(Gee thanks, Kellyj).
ahhh man, you mean I don't get the points??!!?? hehehehe. I hope someone knows how to fix this.
If DNS is your problem, you need to disable (kill named) on any host, not only the server(s). Then you must reinstall your /etc/{hosts,networks} on all those hosts (if your admin left these files as they were befor starting DNS, you're lucky)
what are the symptoms? can u use nslookup from the servers and hosts to see if the right info is going out, and check the settings on the servers (yeah, vague, i know, but u can use it to connect to name servers and get all kinds of info. you know, nslookup, then set type=NS, ., and so on.)
Let's get some more details.
1. What OS are you running on all the affected machines?
2. Are you using NIS? If so, has it been configured to roll
unasnwered queries from NIS over to DNS?
3. Are you on a subnet? Behind a firewall?
4. Can you verify that your network is routing correctly?
(In other words, if you supply IP addresses to applications
such as ping and telnet, do they work?)
5. What DNS server software are you using? What version?
6. Are you able to reach hosts external to your network
by IP? by hostname?
1. What OS are you running on all the affected machines?
2. Are you using NIS? If so, has it been configured to roll
unasnwered queries from NIS over to DNS?
3. Are you on a subnet? Behind a firewall?
4. Can you verify that your network is routing correctly?
(In other words, if you supply IP addresses to applications
such as ping and telnet, do they work?)
5. What DNS server software are you using? What version?
6. Are you able to reach hosts external to your network
by IP? by hostname?
bwsaul:
What is the IP address of your DNS server?
What is your company's domain name?
I will look at your DNS records (using nslookup and DNS_Boss) to help you troubleshoot the problems. Also, before I check out your system, I need to be sure that you are running BIND (in.named) [command: ps -ef | grep named] on your server and if so, which version. Secondly, I need to know if your DNS server is behind a firewall. This is usually NOT the case, but could greatly affect the DNS zone transfers.
What OS are the clients running? MacOS, UNIX, NT, WFW3.11, etc.?
Can you ping an IP address from a client workstation?
Can you ping a hostname address from a client workstation?
Is the problem isolated to certain workstations on the LAN or is it a widespread problem?
Please let me know these answers so that we can get this resolved.
Regards,
David (a.k.a turnkey)
What is the IP address of your DNS server?
What is your company's domain name?
I will look at your DNS records (using nslookup and DNS_Boss) to help you troubleshoot the problems. Also, before I check out your system, I need to be sure that you are running BIND (in.named) [command: ps -ef | grep named] on your server and if so, which version. Secondly, I need to know if your DNS server is behind a firewall. This is usually NOT the case, but could greatly affect the DNS zone transfers.
What OS are the clients running? MacOS, UNIX, NT, WFW3.11, etc.?
Can you ping an IP address from a client workstation?
Can you ping a hostname address from a client workstation?
Is the problem isolated to certain workstations on the LAN or is it a widespread problem?
Please let me know these answers so that we can get this resolved.
Regards,
David (a.k.a turnkey)
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