RE: [newbie] DNS questions
Run a DNS server on your box and the problem is solved. urpmi bind bind-utils chkconfig --add named chkconfig --levels 2345 named on service named start change /etc/resolv.conf to: nameserver 127.0.0.1 HTH, Bill -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Frank Bax Sent: Wednesday, May 12, 2004 11:56 AM To: [EMAIL PROTECTED] Subject: Re: [newbie] DNS questions At 11:04 AM 5/11/04, Frank Bax wrote: At 09:56 AM 5/11/04, Anders Lind wrote: On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /etc/resolv.conf was different - change them all to match what our router has and all is well! But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Does no-one have a solution to this nameserver problem? My Linux machines went down again today - apparently my ISP (sympatico/bell) changed name servers and the ip addresses that worked yesterday don't work today! Frank Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
At 11:04 AM 5/11/04, Frank Bax wrote: At 09:56 AM 5/11/04, Anders Lind wrote: On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /etc/resolv.conf was different - change them all to match what our router has and all is well! But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Does no-one have a solution to this nameserver problem? My Linux machines went down again today - apparently my ISP (sympatico/bell) changed name servers and the ip addresses that worked yesterday don't work today! Frank Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
Frank Bax wrote: At 11:04 AM 5/11/04, Frank Bax wrote: At 09:56 AM 5/11/04, Anders Lind wrote: On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /etc/resolv.conf was different - change them all to match what our router has and all is well! But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Does no-one have a solution to this nameserver problem? My Linux machines went down again today - apparently my ISP (sympatico/bell) changed name servers and the ip addresses that worked yesterday don't work today! Frank Frank; You should check whether or not you can ping all the systems on your network first. ANY DNS server should work fine for the workstations if the router is managing your Internet connection to Bell. Assuming that your router is using an internal pppoe system to connect, it's the only one that needs Bell's DNS servers. Your PC's can use any other DNS servers that you can find. Try a Tier-1 ISP like MCI or Rogers, Shaw, or Videotron. You can get their DNS IP's by doing a Whois search on the Internet. If that doesn't get you the info you need, try www.dnstuff.net. They'll have the info for sure. Have a look at the results I got for Sympatico.ca. http://www.dnsstuff.com/tools/lookup.ch?name=sympatico.catype=A Use the new DNS addresses for your workstations only - not for the router! Let the router get it's DNS from Sympatico, so that if they ever change again, the router will acquire the new ones automatically. Also, consider using one of the PC's as a DHCP server. This will allow you to assign IP addresses to all 3 PC's by associating their MAC addresses to a specific IP address. That way, whether you're in Windows or Linux, each machine will always receive the exact same IP each time. make sure you turn off the DHCP server which is running on your router, but leave the DHCP client on the router alone! HTH Lanman Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
Frank Bax wrote: But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Frank Frank, What I usualy do is have the DHCP server give the Linux boxes a fixed IP address based on the MAC address of the NIC. That way, you can use DHCP on the all the machines on the network, but still have a statis IP for the Linux machines. Most routers I have seen will alow you to set up static IPs as well having a dynamic IP range for other machines. I usualy cheat in getting the MAC address for the machine by using normal DHCP setting for the first boot, and looking at the tables on the router to get the MAC address, and the using cut and past to put it in the static IP table. You can also use ifconfig to get/set the MAC address. The only time you have to change things is if you change the NIC in one of the Linux machines. Mikkel -- Do not meddle in the affairs of dragons, for you are crunchy and taste good with Ketchup! Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
Frank Bax wrote: At 11:04 AM 5/11/04, Frank Bax wrote: At 09:56 AM 5/11/04, Anders Lind wrote: On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /etc/resolv.conf was different - change them all to match what our router has and all is well! But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Does no-one have a solution to this nameserver problem? My Linux machines went down again today - apparently my ISP (sympatico/bell) changed name servers and the ip addresses that worked yesterday don't work today! Frank Hi Frank, Many routers (like mine) have a DNS cache, so you can point the linux boxes to nameserver 192.168.0.1 (or whatever IP your router has). I have a DNS entry that I put at the end of every resolv.conf, its 139.130.4.5 which is telstra's (australian telecom) open DNS server, any ISP can use it.. its handy as a fall back, perhaps you should find one similiar in your area.. -- rgds Franki Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /Anders Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
/etc/resolv.conf should tell you the story unless you are running your own nameserver on the linux machines. On Tue, 2004-05-11 at 23:51, Frank Bax wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank __ Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] DNS questions
At 09:56 AM 5/11/04, Anders Lind wrote: On Tue, 11 May 2004 09:51:18 -0400 Frank Bax [EMAIL PROTECTED] wrote: I have three Linux machines on the same network with a bunch of windows machines. The ip address of the server hosting corporate email changed last week, but the old ip address was only unplugged yesterday. Two of the linux machines are unable to download email and ping attempts to connect to the old ip address. reboot didn't help. Third linux machine and windows machines are working fine. Looks like a dns issue. What tools do I use to determine which nameserver Linux is using, what ip address that name server is providing for the server we are trying to reach? Frank Open /etc/resolv.conf as root with your favorite editor and you can also have a look in /etc/hosts so everything is the same on all three boxes /etc/resolv.conf was different - change them all to match what our router has and all is well! But more questions. We have a router with dsl modem here. I use dhcp for windows clients. I gave each linux machine a static ip so I can do remote admin. Is there a way to get the ip address of nameservers from the router, like what would happen with dhcp, but still have static addresses for the linux machines? Frank Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
