Re: (fqdn) hostname resolution when using DHCP
Phil Brutsche writes: > Samba won't necessarily work if you don't have the hostname pointing to > the IP in /etc/hosts. Are you saying that samba will may not work if you have both lines, like this? 127.0.0.1 hasler.dhh hasler localhost 192.168.1.1 hasler.dhh hasler If so, that is a bug in samba. -- John Hasler [EMAIL PROTECTED] (John Hasler) Dancing Horse Hill Elmwood, WI
Re: (fqdn) hostname resolution when using DHCP
On Fri, 31 Dec 1999, Salman Ahmed wrote: ssahme >Could this be a case of the DHCP server treating Windows clients ssahme >differently than non-Windows clients ? Majority of the DHCP clients at ssahme >our place are Windoze boxes. yes, if they are pointed at different DNS then anything is possible. you may be able to override the DHCP client on the linux side from using the DNS the DHCP server assigns it, if you wanted, i have never tried it though. nate [mailto:[EMAIL PROTECTED] ]-- Vice President Network Operations http://www.firetrail.com/ Firetrail Internet Services Limited http://www.aphroland.org/ Everett, WA 425-348-7336http://www.linuxpowered.net/ Powered By:http://comedy.aphroland.org/ Debian 2.1 Linux 2.0.36 SMPhttp://yahoo.aphroland.org/ -[mailto:[EMAIL PROTECTED] ]-- 1:08pm up 134 days, 1:03, 3 users, load average: 1.62, 1.83, 1.80
Re: (fqdn) hostname resolution when using DHCP
A long time ago, in a galaxy far, far way, someone said... > Salman Ahmed writes: > > What should I add to this file so I can ping from the machine itself by > > giving its fqdn hostname ? > > 127.0.0.1 matrix. matrix localhost. > > With this line any process on the machine can reach the machine itself via > the fqdn, the hostname, or just 'localhost'. True. > Phil Brutsche writes: > > Having matrix mapped to 127.0.0.1 in /etc/hosts isn't a good thing. > > Why? > > > It should look like this: > > 192.168.9.31 matrix. matrix > > What use is such a line other than for reverse lookups? Samba won't necessarily work if you don't have the hostname pointing to the IP in /etc/hosts. Admittedly if you don't use Samba then either method will work. -- -- Phil Brutsche [EMAIL PROTECTED] "There are two things that are infinite; Human stupidity and the universe. And I'm not sure about the universe." - Albert Einstein
Re: (fqdn) hostname resolution when using DHCP
Salman Ahmed writes: > But the second line in /etc/hosts will have to be updated/modified > whenever the DHCP lease for that IP address runs out. If you have a proper localhost line in /etc/hosts you don't actually need the IP of your interface in there at all. -- John Hasler [EMAIL PROTECTED] (John Hasler) Dancing Horse Hill Elmwood, WI
Re: (fqdn) hostname resolution when using DHCP
Salman Ahmed writes: > What should I add to this file so I can ping from the machine itself by > giving its fqdn hostname ? 127.0.0.1 matrix. matrix localhost. With this line any process on the machine can reach the machine itself via the fqdn, the hostname, or just 'localhost'. Phil Brutsche writes: > Having matrix mapped to 127.0.0.1 in /etc/hosts isn't a good thing. Why? > It should look like this: > 192.168.9.31 matrix. matrix What use is such a line other than for reverse lookups? -- John Hasler [EMAIL PROTECTED] (John Hasler) Dancing Horse Hill Elmwood, WI
Re: (fqdn) hostname resolution when using DHCP
On Thu, 30 Dec 1999, Salman Ahmed wrote: ssahme > ssahme >Whenever I try to ping this machine (from itself) by giving the ssahme >fqdn hostname, I get an error message like: ssahme > ssahme > unknown host matrix.domain.com ssahme > ssahme >nslookup on that fqdn hostname gives an error message saying that the ssahme >specified domain doesn't exist. make sure that the windows box and the linux box are pointed at the same DNS. that is if the windows box is using DNS. nate [mailto:[EMAIL PROTECTED] ]-- Vice President Network Operations http://www.firetrail.com/ Firetrail Internet Services Limited http://www.aphroland.org/ Everett, WA 425-348-7336http://www.linuxpowered.net/ Powered By:http://comedy.aphroland.org/ Debian 2.1 Linux 2.0.36 SMPhttp://yahoo.aphroland.org/ -[mailto:[EMAIL PROTECTED] ]-- 7:19pm up 133 days, 7:13, 3 users, load average: 1.58, 1.60, 1.55
Re: (fqdn) hostname resolution when using DHCP
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Re: (fqdn) hostname resolution when using DHCP
A long time ago, in a galaxy far, far way, someone said... [...] > Some more questions: I seem to be getting the same IP address through > DHCP. That's the way it works - each time you reboot you get the same IP until the lease time runs out. > After the DNS config update, I can ping this machine by using its fqdn > hostname from a windows box. But from the machine itself, I can't ping > the fqdn hostname. > > The /etc/hosts file for this machine is: > > 127.0.0.1 matrix localhost > > What should I add to this file so I can ping from the machine itself by > giving its fqdn hostname ? I always get 192.168.9.31 as my IP address > for this box via DHCP. Having matrix mapped to 127.0.0.1 in /etc/hosts isn't a good thing. It should look like this: 127.0.0.1 localhost 192.168.9.31 matrix. matrix You should also check that /etc/resolv.conf is set correctly. > Also, is there any curses-based tool to configure network settings for a > Debian box ? Not that I know of. Would a set of shell scripts help? It'd be a good start for a curses-based tool. -- -- Phil Brutsche [EMAIL PROTECTED] "There are two things that are infinite; Human stupidity and the universe. And I'm not sure about the universe." - Albert Einstein
Re: (fqdn) hostname resolution when using DHCP
On Thu, 30 Dec 1999, Salman Ahmed wrote: ssahme >I got one of the network admins to update their DNS config so that the ssahme >hostname of the machine is mapped to the machine's ethernet address. ok ssahme >Some more questions: I seem to be getting the same IP address through ssahme >DHCP. After the DNS config update, I can ping this machine by using its ssahme >fqdn hostname from a windows box. But from the machine itself, I can't ssahme >ping the fqdn hostname. sounds as if the dns config on the linux box is not right? check /etc/resolv.conf, and show the error it gives you whenever possible. ssahme >The /etc/hosts file for this machine is: ssahme > ssahme > 127.0.0.1 matrix localhost ssahme > ssahme >What should I add to this file so I can ping from the machine itself by ssahme >giving its fqdn hostname ? I always get 192.168.9.31 as my IP address ssahme >for this box via DHCP. /etc/hosts and DNS are quite different. /etc/hosts can give one response(the one that is hard coded into the file) while DNS can give something totally different. Make sure the DNS config is set right on the linux box. For my home network i recently added a fake domain 'aphro' (no .com .net .org or any of that) and just started assigning my internal ip addresses to it: Server: localhost Address: 127.0.0.1 Name:mail.aphro Address: 10.10.10.1 Server: localhost Address: 127.0.0.1 Name:linuxoutpost.aphro Address: 10.10.10.2 if you dont have a real domain for that internal network, you can make one like i have for mine. or, you could add a line to /etc/hosts that looks like: 192.168.9.31 hostname.domainname check /etc/host.conf as well, the line that has 'order' on it tells the system where to look first to try to get an ip from a name (hosts,bind is default i believe) ssahme >Also, is there any curses-based tool to configure network settings for a ssahme >Debian box ? i cant reccomend anything since i have never tried any such tools under debian. maybe you can find something at: http://www.freshmeat.net/appindex/console/administration.html ssahme >Thanks. sure, glad to help nate [mailto:[EMAIL PROTECTED] ]-- Vice President Network Operations http://www.firetrail.com/ Firetrail Internet Services Limited http://www.aphroland.org/ Everett, WA 425-348-7336http://www.linuxpowered.net/ Powered By:http://comedy.aphroland.org/ Debian 2.1 Linux 2.0.36 SMPhttp://yahoo.aphroland.org/ -[mailto:[EMAIL PROTECTED] ]-- 1:53pm up 133 days, 1:47, 4 users, load average: 1.42, 1.56, 1.53
Re: (fqdn) hostname resolution when using DHCP
On Wed, 29 Dec 1999, Salman Ahmed wrote: ssahme >how this work ? Will this approach require the network sysadmins to ssahme >change their (internal) DNS configuration ? Our network admins know of ssahme >only one OS: Windoze, and generally don't know d*** about ssahme >Unix/Linux/*BSD, so I am a little hesitant to try anything that requires ssahme >their intervention. yes they would have to point the machine(s) to that DNS, for optimal performance they should be going to a machine on the internal network anyways(and best security). ssahme >but this would require: ssahme > a) updating the LM hosts file on a lot of windoze boxes ssahme > b) changing the file everytime my linux box's IP address changes ssahme > because of DHCP you could give the linux box a static ip ..if its a permanent station i believe any permanent station should have a static ip. you may be able to setup samba on the linux boxes and then use WINS to locate them..didnt think of that till just now. ssahme >I am not familiar with DNS at all but is there a way to bind/associate a ssahme >hostname+domainname to an ethernet address ? I guess I might have to try ssahme >option (1). try option #3 if you want too :) nate [mailto:[EMAIL PROTECTED] ]-- Vice President Network Operations http://www.firetrail.com/ Firetrail Internet Services Limited http://www.aphroland.org/ Everett, WA 425-348-7336http://www.linuxpowered.net/ Powered By:http://comedy.aphroland.org/ Debian 2.1 Linux 2.0.36 SMPhttp://yahoo.aphroland.org/ -[mailto:[EMAIL PROTECTED] ]-- 11:30pm up 132 days, 11:24, 3 users, load average: 2.67, 2.40, 1.94
Re: (fqdn) hostname resolution when using DHCP
you could add a domain to a DNS in your local network so that works, or what is probably easier is look for the lmhosts file on the windows box (use find) it may be called lmhosts.sam or some shit, add the ip and the names there, it seems to be window's version of /etc/hosts. you may have to rename the lmhosts.sam file or copy it, i forget what it supposed to be and what its supposed to be named i just keep playing with it till it works. and it does work .. nate On Wed, 29 Dec 1999, Salman Ahmed wrote: ssahme > ssahme >I have a linux box running potato (updated as of a couple of hrs ago) + ssahme >kernel 2.2.13. The box gets its IP address via a DHCP server. I set the ssahme >hostname of this box when I first installed Debian (slink) off of the ssahme >CDs without any domain name. ssahme > ssahme >I noticed that from windoze boxes, I can't ping this box if I use the ssahme >fqdn hostname. Pinging by IP address works fine. But I want to be able ssahme >to ping this box from other linux/windoze boxes by using ssahme >hostname.domainname. ssahme > ssahme >How do I do this ? Do I have to setup a DNS server on this box ? ssahme > ssahme >Thanks for any info. ssahme > ssahme >-- ssahme >Salman Ahmed ssahme >ssahmed AT pathcom DOT com ssahme > ssahme > ssahme >-- ssahme >Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] < /dev/null ssahme > [mailto:[EMAIL PROTECTED] ]-- Vice President Network Operations http://www.firetrail.com/ Firetrail Internet Services Limited http://www.aphroland.org/ Everett, WA 425-348-7336http://www.linuxpowered.net/ Powered By:http://comedy.aphroland.org/ Debian 2.1 Linux 2.0.36 SMPhttp://yahoo.aphroland.org/ -[mailto:[EMAIL PROTECTED] ]-- 3:03pm up 132 days, 2:57, 3 users, load average: 1.70, 1.64, 1.53
