[cups.general] short host name versus FQDN in Allow directives

[Matthias Czapla]

On Thu, Jul 01, 2004 at 02:38:22PM +0200, Helge Blischke wrote:
> Matthias Czapla wrote:
> > 
> > On Wed, Jun 30, 2004 at 09:03:37AM -0400, Michael Sweet wrote:
> > > >So I tried to put the short host name "ddm" in the Allow directive
> > > >and then it works. Why doesn't the FQDN work too? I have a local DNS
> > > >server running and so far it has worked without troubles, i.e. I can
> > > >lookup host names and IPs forward and reverse:
> > > >
> > > ><root at ddm /etc/cups>host ddm
> > > >ddm.fick.xxx has address 192.168.128.1
> > > ><root at ddm /etc/cups>host ddm.fick.xxx
> > > >ddm.fick.xxx has address 192.168.128.1
> > > ><root at ddm /etc/cups>host 192.168.128.1
> > > >1.128.168.192.in-addr.arpa domain name pointer ddm.fick.xxx.
> > > >
> > > >Of course this is all not a super big problem because I could just
> > > >use the short names, but shouldn't the FQDN work exactly the same?
> > >
> > > It should - check the /etc/hosts file on your server and make sure
> > > that the short hostname isn't listed there...
> > 
> > It isn't. Here is my /etc/hosts:
> > 
> > 127.0.0.1       localhost
> > 
> > # The following lines are desirable for IPv6 capable hosts
> > # (added automatically by netbase upgrade)
> > 
> > ::1     ip6-localhost ip6-loopback
> > fe00::0 ip6-localnet
> > ff00::0 ip6-mcastprefix
> > ff02::1 ip6-allnodes
> > ff02::2 ip6-allrouters
> > ff02::3 ip6-allhosts
> > 
> > Regards
> > Matthias
> 
> It might depend on your settings in /etc/nsswitch.conf (if your system
> makes
> use of this) and/or the DNS configuration. Problems may arise if you use
> both
> DNS and NIS (not NIS+) as both have a different view on how domains are
> organized.

I don't have anything NIS-related installed. Here is a typescript
showing everything (hopefully) that could be important regarding
my DNS configuration:

Script started on Thu Jul  1 19:42:42 2004
<lal at ddm ~>cd /etc
<lal at ddm /etc>cat nsswitch.conf 
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis
<lal at ddm /etc>cat resolv.conf 
search fick.xxx
nameserver 127.0.0.1
<lal at ddm /etc>cd bind/
<lal at ddm /etc/bind>ls
db.0	db.192.168.128	db.fick.xxx  db.root	 rndc.key
db.127	db.255		db.local     named.conf
<lal at ddm /etc/bind>cat db.fick.xxx 
$TTL 3D
@	IN	SOA	ddm.fick.xxx. hostmaster.fick.xxx. (
			199802151	; serial
			8H		; refresh, seconds
			2H		; retry, seconds
			4W		; expire, seconds
			1D )		; minimum TTL
;
@	IN	NS	ddm		; Inet address of name server
@	IN	MX	10 ddm.fick.xxx.	; mail exchanger
;
localhost	A	127.0.0.1
ddm		A	192.168.128.1
stube		A	192.168.128.3
runkel		A	192.168.128.4
plonk		A	192.168.128.5
<lal at ddm /etc/bind>cat db.192.168.128 
$TTL 3D
@	IN	SOA	ddm.fick.xxx. hostmaster.fick.xxx. (
			199802151	; serial
			8H		; refresh
			2H		; retry
			4W		; expire
			1D )		; minimum TTL
		NS	ddm.fick.xxx.
;
1		PTR	ddm.fick.xxx.
3		PTR	stube.fick.xxx.
4		PTR	runkel.fick.xxx.
5		PTR	plonk.fick.xxx.
<lal at ddm /etc/bind>tail -n 13 named.conf 
// add entries for other zones below here

zone "fick.xxx" {
	type master;
	notify no;
	file "/etc/bind/db.fick.xxx";
};

zone "128.168.192.in-addr.arpa" {
	type master;
	notify no;
	file "/etc/bind/db.192.168.128";
};
<lal at ddm /etc/bind>
Script done on Thu Jul  1 19:44:57 2004

Regards
Matthias