Re: About DNS
From: Tim Haynes (usenet-Jan-28-2003@stirfried.vegetable.org.uk)
Date: 01/28/03
- Next message: Bastian Ballmann: "Re: IPTABLES tools -- pakcet generators, tracers debugger etc"
- Previous message: The Unknown Hacker: "Re: About DNS"
- In reply to: dragon: "About DNS"
- Next in thread: Philippe Gaudron: "Re: About DNS"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
From: Tim Haynes <usenet-Jan-28-2003@stirfried.vegetable.org.uk> Date: Tue, 28 Jan 2003 16:11:49 +0000
"dragon" <siao@eastmail.com> writes:
> Fact : Only root can bind the privileged ports(0~1023)
Well, unless you've got a bunch of ACL patches installed in the kernel, of
course.
> Fact : DNS service uses port 53
Normally, yes.
> Fact : In my system, the effective user of the process "named" is "bind"
> Question : How can this user "bind" uses port 53?
See the definition of `ns_os_changeuser' in bin/named/unix/os.c, around
line 392ish (assuming bind-9.2.2rc1). Actually, that whole file could be
moderately enlightening.
~Tim
-- Roobarb and Custard let fly |piglet@stirfried.vegetable.org.uk with their secret weapon. |http://spodzone.org.uk/
- Next message: Bastian Ballmann: "Re: IPTABLES tools -- pakcet generators, tracers debugger etc"
- Previous message: The Unknown Hacker: "Re: About DNS"
- In reply to: dragon: "About DNS"
- Next in thread: Philippe Gaudron: "Re: About DNS"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Relevant Pages
|
