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Re: Can't find the DNS Servers

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From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: Can't find the DNS Servers
Date Mon, 25 Sep 2017 18:30:01 +0200
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On Mon, Sep 25, 2017 at 07:10:10PM +0300, Reco wrote:
> A common misconception. Here's how a determined userspace can beat
> immutable bit:
> 
> # mkdir testetc
> # touch testetc/resolv.conf
> # chattr +i testetc/resolv.conf
> # mv testetc/ testetc.orig
> # mkdir testetc
> # touch testetc/resolv.conf
> # echo evil dns > testetc/resolv.conf

You'd have to replace all the other files in /etc as well, or the
system wouldn't work very well.  But that's not the point.  The point
isn't to harden the system against an attacker bent on subverting your
name lookups.  It's to protect your locally modified configuration file
from being overwritten by well-meaning but stupid software programs.

(And yes, there are other ways to achieve that, but I've already posted
the <https://www.cyberciti.biz/faq/dhclient-etcresolvconf-hooks/> URL
in this thread.  Oops, I did it again.)

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Thread

Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-09-24 03:10 +0200
  Re: Can't find the DNS Servers Cindy-Sue Causey <butterflybytes@gmail.com> - 2017-09-24 06:40 +0200
    Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-09-25 21:50 +0200
      Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-09-26 09:00 +0200
        Re: Can't find the DNS Servers Richard Hector <richard@walnut.gen.nz> - 2017-09-27 11:20 +0200
          Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-09-27 18:40 +0200
            Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-01 22:40 +0200
              Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-02 04:30 +0200
            Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-02 04:30 +0200
              Re: Can't find the DNS Servers Weaver <weaver@riseup.net> - 2017-10-02 04:40 +0200
              Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-02 09:10 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-10-02 12:30 +0200
                Re: E-mail headers 101 (was: Can't find the DNS Servers) Reco <recoverym4n@gmail.com> - 2017-10-02 12:40 +0200
                Re: E-mail headers 101 (was: Can't find the DNS Servers) Gene Heskett <gheskett@shentel.net> - 2017-10-02 13:00 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-02 23:10 +0200
                Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-03 22:40 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-04 01:00 +0200
                Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-04 01:50 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-04 14:40 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-04 19:00 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 08:20 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-04 14:30 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 14:40 +0200
                Re: Can't find the DNS Servers Michael Stone <mstone@debian.org> - 2017-10-04 15:00 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-04 15:30 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-04 19:00 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-04 19:30 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-04 20:40 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-10-05 00:20 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-05 02:30 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-10-05 04:00 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-06 05:00 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-10-06 07:30 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-06 18:00 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-05 15:00 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-06 03:40 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-06 15:10 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-06 18:00 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 20:10 +0200
                Re: Can't find the DNS Servers Michael Stone <mstone@debian.org> - 2017-10-04 20:10 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 20:20 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-04 20:40 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 22:00 +0200
                Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-05 01:00 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-05 08:30 +0200
                Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-04 22:10 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-04 22:50 +0200
                Re: (solved) Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-05 19:10 +0200
                Re: (solved) Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-05 19:10 +0200
                Re: (solved) Can't find the DNS Servers Brian <ad44@cityscape.co.uk> - 2017-10-05 19:40 +0200
                Re: (solved) Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-10-05 20:40 +0200
                Re: (solved) Can't find the DNS Servers Brian <ad44@cityscape.co.uk> - 2017-10-06 16:10 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-02 23:00 +0200
                Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-10-02 23:40 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-10-03 05:10 +0200
  Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 15:00 +0200
    Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-25 15:20 +0200
      Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 15:30 +0200
        Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-25 15:50 +0200
          Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 16:00 +0200
            Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-25 16:30 +0200
              Re: Can't find the DNS Servers Gary Roach <gary719_list1@verizon.net> - 2017-09-30 04:20 +0200
                Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-30 08:50 +0200
                Re: Can't find the DNS Servers Curt <curty@free.fr> - 2017-09-30 14:00 +0200
    Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-25 17:40 +0200
      Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-09-25 18:20 +0200
        Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 18:30 +0200
          Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-09-25 18:40 +0200
        Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-25 23:40 +0200
          Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-09-26 20:00 +0200
            Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 21:10 +0200
      Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-25 19:40 +0200
        Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 20:00 +0200
          Re: Can't find the DNS Servers Reco <recoverym4n@gmail.com> - 2017-09-25 21:00 +0200
            Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 21:30 +0200
          Re: Can't find the DNS Servers Don Armstrong <don@debian.org> - 2017-09-25 21:30 +0200
            Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 21:50 +0200
              Re: Can't find the DNS Servers Don Armstrong <don@debian.org> - 2017-09-25 23:20 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-26 15:20 +0200
                Re: Can't find the DNS Servers <tomas@tuxteam.de> - 2017-09-26 15:50 +0200
                Re: Can't find the DNS Servers Darac Marjal <mailinglist@darac.org.uk> - 2017-09-26 16:10 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 17:40 +0200
                Re: Can't find the DNS Servers Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-26 16:30 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 17:30 +0200
                Re: Can't find the DNS Servers Michael Stone <mstone@debian.org> - 2017-09-26 17:40 +0200
                Re: Can't find the DNS Servers <tomas@tuxteam.de> - 2017-09-26 17:40 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 18:00 +0200
                Finding the appropriate manpage [Re: Can't find the DNS Servers] Don Armstrong <don@debian.org> - 2017-09-26 23:20 +0200
                Re: Finding the appropriate manpage [Re: Can't find the DNS Servers] Lck Ras <likcoras@riseup.net> - 2017-09-27 16:20 +0200
                Re: Finding the appropriate manpage [Re: Can't find the DNS Servers] Curt <curty@free.fr> - 2017-09-27 17:20 +0200
          Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 00:50 +0200
            Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-09-26 20:50 +0200
              Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-26 21:10 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 21:40 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-26 21:50 +0200
                Re: Can't find the DNS Servers Michael Stone <mstone@debian.org> - 2017-09-26 22:10 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-27 05:30 +0200
                Re: Can't find the DNS Servers David Wright <deblis@lionunicorn.co.uk> - 2017-09-27 00:50 +0200
              Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-26 21:30 +0200
                Re: Can't find the DNS Servers Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-26 21:50 +0200
                Re: Can't find the DNS Servers Gene Heskett <gheskett@shentel.net> - 2017-09-27 05:40 +0200
    Re: Can't find the DNS Servers Celejar <celejar@gmail.com> - 2017-09-26 05:20 +0200

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