Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #196038

Re: Get the external IP address from a Linux box

From Abdullah Ramazanoğlu <ar018@yahoo.com>
Newsgroups linux.debian.user
Subject Re: Get the external IP address from a Linux box
Date 2018-05-24 09:40 +0200
Message-ID <vST0R-5UC-5@gated-at.bofh.it> (permalink)
References <vSS4N-5l7-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Thu, 24 May 2018 07:22:56 +0100 André Rodier said:

> I am looking for a native package on Debian, that can give me the
> external IP address of the machine.
> 
> So far, I used internet sites, but I am sure there is a package that do
> that properly, especially if one site is unreachable.
> 
> Something I can run from the command line, and that would return the
> external IP address.

Unless you have a dedicated IP address, then even if you directly connect to
your ISP (no routers, no NAT) you will likely get a local pool address and from
there routed to the internet by your ISP. In that case your link will have 2
*local* addresses (e.g. 192.168.. or 10...) : one for your side, one for ISP
side. You first enter ISP's local IP pool, and from there exit to the internet
over a real address from ISP's address block.

It can be visualized as a local cloud of ISP. One side of the cloud faces
customers (local reserved IP range), the other side faces the internet (real IP
address pool). E.g. I am connected through 3G modem and my IP and my address
starts with 10.x.x.x - an A class reserved block address.

The only reliable way (AFAIK) is going through some sort of "loop-back"
mechanism to see your external address. External sites are one way of achieving
this.

John Conover's (dig) and likcoras' (script) solutions look promising in that
regard.

Regards
-- 
Abdullah Ramazanoğlu

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-24 08:40 +0200
  Re: Get the external IP address from a Linux box conover@rahul.net (John Conover) - 2018-05-24 08:50 +0200
    Re: Get the external IP address from a Linux box likcoras <likcoras@riseup.net> - 2018-05-24 09:00 +0200
      Re: Get the external IP address from a Linux box conover@rahul.net (John Conover) - 2018-05-24 09:30 +0200
        Re: Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-24 10:00 +0200
  Re: Get the external IP address from a Linux box <tomas@tuxteam.de> - 2018-05-24 09:00 +0200
  Re: Get the external IP address from a Linux box Joe <joe@jretrading.com> - 2018-05-24 09:10 +0200
    Re: Get the external IP address from a Linux box Alberto Luaces <aluaces@udc.es> - 2018-05-24 09:10 +0200
      Re: Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-24 09:20 +0200
        Re: Get the external IP address from a Linux box <tomas@tuxteam.de> - 2018-05-24 09:40 +0200
        Re: Get the external IP address from a Linux box Joe <joe@jretrading.com> - 2018-05-24 11:30 +0200
          Re: Get the external IP address from a Linux box Joel Rees <joel.rees@gmail.com> - 2018-05-31 02:10 +0200
      Re: Get the external IP address from a Linux box Stefan Monnier <monnier@iro.umontreal.ca> - 2018-05-24 22:20 +0200
        Get the external IP address from a Linux box Erwan David <erwan@rail.eu.org> - 2018-05-24 22:40 +0200
          Re: Get the external IP address from a Linux box Miles Fidelman <mfidelman@meetinghouse.net> - 2018-05-24 23:30 +0200
    Re: Get the external IP address from a Linux box Richard Hector <richard@walnut.gen.nz> - 2018-05-26 08:20 +0200
  Re: Get the external IP address from a Linux box Abdullah Ramazanoğlu <ar018@yahoo.com> - 2018-05-24 09:40 +0200
    Re: Get the external IP address from a Linux box <tomas@tuxteam.de> - 2018-05-24 09:50 +0200
    Re: Get the external IP address from a Linux box Dan Purgert <dan@djph.net> - 2018-05-24 13:20 +0200
      Re: Get the external IP address from a Linux box Abdullah Ramazanoğlu <ar018@yahoo.com> - 2018-05-25 03:30 +0200
        Re: Get the external IP address from a Linux box Dan Purgert <dan@djph.net> - 2018-05-25 20:40 +0200
  Re: Get the external IP address from a Linux box Peter Ludikovsky <peter@ludikovsky.name> - 2018-05-24 13:20 +0200
  Re: Get the external IP address from a Linux box Greg Wooledge <wooledg@eeg.ccf.org> - 2018-05-24 14:10 +0200
    Re: Get the external IP address from a Linux box Dan Purgert <dan@djph.net> - 2018-05-24 15:00 +0200
  Re: Get the external IP address from a Linux box Alan Greenberger <alanjg@ptd.net> - 2018-05-25 03:10 +0200
    Re: Get the external IP address from a Linux box Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-05-26 13:20 +0200
      Re: Get the external IP address from a Linux box Alan Greenberger <alanjg@ptd.net> - 2018-05-28 14:10 +0200
        Re: Get the external IP address from a Linux box David Wright <deblis@lionunicorn.co.uk> - 2018-05-28 19:50 +0200
          Re: Get the external IP address from a Linux box Alan Greenberger <alanjg@ptd.net> - 2018-05-29 14:10 +0200
            Re: Get the external IP address from a Linux box David Wright <deblis@lionunicorn.co.uk> - 2018-06-02 16:40 +0200
        Re: Get the external IP address from a Linux box Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-05-28 23:20 +0200
          Re: Get the external IP address from a Linux box Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-05-29 15:00 +0200
            Re: Get the external IP address from a Linux box David Wright <deblis@lionunicorn.co.uk> - 2018-06-02 16:50 +0200
  Re: Get the external IP address from a Linux box Michael Stone <mstone@debian.org> - 2018-05-26 03:10 +0200
    Re: Get the external IP address from a Linux box Kenneth Parker <sea7kenp@gmail.com> - 2018-05-26 03:20 +0200
      Re: Get the external IP address from a Linux box Greg Wooledge <wooledg@eeg.ccf.org> - 2018-05-29 15:10 +0200
  Re: Get the external IP address from a Linux box Kenneth Parker <sea7kenp@gmail.com> - 2018-05-26 03:10 +0200
  Re: Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-26 13:00 +0200
    Get the external IP address from a Linux box Andrew McGlashan <andrew.mcglashan@affinityvision.com.au> - 2018-05-27 13:20 +0200
      Re: Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-27 14:20 +0200
        Re: Get the external IP address from a Linux box Andrew McGlashan <andrew.mcglashan@affinityvision.com.au> - 2018-05-27 15:50 +0200
          Re: Get the external IP address from a Linux box André Rodier <andre@rodier.me> - 2018-05-27 16:20 +0200

csiph-web