All of lore.kernel.org
 help / color / mirror / Atom feed
From: Bill Vodall WA7NWP <wa7nwp@jnos.org>
To: linux-hams@vger.kernel.org
Subject: ax25 Listen as a service
Date: Thu, 15 Dec 2005 14:23:32 -0800	[thread overview]
Message-ID: <43A1ECE4.1020406@jnos.org> (raw)
In-Reply-To: <43A1BAE9.4000009@jnos.org>


Attention deficit?  Easily distracted.  Couldn't be me....

While playing with the UroNode as a program launched from a socket, it 
dawned on me that it might be possible to do the very same with 
''listen.''  Often I SSH in to a remote system simply to watch the 
packet activity in the area.  I don't need the shell for that, just the 
listen.

So I gave it a try:

--- in /etc/services ---

   axlisten 3695/tcp  # Linux ax25 listening

--- in /etc/xinetd.conf I added ---

service axlisten
{
         socket_type     = stream
         protocol        = tcp
         wait            = no
         user            = root
         server          = /usr/bin/listen
         server_args     = -act
}

---

Then I sent a -HUP to xinetd and tried it.

   telnet localhost 3695

Wow?  I see packets scrolling by.  Pretty cool!

Now the question for the group.  Is there a better way to do this?  Is 
there anything inherently dangerous with doing this where I'm leaving 
the systems wide open to some exploit?

Thanks,
Bill - WA7NWP

  reply	other threads:[~2005-12-15 22:23 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <0006$01c12a35$017630fc@arti>
2005-12-08 21:43 ` AX25 to Telnet to CONV Bill Vodall WA7NWP
2005-12-08 22:02   ` Dennis Boone
2005-12-09  0:40     ` Bill Vodall WA7NWP
2005-12-11 21:54     ` Bill WA7NWP
2005-12-12  7:55       ` ronnie
2005-12-12 21:00         ` Bill Vodall
2005-12-14 16:17           ` Bill Vodall
2005-12-14 16:44             ` Dennis Boone
2005-12-14 17:24               ` Bill Vodall
2005-12-15 18:50                 ` AX25 now to dump a text file Bill Vodall WA7NWP
2005-12-15 22:23                   ` Bill Vodall WA7NWP [this message]
2005-12-16  3:18                     ` ax25 Listen as a service Chuck Hast
2005-12-16  3:44                       ` Chuck Hast
2005-12-16 18:40                         ` Bill Vodall WA7NWP

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=43A1ECE4.1020406@jnos.org \
    --to=wa7nwp@jnos.org \
    --cc=linux-hams@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.