Nathan O. Siemers wrote:
> I've got a weird one, folks.
Not really, it's just a feature in your modem :)
> I've got a debian slink box serving as router for a network connected
> to the internet by a dialup ppp connection. It does some masquerading
> for the other systems on the local network, which include another
> slinkbox and a redhat 5.2 system.
>
>
> Yesterday, following the link:
>
> http://slashdot.org/comments.pl?sid=99/03/20/1158230&pid=0#35 ,
>
> reading with netscape 4.07 on the redhat 5.2 system,
>
> killed my ppp connection to the internet from my slink router.
>
> This happened reproducibly (5 times) when I hit that particular page
> (not a couple other pages at slashdot), at around 64K of download. I
> sent lots of other test stuff over the ppp connection with no
> problems.
>
>
> Is there a ghost in the machine? How could that happen? Is this a
> freak coincidence or the tickling/exploit of a pppd bug? It there an
> escape sequence embedded in the transfer that could reset the modem?
Escape sequence is probably the correct quess. I just
downloaded the page and one of comments had this signature:
-- + ++ATH0
^
Space added by me to protect modem owners. My guess is your
modem saw the three plus signs and hung up.
Thus bug was discussed on linux-kernel last month. If you
go to http://linuxhq.com/lnxlists/linux-kernel/ and check
the linux-kernel mailing list archives for Feb 1999 - Week 1
and Feb 1999 - Week 2, you'll find the whole discussion
under subjects:
"PPP bug",
"Re: plus plus plus [was: PPP bug]" and
"Modems and the + + + bug"
Here is a quote from a message by [EMAIL PROTECTED]:
Like has been mentioned here recently (last week, I recall),
if you have this problem, turn off the local modem escape by
issuing AT S2=255 command before doing dialing; or dial by:
ATS2=255DTnnnnnnnnnnn
that is, prefix the dial command (DTnnnn) with escape disable
command.
Check your modem manual for the S-register number, and
disabling value. Document I used said 'escape is turned off
with any value above 127'.
If the problem is at your ISP's side, then you need to inform
them.
> Perhaps I am just a victim of a freak coincidence.
>
> Thanks for any ideas,
>
> nathan
// Heikki
--
Heikki Vatiainen * [EMAIL PROTECTED]
Tampere University of Technology * Tampere, Finland
