Re: [iPAQ] PPP and IP questions

Ellen: When I use minicom to log in as ppp on my ipaq, I get:

login: ppp
PAM_unix[178]: (login) session opened for user ppp by LOGIN(uid=0)
~ÿ}#.!}!}!} }4}"}&} } } } }%}&âÅ.0}'}"}(}".`~~ÿ}#.!}!}!} }4}"}&} } } }
}%}&âÅ.0}'}"}(}".`~ ....

(reassuring gibberish)

I do all this as root on the desktop side.

Are you using a cramfs based distribution? I was able to write to my system
area (useful in chmod of pppd) by editing /etc/fstab and getting rid of a
'read-only' option. I am using the jffs2 based familiar distribution, though.

--Doug Hunt

Ellen Dash wrote:
>
> Thank you for the replies! ... I think I understand more, but I still don't
> have it working. :-(
>
> Again, I'm following the directions from the handhelds wiki PPPHowto. The
> only deviation that I have made is the /etc/ppp/options file on the iPAQ has
> /dev/ttyS0 (instead of /dev/ttySA0). If I try running pppd on the iPAQ with
> the ttySA0 setting, it gags.
>
> With debug on, here's what I see in the /var/log/messages file on my laptop:
> Apr 18 21:36:18 dash pppd[908]: pppd 2.3.11 started by root, uid 0
> Apr 18 21:36:19 dash chat[909]: expect (ogin)
> Apr 18 21:36:22 dash chat[909]: alarm
> Apr 18 21:36:22 dash chat[909]: send (^M)
> Apr 18 21:36:22 dash chat[909]: expect (ogin:)
> Apr 18 21:36:22 dash chat[909]: ^M
> Apr 18 21:36:22 dash chat[909]: Handhelds Linux v0.16 device ttyS0^M
> Apr 18 21:36:22 dash chat[909]: ^M
> Apr 18 21:36:22 dash chat[909]: device login:
> Apr 18 21:36:22 dash chat[909]: -- got it
> Apr 18 21:36:22 dash chat[909]: send (ppp^M)
> Apr 18 21:36:22 dash pppd[908]: Serial connection established
> Apr 18 21:36:22 dash pppd[908]: Using interface ppp0
> Apr 18 21:36:22 dash pppd[908]: Connect: ppp0 <--> /dev/ttyS0
> Apr 18 21:36:53 dash pppd[908]: LCP: timeout sending Config-Requests
> Apr 18 21:36:53 dash pppd[908]: Connection terminated
> Apr 18 21:36:54 dash pppd[908]: Exit
>
> On the xterm I can see the 10 attempts to send config requests.. they look
> something like:
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic ...> <pcomp> <accomp>]
>
> Speculating that it was possibly a timing issue, I've tried adding the line:
> lcp-max-configure 20
>
> to the /etc/ppp/peers/ipaq file, but that appears to not work at all -- it
> renders the connection attempt as bad. (Maybe a problem with my version of
> pppd?) Anyway... I don't think that's the issue.
>
> I'm suspicious of what's happening on the iPAQ with the starting of the pppd
> over there. It's supposed to happen when ppp logs in via the connect from
> the laptop. I don't know how to debug this step any further, but I have a
> feeling that it's not working properly. If I attempt to login to the iPAQ
> as ppp, it gives me the following error:
>
> -pppd: must be root to run -pppd, since it is not setuid-root
>
> Well, I tried to chmod /sbin/pppd (I think it was chmod u+s ... or something
> like that), but it didn't work because it is not in a writable partition.
> sigh... I bet there's some other linux way around this.. possibly in
> /etc/passwd.
>
> OK... a lot said, but still no progress. One big question for me is it ok
> if the pppd's on both the iPAQ and the laptop are trying to use /dev/ttyS0?
> I've not had much success in trying other options.
>
> Here's one other thing that I tried...
>
> I got on minicom and started the pppd on the iPAQ and sent it to the
> background.
>
> pppd /dev/ttyS0 noauth 115200 &
>
> Then I quickly exited minicom.
> >From the laptop, I tried to start pppd with (I think):
>
> pppd /dev/ttyS0 debug nocrtscts noauth lock 115200 :
>
> I think this approach is close to working. In the /var/log/messages file I
> saw attempts to connect, but then the following messages too:
> Receive serial link is not 8-bit clean
> Problem: all had bit 7 set to 0
> Exit
>
> I'm fairly certain that the minicom has the proper settings, but I didn't
> double check. It worked fine for the download of flash and I haven't
> changed anything since then.
>
> Apologies for the loooonnnnggg message. I just wanted to share the details
> in the hope that someone could help.
>
> Thanks,
> Ellen
>
> >From: Doug Hunt <dhunt@ucar.edu>
> >To: Ellen Dash <edash_dgi@hotmail.com>
> >CC: ipaq@handhelds.org
> >Subject: Re: [iPAQ] PPP and IP questions
> >Date: Wed, 18 Apr 2001 16:46:56 -0600
> >
> >Ellen: I finally got PPP working between my desktop redhat box an my ipaq
> >(familiar 0.3). Here are some things which helped me:
> >
> >-- Look in the /var/log/messages file on your laptop for debug info.
> >-- I was having trouble getting the 'Login:' message from the ipaq. I
> >finally
> >had to change my chat script (in /etc/ppp/peers/ipaq) to something like
> >this:
> >
> >connect '/usr/sbin/chat -v -t3 word:-- ppp'
> >
> >This pretty well sends 'ppp' in all cases.
> >
> >-- I had to take out the 'noipdefault' option in /etc/ppp/options on my
> >home
> >machine (which uses ppp to connect to the internet).
> >
> >Fiddling with any of these things may help.
> >
> >Regards,
> >
> > Doug Hunt
> >
> >Ellen Dash wrote:
> > >
> > > [ stuff deleted ] --
> >dhunt@ucar.edu
> >Software Engineer III
> >UCAR - COSMIC
> >Tel. (303) 497-2611
>
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-- 
dhunt@ucar.edu
Software Engineer III
UCAR - COSMIC
Tel. (303) 497-2611