Hi Michael -
Thanks for the response ...
In message <[EMAIL PROTECTED]>, Michael
Kohne writes:
>I'm no expert, but I'd say to check the following:
>Does the server this box is connecting to support LCP Echo
responses? I
Well, yes. I'm running the LCP echoing the whole time, and it works
for a variable amount of time ... up to a couple of minutes of time
during which the box is doing any masquerading/forwarding. When
pppd's debug option is set, I can see the LCP EchoRepl's coming back
in from the server... then they just stop.
>don't know a lot about the PPP protocol, but if the request is
going out,
>and no response is received, it seems to me that finding out if the
other
>end is sending the response could be useful. Mabey the server you're
>connecting to is misconfigured slightly, or buggy, or something and
it's
>just not responding.
>
That is what I was hoping .. I even got my ISP to update their
firmware on the Ascend's answering the call just in case .. didn't
really help. Now I've noticed the correlation between using the
inside hosts and the connection dropping, so I hesitate to force the
issue into their laps - I really can't get it to die unless I'm
exercising the masquerading.
>Second, if I'm not mistaken, LCP echo is a ppp-level packet, so it
should
>come straight out of the ppp drivers, so therefore, none of your
>forwarding, etc should have any effect on it. Or am I wrong? If LCP
echo is
>at a higher level, mabey you're filtering it.
>
No, I don't think you're wrong... That's part of why the problem is
so perplexing .. ;) I'm really quite baffled about how the
forwarding is affecting it ..
>Could the ISDN TA be filtering it somehow? I know some of the TA's
out
>there are pretty smart and capable of all sorts of odd behaviour
(The
>Bitsurfer, for instance, is capable of using caller ID info to
>allow/disallow connections). Checking the TA config might be a
useful
>exercise.
>
That is a good suggestion - I'll take a look.
>Good luck!
>
Thanks - again, I appreciate the input .. If anything else occurs to
you, please feel free to share.. ;)
I hope you don't mind me CC'ing this to the list - I'm hoping your
suggestions will tickle somebody else's brain ..
-Joshua
--------
Joshua Heling [EMAIL PROTECTED]
SecurePipe Communications, Inc.
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