Thanks to Richard Duits, Joop Marijne and Lonny Schwartz for their replies.
It helped. Their replies are attached below.
The result is that the errornous packages that slip through and trigger
diald are much less now. But whenever netscape messenger is launched (or
left idle for a while) it will still trigger off diald (even though i have
filtered off all imap packages).
Another problem exist now, hope you guys can help. It seems that http (www)
access doesn't keep the diald link up even though i have the following lines
in my /usr/lib/diald/standard.filter:
accept tcp 120 tcp.dest=tcp.http
accept tcp 120 tcp.source=tcp.http
and even.....
accept tcp 120 tcp.dest=tcp.www
accept tcp 120 tcp.source=tcp.www
The line will just drop after 10 seconds following the default catch-all
rule which I set to 10 seconds:
accept tcp 10 any
I have both http and www setup in my /etc/services file so they shoudl be
correct.
Any ideas to make it work?
Thanks
Ben
-----Original Message-----
From: Joop Marijne <[EMAIL PROTECTED]>
To: Ben <[EMAIL PROTECTED]>
Date: Wednesday, May 05, 1999 4:24 PM
Subject: Re: IMAP and Diald
>Hi there,
>
>Had the same problem here, when I blocked outgoing domain traffic, the
problem
>dissapeared.
>ignore tcp tcp.source=tcp.domain
>Hope thats helps
>
>Kind regards,
>Joop Marijne
-----Original Message-----
From: K.A. Steensma <[EMAIL PROTECTED]>
To: Ben <[EMAIL PROTECTED]>
Date: Tuesday, May 04, 1999 9:04 PM
Subject: Re: IMAP and Diald
>This was sent out some time ago and might solve your problem KAS
>
>add this to your firewalling rules:
>
>#Block Windows housekeeping trafic from triggering autodial etc.
>/sbin/ipfwadm -F -a deny -P tcp -S 0.0.0.0/0 137:139
>/sbin/ipfwadm -F -a deny -P udp -S 0.0.0.0/0 137:139
>
>
> ----------
>From: Lonny Schwartz
-----Original Message-----
From: Richard Duits <[EMAIL PROTECTED]>
To: Ben <[EMAIL PROTECTED]>; Linux-Diald <[EMAIL PROTECTED]>
Date: Tuesday, May 04, 1999 5:02 PM
Subject: Re: IMAP and Diald
>Ben wrote:
>
>> Hi all,
>>
>> I have a problem with unwanted packages that cause diald to dial out
>> unnecessarily.
>>
>> I have Red Hat 5.2 and Diald installed on my Linux server. It runs an
IMAP
>> server and uses fetchmail to fetch emails periodically from my ISP. From
my
>> client machines (running NT and Linux) we use Netscape messenger to read
>> mail from the Linux IMAP server.
>
>I had the same problem with netscape 4.5. It is not the IMAP but Messenger
>trying to load the netcenter webpage from the netscape site. You cannot
disable
>this with the netscape options dialog, you have to edit the config file
>directly.
>You can find how to do this, somewhere on help.netscape.com.
>
>>
>> The problem is often when a client machine tries to read mail from the
IMAP
>> server, the diald on the server is invoked and attempts a dial-up
>> (unnecessarily). On the server I have banned all imap packages in my
>> /usr/lib/diald/standard.filter using lines (see below) but somehow it
still
>> slip through. This happens everytime the client first start up the
>> netscape messenger, and once in a while during subsequent polling of
mails.
>
>Maybe it is a DNS request that opens the link. Use dctrl to see what opens
>the link. Add the ip-address to your /etc/hosts file to solve this problem.
>
>Richard Duits
>
>
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