Re: Internet connections
> Unfortunately these viruses don't go away, they keep trying to get
> into the Psion and so lock the I'Net connection.[/color]
Refusing a call because you don't have a soctet listening to that port
shoudln't consume many resources.
> Some of the ports that the Psion automatically opens when it
> connects to the I'Net are probed by these viruses.[/color]
Sorry, but if a machine opens some default ports while connecting to the
internet and you cannot get a list from your machine of what ports are opened,
then this is a VERY SERIOUS SECURITY FLAW IN THE MACHINE.
If you just connect to the internet to use www or read emails, your machine
needs a total of 0 (zero) ports opened for incoming calls. There will be ports
used for outgoing calls, but they are well outside the "well known ports" range.
The only time a "client" on the net needs to listen for a port is during
non-passive FTP. The remote server will initiate the data connection to send
the file you requested on the command connection. Again, those ports are
generally well outside the well known ports range, and the FTP client on the
PSION (if such exists) would listen in to the negotiated port number for that
one inbound call and then close that socket once data transfer is complete.
(now, when you start to add software such as IRC or other conferencing stuff,
you will need to have some well known ports listening for incoming calls).
Re: Internet connections
I'm not an InterNet expert/guru. I had this problem on my Psion using
Web and Opera and the Psion's normal connection. Perhaps if I used a
script (though Psion do not actually recommend this) the relevant
would be closed.
Unfortunately most users wouldn't understand a login script if it bit
But this *still* wouldn't stop these viruses (as they're Windows
would just stop them trying to get into my Psion. The Psion does not
which ports it opens so obviously there is "VERY SERIOUS SECURITY FLAW
THE MACHINE", but that doesn't mean no-one should try to solve it, nor
the only responsibility for stopping these viruses is Psion's.
It is really the ISPs.
ISPs should block them because, as I keep saying, they *must* be using
resources to propagate. Also some users *must* have these ports open
these viruses wouldn't propagate. Consequently ISPs are allowing these
viruses to infect their customers. That's *their* responsibility.
I'll try to solve this problem if I can but that doesn't absolve any
ISP of their
responsibility, it just means I want my Psion to be usable on the
It's no use saying that this shouldn't happen, or even that it can't
happen, when it
is happening. It's no use saying the Psion I'Net connection shouldn't
when it does.
Hans Lubs "Sink" appears to work and my I'Net connection on the Psion
more reliable. For this I'm very grateful. If you don't use your Psion
on the I'Net,
or only through a firewal, you won't have noticed the problem - you're
don't have a hardware firewall, my Mac has a software firewall and my
Actually I do have an FTP program on my Psion, RMRFTP, which was just
frequently affected as my other I'Net apps which include TimeKeeper,
Time, EpocSync, Hermes, JTelNet, Snaffle, FTPServer and NetUtils - but
haven't used them all. I also appear to have an unregistered (and
of Web Grabber.