[linux-help] Re: Port 18593 attacks

["Jonathan Hall" <flimzy@xxxxxxxxxx>]

Sounds like a bunch of port scans.  I'm not sure what method there might be
to the apparant madness, though.

Do you have a static IP address?  If not, do you continue to experience the
attacks after your IP changes?  It looks like you use Cox... I would suggest
powering off you cable modem for 2-5 minutes, then powering it back on.
That should force a new IP address.  Then see if the apparant attacks
continue.

It may be that someone (or many someones) found your IP address some where
(e-mail header, usenet posting, IRC logs... whatever), and whatever
mechanism is attacking you (whether it be an individual or, probably more
likely, some automated attack brought on by a trojan horse/virus on some
unsuspecting person/people's computers) is continuing to attack that
address.

I had an instance several years ago where one of my IP addresses was being
attacked after I had connected to a certian IRC network from that IP
address.  A number of IPs then began attacking that IP address for days.  By
changing IP addresses, the attacks then fail, and so long as the target IP
address is not again visible to the would-be attackers, the attacks can not
begin again.

-- Jonathan


----- Original Message -----
From: "bbales" <bbales@xxxxxxx>
To: <linux-help@xxxxxxxxx>
Sent: Sunday, August 01, 2004 8:35 PM
Subject: [linux-help] Re: Port 18593 attacks


> No - In one bunch of 916 hits there were 110 different addresses.  38 were
to
> UDP, the rest to TCP.  Usually hits an address/port combination two to
four
> times and then switches.  Sometimes switches address and port in less than
a
> second (two hits with the same time-stamp.)  Most source ports are four
> digit, the rest are five digit.
>
> A sort on source addresses shows several addresses used quite a few times.
> 24.161.87.199 used 64 times with 16 different ports, each port used
exactly
> four times.
> 24.167.68.48 used 30 times, five different ports, each used exactly six
times.
> 68.113.250.214  24 times, 8 different ports, each used exactly three
times.
> 68.47.163.14  26 times, nine different ports, all but one used three times
and
> on used twice.
> 144.137.113.30 used 81 times with about 78 different ports.
> 217.226.110.2 used 106 times with ports used mostly three or four times.
>
> I'm sure that's more information than anyone wants.
> bruce
>
>
> On Sunday 01 August 2004 01:12, you wrote:
> > I am not aware of any server/software that uses TCP port 18593.  Do the
> > attacks appear to be originating from any particular sources?
> >
> > ----- Original Message -----
> > From: "bbales" <bbales@xxxxxxx>
> > To: <linux-help@xxxxxxxxx>
> > Sent: Saturday, July 31, 2004 9:52 PM
> > Subject: [linux-help] Port 18593 attacks
> >
> > > During the past week my Frazier Firewall has been turning away
thousands
> >
> > of
> >
> > > attempts at port 18593.  Some times as many as 245 in one hour.  In
the
> >
> > past
> >
> > > when I had a large number of hits on one port, I could find something
> >
> > about
> >
> > > it from Symantec or some forum on the web.  This time no-one is
reporting
> > > anything about port 18593.
> > >
> > > It seems to be overwhelming the firewall logging facilities as the
daily
> >
> > email
> >
> > > only reports the last six or eight hours.
> > >
> > > Anyone have any clues about this?
> > > bruce
> > >
> > >
> > > -- This is the linux-help@xxxxxxxxx list.  To unsubscribe,
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> >
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