[linux-help] Re: Port 18593 attacks

[ironrose <ironrose@xxxxxxx>]

Powering the cable modem off for 2-5 minutes and rebooting may not give 
you a new ip address with cox dhcp server.  Even the tech support staff 
are unable to release & renew your ip address from the cox dhcp server. 
  It may have to be released and renewed by a supervisor at cox.  I will 
check on that.  ~Anne

Jonathan Hall wrote:
> 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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>>
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>>
> 
> 
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