Hello cracks

Since a few days (weeks already) we have noticed lots of tcp probes to port 4357
always from the same source address (204.92.55.110):

5 probe(s) under 1 minutes from: 204.92.55.110 on port: 4357 at Wed Jun 30 11:18:24 
1999

 rule                  protocol                                          port          
                                time
 ----                  --------                  ----------                  ----

  1                                  6 (tcp)          4357 (                  ? )  Wed 
Jun 30 11:14:20 1999
  2                                  6 (tcp)          4357 (                  ? )  Wed 
Jun 30 11:15:21 1999
  3                                  6 (tcp)          4357 (                  ? )  Wed 
Jun 30 11:16:22 1999
  4                                  6 (tcp)          4357 (                  ? )  Wed 
Jun 30 11:17:23 1999
  5                                  6 (tcp)          4357 (                  ? )  Wed 
Jun 30 11:18:24 1999


A PTR lookup with this ip address tells me the url web2.tor.accglobal.net.
After digging for ip address and domain name I found the following:

UUNET Canada Inc. (NETBLK-UUNET-1) UUNET-1                                      
204.92.0.0 - 204.92.255.0
Internex Online Inc. (NETBLK-IO-NET7) IO-NET7                      204.92.48.0 - 
204.92.55.255

Registrant:
ACC Long Distance (ACCGLOBAL2-DOM)
400 West Ave
Rochester NY, NY 14534
US
Domain Name: ACCGLOBAL.NET
Administrative Contact, Technical Contact, Zone Contact:
Administration, Dns  (DA502)  [EMAIL PROTECTED]
+1 416 236 3636 (FAX) +1 416 207 7123

I've already sent complaining mails to [EMAIL PROTECTED], [EMAIL PROTECTED],
[EMAIL PROTECTED] and [EMAIL PROTECTED], but nothing happend. The
probes still go on.

Has anybody an idea of the purpose of the port 4357 and of what I could do
against these probes ?

Thanks very much for your help !
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