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   BBBS.ENGLISH      The International BBBS Support Echo      2,762 messages   

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   Message 1,102 of 2,762   
   Janis Kracht to mark lewis   
   Telnet Login Attacks?   
   21 Jan 15 17:11:32   
   
   Hi Mark,   
      
   >> Any tips or suggestions as to a way to limit/avoids telnet login   
   >> attacks on BBBS?   
      
   >they're scripts looking for unpatched telnet servers or those that they can ru   
   > a dictionary attack against using the lists of usernames and passwords they   
   > have gathered...   
      
   Yes, agree there.  These logins that Jeff mentions have been happening here as   
   well... most times they don't attempt to login... just connect, then sprout   
   another node, disconnect, & on and on. They sometimes come in droves    
      
   >most are likey to be botnets since those folks over there seem to prefer to ru   
   > pirated OSes which can't or won't be patched... then again, many over there   
   > probably don't even know they've been hacked and taken over...   
      
   > i've found the best protection is in the perimeter firewall using an active   
   > response system that blocks connections based on the traffic they transmit...   
      
   Do you mean block out say ip ranges? Outside of that I can't figure out how to   
   deal with this since it's now not only china, but korea, today I saw a number   
   of them from Mexico ... geez.   
      
   >> Then there are those few that try to login via telnet as "Root".   
   >> :-)   
      
   > yeah, you should put that one as well as admin and administrator in your bad   
   > names file... and 1234, 12345 as well   
      
   Yes, have done that early on    
      
   > and also in your bad passwords file...   
      
   Hmm.. I don't think BBBS has a bad passwords file.. there is a bad username   
   file though...   
      
      
   Take care,   
   Janis   
      
   --- BBBS/Li6 v4.10 Dada-2   
    * Origin: Prism bbs (1:261/38)   

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