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

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   Message 1,333 of 2,762   
   Jeff Smith to Robert Wolfe   
   Telnet Login Attacks?   
   10 May 16 18:20:20   
   
   Hello Robert.   
      
   10 May 16 17:44, you wrote to me:   
      
    RW> -=> Jeff Smith wrote to All <=-   
      
    JS>> Any tips or suggestions as to a way to limit/avoids telnet login   
    JS>> attacks on BBBS?   
      
    JS>> Lately I have been getting numerious telnet login attempts by   
    JS>> IP's that reversely resolve to Asian countries. The same IP will   
    JS>> try to login to all available nodes. No actual login is   
    JS>> attempted. Each open node will sit open at the login name   
    JS>> prompt.I have been adding up to 5 IP's at a time to the INET.BBB   
    JS>> file. Which then blocks those IP's. But there are plenty of other   
    JS>> IP's. :-)   
      
    RW>  Yeah, I think that this is a problem for every one of us that runs a   
    RW>  BBS.  It got to the poing where I have inbound telnet and binkp   
    RW>  connections running on only a certain group of nodes and web services   
    RW>  running on another group of nodes.   
      
      
   I posted the above message shortly after I setup BBBS and noticed a rash   
   of "root" and "sysop" login attempts. As well as DOS (Denial of Service)   
   attempts by trying to login to all available nodes from the same IP. I   
   quickly configured BBBS to reject logins using invvalid user info. As well   
   as blocking DOS Ip's for a time. At one point I had some 5000 IP's that   
   were being blocked. That type of activity has dimished considerably over   
   the last year.   
      
      
    RW>  * Suicidal dyslexic jumps behind train - film at 11   
    RW>  * TagIt!/2 Version 1.00 for OS/2   
      
    RW> --- BBBS/2 v4.10 Dada-1   
    RW>  * Origin: Neptune's Lair/2 (1:116/17)   
      
   Jeff   
      
   --- GoldED+/W32-MINGW 1.1.5-b20070503   
    * Origin:  Region 14 IP Server - ftn.region14.org (1:14/5)   

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