The joys of udp.
Christian Palecek Network Administrator Cybernet Inc. Hamilton, MT -------- Original message -------- From: Adair Winter <[email protected]> Date:12/18/2014 9:44 PM (GMT-07:00) To: Mikrotik Users <[email protected]> Subject: Re: [Mikrotik Users] block port 25? widened out my rule to show all traffic dst for my /21. 200-300Kbps all coming form China just hitting random IP's in the /21. that's amazing. On Thu, Dec 18, 2014 at 10:38 PM, Mike Hammett <[email protected]> wrote: Blackhole them! ;-) ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: "Adair Winter" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Thursday, December 18, 2014 10:36:46 PM Subject: Re: [Mikrotik Users] block port 25? weird... I just built a log rule for dst port 25 just to see what was coming and going from my network.... in about 40 seconds I had about 4000 packets logged... all 61.160.224.128 to an ip on my new /21 block from ARIN... which doesn't even have any customers on it. geez. On Thu, Dec 18, 2014 at 10:31 PM, Mike Hammett <[email protected]> wrote: If Server's Plus can't help them figure it out, then pass the buck along... ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: "Adair Winter" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Thursday, December 18, 2014 10:29:19 PM Subject: Re: [Mikrotik Users] block port 25? suuuuure... You think you'll call their mail provider first?? ha. On Thu, Dec 18, 2014 at 10:25 PM, Mike Hammett <[email protected]> wrote: Let Servers Plus deal with that... or whomever's mail server they're connecting to. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: "Adair Winter" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Thursday, December 18, 2014 10:23:03 PM Subject: Re: [Mikrotik Users] block port 25? You'll find some user somewhere who is still configured to send mail to a mail server on port 25. On Dec 18, 2014 10:17 PM, "Mike Hammett" <[email protected]> wrote: If you don't have mail servers then who cares? That said, unless a customer has a mail server, they should not be sending anything out on port 25. Block 'em all. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: "RickG" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Thursday, December 18, 2014 10:09:36 PM Subject: Re: [Mikrotik Users] block port 25? I dont have mail servers (thank God!). However, my IP addys continue to get blacklisted. I assume it's due to my subscriber's computers having trojans. Looking for suggestions on how to handle. On Thu, Dec 18, 2014 at 11:38 AM, Mike Hammett <[email protected]> wrote: Main IP? My mail servers get blacklisted once or twice a year due to compromised user credentials, but those are the only ones I care about. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: "RickG" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Thursday, December 18, 2014 10:35:04 AM Subject: [Mikrotik Users] block port 25? Folks, I'm tired of dealing with my main IP being blacklisted for SPAM by certain users. Is it worth blocking port 25 anymore or is that old news? -- -RickG KyWiFi _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users -- -RickG KyWiFi _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users -- Adair Winter VP, Network Operations / Owner Amarillo Wireless | 806.316.5071 C: 806.231.7180 http://www.amarillowireless.net _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users -- Adair Winter VP, Network Operations / Owner Amarillo Wireless | 806.316.5071 C: 806.231.7180 http://www.amarillowireless.net _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users -- Adair Winter VP, Network Operations / Owner Amarillo Wireless | 806.316.5071 C: 806.231.7180 http://www.amarillowireless.net
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