Internet Ports Blocked by OCOSA

We take security seriously at OCOSA. We believe it's in our best interest and yours for us to be good stewards and block the following ports both inbound and outbound on our network. Should there be a reason why you need these ports open please do open up a support request at https://myportal.ocosa.net/submitticket.php?step=2&deptid=1.

We have decided to block several ports at our edge routers:

PORT TRANSPORT PROTOCOL DIRECTION REASON FOR BLOCK IP VERSION
111 UDP RPC BOTH Malicous Attacks IPv4/6
135-139 TCP/UDP NetBios BOTH Worms, Viruses IPv4/6
445 TCP MS-DS/NetBios BOTH Worms, Viruses IPv4/6
520 UDP RIP BOTH Malicous Attacks IPv4
1433 TCP MS-SQL BOTH Worms,Trojans IPv4/6
1434 UDP MS-SQL BOTH Worms,SQLslammer IPv4/6
1080 TCP SOCKS BOTH Viruses, Worms, DoS Attacks IPv4/6
1900 UDP SSDP BOTH DoS Attacks IPv4/6



Should there be a reason why you need these ports open for your IP on our network please do open up a support request at https://myportal.ocosa.net/submitticket.php?step=2&deptid=1.
  • block internet ports, tcp udp filtering, worms trojans bots, network blocked ports
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