Chargen (UDP port 19) – Reflected ddos

Lately I’m seeing chargen service being abused a lot to execute distributed denial of service attacks.
It’s not just "standard ddos”… it’s a reflected ddos with a massive amplification rate!!!
(Amplification rate can be as high as 512x… that means with that just a 100mbit pipe a malicius attacker could easely accomplish a 10gbit+ ddos!)
( font:http://evcz.tk/blog/2012/05/06/chargen-udp-port-19-reflecte-ddos)

We received lot reflected DDoS with source port 19 on these days, so we decided to ACLs (block) our routers to block this port source.

Please if someone had trouble using this port let us know opening a trouble ticket and we put an exception.

Thank you
 
© 2017 SeFlow All Rights reserved | Home | Server Dedicati | Server Virtuali | Domini | Contatti