9 Dec
2015
9 Dec
'15
8:53 p.m.
On 10 December 2015 at 01:48, alvin nanog <nanogml@mail.ddos-mitigator.net
wrote:
what app do yu have that talks to port 1900 ?
UDP 1900 is a "Chargen" UDP reflection attack. The DNS and NTP packets are also from a reflection attack.
Sorry I was made aware that UDP 1900 is SSDP. We still block it :-) To my knowledge there is no real use case for it and no user has ever complained about that being blocked. Regards, Baldur