> > > On 10 December 2015 at 01:48, alvin nanog <nano...@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
