Seeing a huge spike in REGISTER traffic attacking SIP servers out there. Many seem to be using Ingate SIParator SBC as an open relay.
APIBAN (https://apiban.org) is a free service to help protect you from these attacks.
Also, a good analysis of the last attack (written by Ivan Kwabena Nyarko) can be found here:
https://www.kwancro.com/post/another-open-relay-scan/
@fredposner some new vulnerability out there?
@mattcjordan Doesn't appear to be. More of identified vulnerability not fixed/handled and now being exploited again. Very targeted (this round) to the SIParator product.
@fredposner the Wild West is alive and well