Mobile Services Switching Center (MSC) is a core element in GSM/UMTS network. MSC is responsible for routing voice calls, as well as other services.
Is it difficult to conduct DoS against MSC and leave mobile subscribers without connection? It depends. We go for SS7 networks.
Modern protocols usually have embedded security features, but not including SS7/SIGTRAN stack. Difficult connection procedures provide access control for SS7 signal networks, and at the same time, are expensive and mostly red-tape. But convergent IP networks allows us to access SS7 far easier. And this leads to a security threat as an attacker could send signal messages in SS7 networks, as well as intercept and modify the messages on his/her own way.
read more.......http://blog.ptsecurity.com/2014/04/mobile-switching-center-dos.html
Is it difficult to conduct DoS against MSC and leave mobile subscribers without connection? It depends. We go for SS7 networks.
Modern protocols usually have embedded security features, but not including SS7/SIGTRAN stack. Difficult connection procedures provide access control for SS7 signal networks, and at the same time, are expensive and mostly red-tape. But convergent IP networks allows us to access SS7 far easier. And this leads to a security threat as an attacker could send signal messages in SS7 networks, as well as intercept and modify the messages on his/her own way.
read more.......http://blog.ptsecurity.com/2014/04/mobile-switching-center-dos.html