Does Asterisk support IPsec?
[root@DDCentos53 digium1.6.2]# find . -type f -name ā*.[ch]ā | xargs grep -i ipsec
[root@DDCentos53 digium1.6.2]#
Although there is nothing to stop you setting up ipsec tunnels within the OS that you are using. (Iām not sure that I would expect an application to directly implement it.)