Better SIP Security on Asterisk: How To Secure Asterisk

Seven Easy Steps to Better SIP Security on Asterisk: 1) Don’t accept SIP authentication requests from all IP addresses. Use the “permit=” and “deny=” lines in sip.conf to only allow a reasonable subset of IP addresess to reach each listed extension/user in your sip.conf file. Even if you accept inbound calls from “anywhere” (via [default]) … Read more