Security 1

SIP authentication hardening, IP ACLs, fail2ban patterns, TLS configuration, and toll-fraud prevention.

Last updated August 22, 2026

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Features 10 Configuration 10 Call Handling 8 Integrations 6 IVR 5 Routing 3

Version: All Asterisk 18+

Tags: All security 4 pjsip 3 tls 2 certificates 2 dialplan 1 acl 1 beginner 1 openssl 1 letsencrypt 1 pin 1 disa 1 toll-fraud 1

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PJSIP IP ACL

Restrict SIP registration and call traffic to trusted IP ranges using PJSIP ACLs, blocking scanners and brute-force attacks before authentication is a...

Snippets pjsip security acl