Security 2

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

Last updated June 03, 2026

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Configuration 10 Features 9 Call Handling 7 Integrations 6 IVR 4 Routing 3
Version: All Asterisk 18+
Tags: All pjsip 3 security 2 tls 2 certificates 2 acl 1 beginner 1 openssl 1 letsencrypt 1
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TLS Certificate Generation

Generate self-signed TLS certificates for Asterisk using the ast_tls_cert script -- create a private CA, server certificates, and client certificates ...

1 Snippets Asterisk 18+ pjsip security tls
PJSIP IP ACL

Restrict SIP access to trusted IP ranges using PJSIP access control lists.

Snippets Asterisk 18+ pjsip security acl