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Managed Services

FIREWALL - SECURITY

Secure VoIP protection with professional firewall configuration and active fraud prevention.

SLine firewall and security services for VoIP infrastructure

Why is a firewall essential for VoIP?

Security and stability are of critical importance in VoIP communications. A professionally configured firewall protects your voice infrastructure against attacks, fraud, and outages, ensuring reliable connections in every situation.

VoIP platforms are constantly targeted by SIP scans and abuse attempts. A firewall blocks unauthorized access, reduces malicious traffic, and prevents costly phone fraud before it occurs.

At the same time, it improves call quality and system stability through controlled traffic and protection of critical servers. For VoIP providers, a firewall is not an add-on — it is the foundation of a secure and high-performance communications platform.

What SLine Offers

  • IP whitelisting
  • Fail2Ban
  • SIP rate limiting
  • DDoS protection
  • Geo-blocking
  • Fraud monitoring
  • CPS limits

Pricing

One-time setup

EUR 99

Per server/month

EUR 49

All features included: IP whitelisting, Fail2Ban, SIP rate limiting, DDoS protection, Geo-blocking, Fraud monitoring, CPS limits.