--- title: "Network & Firewall" slug: "network-firewall" type: "index" canonical: "docs.ucstack.io/network-firewall" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.ucstack.io/llms.txt > Use this file to discover all available pages before exploring further. # Network & Firewall 1 sub category | 4 articles ## [Required Firewall Configuration](https://docs.ucstack.io/docs/firewall-recommendations.md) Updated on 2026-09-18 | Published on 2025-07-21 To ensure the seamless operation and reliability of our voice services (available via phone, softphone, and web interfaces), correct firewall and network configuration is essential. This guide... ## [Troubleshooting Network & Connection Issues](https://docs.ucstack.io/docs/troubleshooting-basics-networking-and-lan-issues.md) Updated on 2026-02-23 | Published on 2025-07-16 Introduction If you're experiencing choppy voice, one-way audio, or cannot make calls at all , the issue may lie within your Local Area Network (LAN). This includes your router, cables, and Wi-Fi... ## [Responding to Security Concerns](https://docs.ucstack.io/docs/security.md) Updated on 2026-03-02 | Published on 2025-07-16 Introduction If you suspect your VoIP account has been compromised, or you notice suspicious activity like unexpected phone deregistration, unknown calls in your history, or trouble logging in , it's... ## [How to Run a Network Diagnostic Test](https://docs.ucstack.io/docs/how-to-run-a-network-diagnostic-test.md) Updated on 2026-07-13 | Published on 2026-07-13 Overview We are committed to providing you with the best possible VoIP experience. As part of this commitment, your support team may ask you to run our Network Diagnostic Tool . This is a quick, safe,... ## [Router-Specific Configurations](https://docs.ucstack.io/docs/router-specific-configurations.md) 8 articles