Technical Guides

Practical infrastructure notes for small private setups. Written from real deployments. No hype.

The same baseline we apply to managed SecureVoice infrastructure.

Start here → new to this? Begin with What actually matters when securing a VPS.

Absolute beginner path: read the VPS guide above first, then continue with Private voice server vs Discord.

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Private voice server vs Discord (small groups)

Privacy posture, control, trade-offs, reliability, and what actually breaks in practice.

Updated: Feb 2026

Read the full comparison →

Discord → Matrix + Mumble (practical migration plan)

A practical rollout: pilot, friction control, roles/permissions, onboarding, and voice stability.

Updated: Feb 2026

Read the full migration guide →

Self-host a private Mumble server (Ubuntu)

Install, lock down, and run a small Mumble server with clear, reversible configuration.

Updated: Feb 2026

Read the full setup guide →

Ubuntu VPS hardening checklist

Baseline hardening for small private deployments: access, updates, firewall alignment, verification.

Updated: Feb 2026

Read the full hardening checklist →

Library

Browse troubleshooting, firewall, DNS, and core setup notes.

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Troubleshooting

MumbleMumble not working? 7-minute triage checklistFast triage sequence before deeper debugging. [full guide →] MumbleServer not reachable (UDP blocked): fix checklistIsolate firewall/DNS/routing issues fast. MumbleIPv6 vs IPv4 reachability (works on one, not the other)DNS A/AAAA records, listening sockets, and firewall alignment.

Networking & Firewalls

DigitalOceanOpen UDP 64738 for Mumble (Cloud Firewall + UFW)Provider firewall + host firewall alignment. Includes config screenshots. HetznerOpen UDP 64738 for Mumble (Cloud Firewall + UFW)Same fix pattern, different panel. Includes config screenshots. UFWAllow SSH + Mumble, block everything elseDefault-deny inbound with 22/tcp + 64738/udp. [short config note] UFWAllow WireGuard, block everything elseDefault-deny inbound with SSH + 51820/udp. [short config note]

DNS

CloudflareDNS for a Mumble subdomain (DNS-only)A/AAAA records, no proxy, verification. Includes config screenshots. [short config note]

Start here & buyer guides

Start hereSecureVoice in 60 secondsFast path: choose setup-only, hardening, or managed hosting. PricingPricing & packages explainedClear scope boundaries, tier fit, and support window. FAQPrivate voice hosting FAQDirect answers to delivery, support, and access questions.

Other core guides

HostingPrivate voice server UK for small groupsWho it fits, hosted vs BYO VPS, and practical boundaries. ComparisonMumble hosting vs self-hosting (BYO VPS)Cost/control/ops trade-offs for small private groups. MigrationMove a friend group from Discord voice to MumbleLow-friction rollout plan with pilot and onboarding. ComparisonWireGuard vs Tailscale for small groupsTrade-offs: friction, reliability, routing, ops burden. OperationsWireGuard vs Tailscale for Mumble VPS admin accessThe practical choice when uptime and recovery speed matter. SizingBest VPS specs for private voice servers (2–20 users)How to size CPU/RAM properly without overspending. SecuritySecuring a VPS: what actually mattersPriority list: reduce exposure, preserve access.

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Last updated: February 2026.