# FAQ

Last validated: Aug 22, 2025

## [Getting started](/content/docs/reference/faq#getting-started/index.html)

- [What is Tailscale?](/content/docs/concepts/what-is-tailscale/index.html)
- [What is a tailnet?](/content/docs/concepts/tailnet/index.html)
- [What are these `100.x.y.z` addresses?](/content/docs/concepts/tailscale-ip-addresses/index.html)

## [Deploying Tailscale](/content/docs/reference/faq#deploying-tailscale/index.html)

- [Can I use Tailscale alongside other VPNs?](/content/docs/reference/faq/other-vpns/index.html)
- [I can't install Tailscale. How can I connect?](/content/docs/reference/devices-without-tailscale/index.html)
- [What firewall ports should I open to use Tailscale?](/content/docs/reference/faq/firewall-ports/index.html)

## [Reliability](/content/docs/reference/faq#reliability/index.html)

- [What happens if the coordination server is down?](/content/docs/reference/coordination-server-down/index.html)
- [Is my traffic routed through your servers?](/content/docs/concepts/traffic-routing-through-tailscale/index.html)

## [Security and privacy](/content/docs/reference/faq#security-and-privacy/index.html)

- [Can Tailscale decrypt my traffic?](/content/docs/concepts/can-tailscale-decrypt-traffic/index.html)
- [If I use Tailscale on my work device, will my personal devices be visible to my co-workers?](/content/docs/concepts/device-visibility/index.html)

## [Other](/content/docs/reference/faq#other/index.html)

- [Does Tailscale support IPv6?](/content/docs/concepts/ipv6/index.html)
- [Why is MagicDNS fetching records on port `433`?](/content/docs/reference/faq/magicdns/index.html)
- [Do admin console sessions expire?](/content/docs/reference/admin-console-session-expiry/index.html)
- [What is STUN?](/content/docs/reference/stun-protocol/index.html)