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热门什么是断网保护？我需要开启它吗？
3 分钟 阅读·更新于 May 20, 2026
当 VPN 断开时，断网保护会阻断全部网络流量，避免真实 IP 意外暴露。
Kill Switch (also called Network Lock) automatically cuts your internet connection if the VPN tunnel drops unexpectedly, ensuring your real IP is never exposed during a VPN interruption.
How it works
Without Kill Switch: if your VPN disconnects mid-session, your device falls back to your regular internet connection — exposing your real IP. With Kill Switch, all internet is blocked until the VPN reconnects or you manually disconnect.
Should you enable it?
- ✅ Enable if: you're torrenting, handling sensitive data, or need guaranteed privacy
- ✅ Enable if: you're in a country with internet restrictions
- ⚠️ Consider skipping if: you need continuous internet even during VPN drops (e.g., active video calls)
- 💡 Use App-Level Kill Switch to only block specific apps (e.g., qBittorrent) rather than all traffic
- 1Open HorizonVPN → Settings → Security
- 2Toggle Kill Switch to On
- 3Optionally: click App Kill Switch to select specific apps to block
On Linux, Kill Switch is implemented via iptables rules that persist even if the app crashes. Run horizonvpn killswitch status to check the current state.
kill switchsecuritynetwork lockip leak
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