> For the complete documentation index, see [llms.txt](https://kb.nssurge.com/surge-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.nssurge.com/surge-knowledge-base/zh/technotes.md).

# Technotes

- [关于 TCP Fast Open](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/tfo.md)
- [关于 HTTP 协议版本](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/http-protocol-version.md): 该文档综述了各种 HTTP 协议版本的区别，以及 Surge 开启时对 HTTP 协议版本的影响。
- [DNS 的本地与代理解析](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/dns.md)
- [自动类策略组的测试策略](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/testing-group.md): Surge 的自动类策略组的测试策略比较复杂，该文档详细描述了各种情况下的设计行为与原因。
- [不同 REJECT 策略的区别](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/reject.md)
- [关于 User Agent 规则](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/user-agent.md)
- [NAT 类型详解](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/nat-type.md)
- [IPv6 RA Override](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/ipv6-ra.md)
- [VM UDP Fast Path](https://kb.nssurge.com/surge-knowledge-base/zh/technotes/udp-fast-path.md)