> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/openbsd/networking-and-daemons.md).

# 第四部分 网络与守护进程

第四部分介绍网络配置，以及提供核心网络服务的守护进程的管理。内容涵盖防火墙、串口通信和服务分类。

本部分包含：

* [PF](/openbsd/networking-and-daemons/pf.md) OpenBSD 包过滤器的概览，及其在流量过滤、NAT、重定向和日志记录方面的作用。详细章节组织在 PF 部分之内。
* [串口通信](/openbsd/networking-and-daemons/serial.md) 串口、终端及相关工具的配置与使用。
* [服务](/openbsd/networking-and-daemons/services.md) 所有服务类别及其各自守护进程指南的索引。

服务类别：

* [数据库](/openbsd/networking-and-daemons/services/database-services.md) 数据库服务器的配置与管理。
* [目录](/openbsd/networking-and-daemons/services/directory-services.md) 目录与认证服务。
* [文件](/openbsd/networking-and-daemons/services/file-services.md) 网络文件服务与共享协议。
* [文件同步](/openbsd/networking-and-daemons/services/sync-services.md) 同步与镜像工具。
* [FTP 服务](/openbsd/networking-and-daemons/services/ftp-services.md) FTP 守护进程及用于文件传输与分发的相关功能。
* [日志](/openbsd/networking-and-daemons/services/logging-services.md) 使用本地设施与远程转发的系统日志。
* [邮件](/openbsd/networking-and-daemons/services/mail-services.md) 邮件传输、投递与过滤。
* [消息](/openbsd/networking-and-daemons/services/messaging-services.md) 消息代理与跨服务通信。
* [监控](/openbsd/networking-and-daemons/services/monitoring-services.md) 主机与服务监控及指标采集。
* [名称](/openbsd/networking-and-daemons/services/name-services.md) 权威与递归 DNS 服务。
* [网络服务](/openbsd/networking-and-daemons/services/networking-services.md) DHCP、路由通告和 SLAAC 的辅助守护进程。
* [远程访问](/openbsd/networking-and-daemons/services/remote-access-services.md) 安全的远程管理。
* [时间](/openbsd/networking-and-daemons/services/time-services.md) 网络时间同步与时钟校准。
* [Web](/openbsd/networking-and-daemons/services/web-services.md) HTTP 服务器、TLS 终止与反向代理。


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