A torrent comes from other people's computers, not from one website. That changes what you can trust and what others can see. This page says plainly what GDM does and what it doesn't. The switches it mentions are in Tasks → Torrent settings....
其他人可以看到什么
- Your IP address. Everyone sharing the same torrent sees it, as do its trackers and the DHT (the network peers use to find each other). That's how BitTorrent works, and no setting in GDM changes it. To hide your address, use a VPN on your whole computer.
- What you download, on your local network. GDM tells other computers on your network which torrents it has, so they can share faster. On public Wi-Fi, turn off Find peers on the local network.
- That you use GDM. Peers see the name "MisterDownloadManager" and its major version, not the exact build.
GDM's torrents don't use encryption (sometimes called "protocol encryption"). That kind of encryption only hides the traffic from simple filters. It never hides who you are, so GDM doesn't claim to offer it. Some peers that require it won't connect.
哪些内容会连接到您的计算机
GDM starts its torrent engine the first time a torrent needs it. With Stop the torrent engine when no torrent is running on (the default), it stops again a minute after no torrent is running or sharing. While it runs, other peers can connect to GDM, and GDM asks your router to forward its port (UPnP). Windows may ask whether to allow GDM through the firewall: allow it on private networks only.
This is the only part of GDM that waits for connections from outside. Downloads, GDM's DNS choice (Options → Connection → DNS), its updates and its helpers only connect out, so they never need a firewall exception; the browser extension and the automation API reach GDM on this computer only (127.0.0.1).
在种子设置中，您可以关闭接受传入连接和在路由器上映射端口 (UPnP)，也可以关闭 DHT。下载仍可继续，但有时速度会较慢。设置固定的端口可确保防火墙和路由器规则继续生效。这些更改会在种子引擎下次启动时生效，也就是没有种子运行时。
The torrent engine is written in Rust, which rules out many memory bugs, and GDM checks every piece against the torrent's fingerprint, so a peer can't slip in altered data. GDM keeps the engine up to date with the fixes its authors publish.
跟踪器
A torrent names the trackers GDM asks for peers. GDM doesn't contact a tracker on your own computer or your local network (127.0.0.1, 192.168.…, localhost and the like), so a torrent can't make GDM send requests into the network it sits in. Add trackers... follows the same rule: it refuses such an address and tells you why, rather than keeping one that would never be asked.
A .torrent file fetched from a web address goes through the same checks as one opened from disk, and GDM reads at most 10 MB of it.
阻止地址
Block the addresses in this list takes the address of a public IP blocklist, in the P2P (PeerGuardian) or eMule .dat format, plain or gzipped. GDM downloads it with its own downloader (your Proxy / Socks settings apply), checks it, and fetches it again every 7 days. Peers in it are refused. A list GDM can't read is left out, and the last good one stays. The engine reads the list when it starts.
种子中的文件
- GDM refuses a torrent with file names your system can't write safely, says which name, and writes nothing.
- GDM never writes into a file that's already there without asking.
- 来自种子的文件被标记为从互联网下载，就像浏览器的下载一样。Windows SmartScreen 在程序首次运行前检查它，Office 在受保护视图中打开文档。在 Mac 上，Gatekeeper 检查应用程序。
- 种子可以包含任何内容，任何人都可以制作一个。只打开您信任的人的程序，如有疑问请扫描它们。
代理
GDM's Proxy / Socks settings are for web and FTP downloads. Torrents can use a SOCKS5 one too: set a socks5:// proxy in Options → Proxy / Socks and turn on Use the proxy in Torrent settings. The proxy covers connections to peers and web trackers only, so with it GDM turns off the DHT, local peer discovery, incoming connections and UDP trackers; it opens no UDP socket toward the network at all. If the proxy is gone from Proxy / Socks while that switch is on, torrents don't start rather than go around it.
要将所有流量通过另一个网络路由，请为整台计算机使用VPN。
网络适配器
Options → Proxy / Socks → Network adapter holds GDM's connections to one adapter, usually a VPN's (Options). The torrent engine binds every socket to it: peers (TCP, and through a SOCKS proxy), HTTP and UDP trackers, the DHT and the listening port. On Linux and macOS it binds the adapter itself. On Windows it binds the adapter's address (its IPv4 one when it has one), and Windows sends a packet only through the adapter that has its source address. UPnP and local peer discovery are turned off then, because they talk to the local network rather than through the adapter.
It works as a kill switch. When the adapter disconnects, running torrents stop with "… is not connected; it goes on when it is back", and they start again through the adapter when it is. Until GDM notices (within a second), the engine's sockets are still bound to an address that is gone, so nothing can leave another way. A torrent added while the adapter isn't connected doesn't start, and says why. Tracker names are still looked up by the system's DNS.
报告问题
发现安全问题？请在 GitHub 上私下报告（安全 → 报告漏洞，请参阅SECURITY.md），而不是在公共问题中报告。
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