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Updated Securing Public Shadowsocks Server (markdown)

clowwindy 2015-02-02 17:15:19 +08:00
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Securing-Public-Shadowsocks-Server.md

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If you share your server with strangers, you need to be careful.
1. Limit bandwidth
1. [Optimize your server](https://github.com/shadowsocks/shadowsocks/wiki/Optimizing-Shadowsocks)
2. Limit bandwidth
apt-get install wondershaper
# limit bandwidth to 10Mb/10Mb on eth0
wondershaper eth0 10000 10000
2. Prevent ssh password cracking
3. Prevent ssh password cracking
apt-get install denyhosts
3. [Prevent Shadowsocks password cracking](https://github.com/shadowsocks/shadowsocks/wiki/Ban-Brute-Force-Crackers)
4. [Prevent Shadowsocks password cracking](https://github.com/shadowsocks/shadowsocks/wiki/Ban-Brute-Force-Crackers)
4. [Block connection to localhost](https://github.com/shadowsocks/shadowsocks/wiki/Block-Connection-to-localhost)
5. [Block connection to localhost](https://github.com/shadowsocks/shadowsocks/wiki/Block-Connection-to-localhost)
5. Run Shadowsocks server as nonroot user
6. Run Shadowsocks server as nonroot user
sudo useradd ssuser
sudo ssserver [other options] --user ssuser
6. Block traffic to non-HTTP port
7. Block traffic to non-HTTP port
iptables -t filter -m owner --uid-owner ssuser -A OUTPUT -p tcp --dport 80 -j ACCEPT
iptables -t filter -m owner --uid-owner ssuser -A OUTPUT -p tcp --dport 443 -j ACCEPT
iptables -t filter -m owner --uid-owner ssuser -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset
7. Block BitTorrent trackers
8. Block BitTorrent trackers
apt-get install nginx