Update README.md

README.md

@@ -495,29 +495,11 @@ The latest shadowsocks-libev has provided a *redir* mode. You can configure your
     # Start the shadowsocks-redir
     ss-redir -u -c /etc/config/shadowsocks.json -f /var/run/shadowsocks.pid
 
-## Shadowsocks over KCP
-
-It's quite easy to use shadowsocks and [KCP](https://github.com/skywind3000/kcp) together with [kcptun](https://github.com/xtaci/kcptun).
-
-The goal of shadowsocks over KCP is to provide a fully configurable, UDP based protocol to improve poor connections, e.g. a high packet loss 3G network.
-
-### Setup your server
-
-```bash
-server_linux_amd64 -l :21 -t 127.0.0.1:443 --crypt none --mtu 1200 --nocomp --mode normal --dscp 46 &
-ss-server -s 0.0.0.0 -p 443 -k passwd -m chacha20 -u
-```
-
-### Setup your client
-
-```bash
-client_linux_amd64 -l 127.0.0.1:1090 -r <server_ip>:21 --crypt none --mtu 1200 --nocomp --mode normal --dscp 46 &
-ss-local -s 127.0.0.1 -p 1090 -k passwd -m chacha20 -l 1080 -b 0.0.0.0 &
-ss-local -s <server_ip> -p 443 -k passwd -m chacha20 -l 1080 -U -b 0.0.0.0
-```
 
 ## Security Tips
 
+To avoid users accessing localhost of your server, please add `--acl acl/server_block_local.acl` to your server command.
+
 Although shadowsocks-libev can handle thousands of concurrent connections nicely, we still recommend
 setting up your server's firewall rules to limit connections from each user: