Fix a typo in README

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Felix Yan 2018-11-10 17:13:38 +08:00 committed by GitHub
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@ -31,7 +31,7 @@ UDP headers are also supported. In UDP header mode, it behaves just like a norma
### Simulated TCP with Real-time/Out-of-Order Delivery
In FakeTCP header mode,udp2raw simulates 3-way handshake while establishing a connection,simulates seq and ack_seq while data transferring. It also simulates following TCP options: `MSS`, `sackOk`, `TS`, `TS_ack`, `wscale`.Firewalls will regard FakeTCP as a TCP connection, but its essentially UDP: it supports real-time/out-of-order delivery(just as normal UDP does), no congestion control or re-transmission. So there wont be any TCP over TCP problem when using OpenVPN.
### Encrpytion, Anti-Replay
### Encryption, Anti-Replay
* Encrypt your traffic with AES-128-CBC.
* Protect data integrity by HMAC-SHA1 (or weaker MD5/CRC32).
* Defense replay attack with an anti-replay window, smiliar to IPSec and OpenVPN.