github/wangyu-udp2raw
1
0
Fork 0
mirror of https://github.com/wangyu-/udp2raw.git synced 2025-04-05 03:29:35 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'wangyu-:unified' into unified

Browse Source
This commit is contained in:
Yao Fei 2022-08-23 14:07:50 +08:00 committed by GitHub
commit b35452ad9c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
README.md
View File

@ -26,7 +26,7 @@ For Windows and MacOS users, use the udp2raw in [this repo](https://github.com/w
### Send/Receive UDP Packets with ICMP/FakeTCP/UDP headers
ICMP/FakeTCP headers help you bypass UDP blocking, UDP QOS or improper UDP NAT behavior on some ISPs. In ICMP header mode,udp2raw works like an ICMP tunnel.
UDP headers are also supported. In UDP header mode, it behaves just like a normal UDP tunnel, and you can just make use of the other features (such as encryption, anti-replay, or connection stalization).
UDP headers are also supported. In UDP header mode, it behaves just like a normal UDP tunnel, and you can just make use of the other features (such as encryption, anti-replay, or connection stabilization).
### 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 a few TCP options such as: `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.
@ -38,7 +38,7 @@ In FakeTCP header mode,udp2raw simulates 3-way handshake while establishing a co
[Notes on encryption](https://github.com/wangyu-/udp2raw-tunnel/wiki/Notes-on-encryption)
### Failure Dectection & Stablization (Connection Recovery)
### Failure Dectection & Stabilization (Connection Recovery)
Conection failures are detected by heartbeats. If timed-out, client will automatically change port number and reconnect. If reconnection is successful, the previous connection will be recovered, and all existing UDP conversations will stay vaild.
For example, if you use udp2raw + OpenVPN, OpenVPN won't lose connection after any reconnect, **even if network cable is re-plugged or WiFi access point is changed**.
@ -83,7 +83,7 @@ Now,an encrypted raw tunnel has been established between client and server throu
### Note
To run on Android, check [Android_Guide](/doc/android_guide.md)
`-a` option automatically adds an iptables rule (or a few iptables rules) for you, udp2raw relys on this iptables rule to work stably. Be aware you dont forget `-a` (its a common mistake). If you dont want udp2raw to add iptables rule automatically, you can add it manually(take a look at `-g` option) and omit `-a`.
`-a` option automatically adds an iptables rule (or a few iptables rules) for you, udp2raw relies on this iptables rule to work stably. Be aware you dont forget `-a` (its a common mistake). If you dont want udp2raw to add iptables rule automatically, you can add it manually(take a look at `-g` option) and omit `-a`.
# Advanced Topic

2
doc/README.zh-cn.md
View File

@ -161,7 +161,7 @@ other options:
如果要最大的安全性建议用aes128cbc+hmac_sha1。如果要运行在路由器上，建议用xor+simple，可以节省CPU。但是注意xor+simple只能骗过防火墙的包检测，不能防止真正的攻击者。
### `--seq-mode`
facktcp模式并没有模拟tcp的全部。所以理论上有办法把faketcp和真正的tcp流量区分开来（虽然大部分ISP不太可能做这种程度的包检测）。seq-mode可以改变一些seq ack的行为。如果遇到了连接问题，可以尝试更改。在我这边的移动线路用3种模式都没问题。
faketcp模式并没有模拟tcp的全部。所以理论上有办法把faketcp和真正的tcp流量区分开来（虽然大部分ISP不太可能做这种程度的包检测）。seq-mode可以改变一些seq ack的行为。如果遇到了连接问题，可以尝试更改。在我这边的移动线路用3种模式都没问题。
### `--keep-rule`
定期主动检查iptables，如果udp2raw添加的iptables规则丢了，就重新添加。在一些iptables可能会被其他程序清空的情况下(比如梅林固件和openwrt的路由器)格外有用。