Forest33 / tapir

VPN server & client

Tapir

VPN server & client

Build and install server

git clone https://github.com/forest33/tapir
cd tapir
docker-compose build
docker-compose run --rm tapir-server init -host SERVER_HOSTNAME_OR_IP
docker-compose up -d

Creating a user and retrieve the client configuration

docker-compose run --rm tapir-server create -name USERNAME -password PASSWORD
docker-compose run --rm tapir-server export -name USERNAME > profile.tapir

Speed test results

OpenVPN

Tapir

Packet format

| T | F |      PSN      |      SID     |   L   |
|---|---|---------------|--------------|-------|
|                                              |
|                   Payload                    |
|                                              |

T - packet type, 8 bits
F - flags, 8 bits
PSN - packet serial number, 32 bits
SID - session idenificator, 32 bits
L - payload length, 16 bits

Packet types

• 0x01 - authentication
• 0x02 - handshake
• 0x03 - data
• 0x04 - keepalive
• 0x05 - reset

Flags

• 0x00 - normal packet
• 0x01 - error
• 0x02 - request
• 0x04 - acknowledgement
• 0x08 - LZ4 compression
• 0x10 - LZO compression
• 0x20 - ZSTD compression

Authentication request

|L|      N       |L|      P       | 
|-|--------------|-|--------------|

L - field length
N - user name
P - password

Authentication response

| S |L|      LA      |L|      RA      | 
|---|-|--------------|-|--------------|

S - session idenificator, 32 bits
L - field length
LA - local IP address
RA - remote IP address

Handshake request/response

|L|      K       |         
|-|--------------|

L - field length
K - public key