Fairbanks FB3000 Kernel Program Operators Manual - Manual (Page 64)

Appendix VII: SOCKS Information
04/12 64 51146 Rev. 3
APPENDIX VII: SOCKS INFORMATION, CONTINUED
Server response:
Field 1: SOCKS protocol version, 1 byte (0x05 for this version).
Field 2: Status, 1 byte:
─ 0x00 = Request granted.
─ 0x01 = General failure.
─ 0x02 = Connection not allowed by ruleset.
─ 0x03 = Network unreachable.
─ 0x04 = Host unreachable.
─ 0x05 = Connection refused by destination host.
─ 0x06 = TTL expired.
─ 0x07 = Command not supported / protocol error.
─ 0x08 = Address type not supported.
Field 3: Reserved, must be 0x00.
Field 4: Address type, 1 byte:
─ 0x01 = IPv4 address.
─ 0x03 = Domain name.
─ 0x04 = IPv6 address.
Field 5: Destination address of :
─ 4 bytes for IPv4 address.
─ 1 byte of name length followed by the name for Domain name.
─ 16 bytes for IPv6 address.
Field 6: Network byte order port number, 2 bytes.