Tech/Hardware/USB-32COM-RM
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Notes around https://www.coolgear.com/product/32-port-rs-232-usb-to-serial-adapter as an option for https://freetserv.github.io/
- Cables are documented on Tech/Hardware/Serial
- There is room inside to host a small SBC
Device
- lsusb output
Bus 003 Device 018: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 017: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 015: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 013: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 016: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 014: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 012: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Bus 003 Device 011: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/5p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
|__ Port 5: Dev 53, If 0, Class=Hub, Driver=hub/4p, 480M
ID 05e3:0610 Genesys Logic, Inc. Hub
|__ Port 1: Dev 54, If 0, Class=Hub, Driver=hub/4p, 480M
ID 05e3:0610 Genesys Logic, Inc. Hub
|__ Port 1: Dev 56, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 56, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 56, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 56, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 58, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 58, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 58, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 58, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 60, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 60, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 60, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 60, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 62, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 62, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 62, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 62, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 55, If 0, Class=Hub, Driver=hub/4p, 480M
ID 05e3:0610 Genesys Logic, Inc. Hub
|__ Port 3: Dev 61, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 61, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 61, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 3: Dev 61, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 57, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 57, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 57, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 1: Dev 57, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 63, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 63, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 63, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 4: Dev 63, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 59, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 59, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 59, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
|__ Port 2: Dev 59, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M
ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
Software Setup
The Linux Kernel does a great job of setting up most of the work for us. The dialout group has all the rights needed. So I create a bunch of users for each port with the right group. The forcecommand should make it safe but removing /bin/bash is a todo still.
- Debian Bullseye
- PC Engines APU2
apt install tio mkdir -p /home/ports/.ssh cp /home/lathama/.ssh/authorized_keys /home/ports/.ssh/authorized_keys chown -R root.dialout /home/ports chmod -R g+r /home/ports
cat users.txt port1:*::dialout::/home/ports:/bin/bash port2:*::dialout::/home/ports:/bin/bash port3:*::dialout::/home/ports:/bin/bash port4:*::dialout::/home/ports:/bin/bash port5:*::dialout::/home/ports:/bin/bash port6:*::dialout::/home/ports:/bin/bash port7:*::dialout::/home/ports:/bin/bash port8:*::dialout::/home/ports:/bin/bash port9:*::dialout::/home/ports:/bin/bash port10:*::dialout::/home/ports:/bin/bash port11:*::dialout::/home/ports:/bin/bash port12:*::dialout::/home/ports:/bin/bash port13:*::dialout::/home/ports:/bin/bash port14:*::dialout::/home/ports:/bin/bash port15:*::dialout::/home/ports:/bin/bash port16:*::dialout::/home/ports:/bin/bash port17:*::dialout::/home/ports:/bin/bash port18:*::dialout::/home/ports:/bin/bash port19:*::dialout::/home/ports:/bin/bash port20:*::dialout::/home/ports:/bin/bash port21:*::dialout::/home/ports:/bin/bash port22:*::dialout::/home/ports:/bin/bash port23:*::dialout::/home/ports:/bin/bash port24:*::dialout::/home/ports:/bin/bash port25:*::dialout::/home/ports:/bin/bash port26:*::dialout::/home/ports:/bin/bash port27:*::dialout::/home/ports:/bin/bash port28:*::dialout::/home/ports:/bin/bash port29:*::dialout::/home/ports:/bin/bash port30:*::dialout::/home/ports:/bin/bash port31:*::dialout::/home/ports:/bin/bash port32:*::dialout::/home/ports:/bin/bash
newusers users.txt
cat /etc/ssh/sshd_config.d/serialports.conf Match User port1 PasswordAuthentication no ForceCommand tio /dev/ttyUSB0 Banner none Match User port2 PasswordAuthentication no ForceCommand tio /dev/ttyUSB1 Banner none Match User port3 PasswordAuthentication no ForceCommand tio /dev/ttyUSB2 Banner none Match User port4 PasswordAuthentication no ForceCommand tio /dev/ttyUSB3 Banner none Match User port5 PasswordAuthentication no ForceCommand tio /dev/ttyUSB4 Banner none Match User port6 PasswordAuthentication no ForceCommand tio /dev/ttyUSB5 Banner none Match User port7 PasswordAuthentication no ForceCommand tio /dev/ttyUSB6 Banner none Match User port8 PasswordAuthentication no ForceCommand tio /dev/ttyUSB7 Banner none Match User port9 PasswordAuthentication no ForceCommand tio /dev/ttyUSB8 Banner none Match User port10 PasswordAuthentication no ForceCommand tio /dev/ttyUSB9 Banner none Match User port11 PasswordAuthentication no ForceCommand tio /dev/ttyUSB10 Banner none Match User port12 PasswordAuthentication no ForceCommand tio /dev/ttyUSB11 Banner none Match User port13 PasswordAuthentication no ForceCommand tio /dev/ttyUSB12 Banner none Match User port14 PasswordAuthentication no ForceCommand tio /dev/ttyUSB13 Banner none Match User port15 PasswordAuthentication no ForceCommand tio /dev/ttyUSB14 Banner none Match User port16 PasswordAuthentication no ForceCommand tio /dev/ttyUSB15 Banner none Match User port17 PasswordAuthentication no ForceCommand tio /dev/ttyUSB16 Banner none Match User port18 PasswordAuthentication no ForceCommand tio /dev/ttyUSB17 Banner none Match User port19 PasswordAuthentication no ForceCommand tio /dev/ttyUSB18 Banner none Match User port20 PasswordAuthentication no ForceCommand tio /dev/ttyUSB19 Banner none Match User port21 PasswordAuthentication no ForceCommand tio /dev/ttyUSB20 Banner none Match User port22 PasswordAuthentication no ForceCommand tio /dev/ttyUSB21 Banner none Match User port23 PasswordAuthentication no ForceCommand tio /dev/ttyUSB22 Banner none Match User port24 PasswordAuthentication no ForceCommand tio /dev/ttyUSB23 Banner none Match User port25 PasswordAuthentication no ForceCommand tio /dev/ttyUSB24 Banner none Match User port26 PasswordAuthentication no ForceCommand tio /dev/ttyUSB25 Banner none Match User port27 PasswordAuthentication no ForceCommand tio /dev/ttyUSB26 Banner none Match User port28 PasswordAuthentication no ForceCommand tio /dev/ttyUSB27 Banner none Match User port29 PasswordAuthentication no ForceCommand tio /dev/ttyUSB28 Banner none Match User port30 PasswordAuthentication no ForceCommand tio /dev/ttyUSB29 Banner none Match User port31 PasswordAuthentication no ForceCommand tio /dev/ttyUSB30 Banner none Match User port32 PasswordAuthentication no ForceCommand tio /dev/ttyUSB31 Banner none
systemctl reload sshd