ser2net ubuntu 설치 방법

아래의 command를 순서대로 입력하여 ser2net application을 다운로드 한다.

jwsung@jwsung-ubuntu:~$ add-apt-repository ppa:eugenesan/ppa

jwsung@jwsung-ubuntu:~$ sudo apt-get update

jwsung@jwsung-ubuntu:~$ sudo apt-get install ser2net -y

시리얼 연결 케이블은 USB to RS232를 사용 하였다.

케이블을 연결하기 전과 연결 후 lsusb 명령으로 device ID를 확인한다.

jwsung@jwsung-ubuntu:~$ lsusb

Bus 001 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 002: ID 248a:8566

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

jwsung@jwsung-ubuntu:~$

jwsung@jwsung-ubuntu:~$ lsusb

Bus 001 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 002: ID 248a:8566

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

jwsung@jwsung-ubuntu:~$

device에 대한 상세한 정보는 아래 command로 확인 가능하다.

jwsung@jwsung-ubuntu:~$ lsusb -v -d 0403:6001

Bus 003 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC

Couldn't open device, some information will be missing

Device Descriptor:

  bLength                18

  bDescriptorType         1

  bcdUSB               2.00

  bDeviceClass            0 (Defined at Interface level)

  bDeviceSubClass         0

  bDeviceProtocol         0

  bMaxPacketSize0         8

  idVendor           0x0403 Future Technology Devices International, Ltd

  idProduct          0x6001 FT232 Serial (UART) IC

  bcdDevice            6.00

  iManufacturer           1

  iProduct                2

  iSerial                 3

  bNumConfigurations      1

  Configuration Descriptor:

    bLength                 9

    bDescriptorType         2

    wTotalLength           32

    bNumInterfaces          1

    bConfigurationValue     1

    iConfiguration          0

    bmAttributes         0xa0

      (Bus Powered)

      Remote Wakeup

    MaxPower               44mA

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        0

      bAlternateSetting       0

      bNumEndpoints           2

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass    255 Vendor Specific Subclass

      bInterfaceProtocol    255 Vendor Specific Protocol

      iInterface              2

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x81  EP 1 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0040  1x 64 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x02  EP 2 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0040  1x 64 bytes

        bInterval               0

jwsung@jwsung-ubuntu:~$

jwsung@jwsung-ubuntu:~$ sudo modprobe usbserial vendor=0x0403 product=0x6001

USB serial device의 이름을 확인한다.

jwsung@jwsung-ubuntu:~$ dmesg | tail -n 20

[ 4356.040341] r8169 0000:04:00.0 eth1: link down

[ 4360.004844] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready

[ 8333.972013] usb 3-2: new full-speed USB device number 2 using uhci_hcd

[ 8334.172050] usb 3-2: New USB device found, idVendor=0403, idProduct=6001

[ 8334.172054] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[ 8334.172057] usb 3-2: Product: USB Serial Converter

[ 8334.172060] usb 3-2: Manufacturer: FTDI

[ 8334.172062] usb 3-2: SerialNumber: FTFWAUT4

[ 8334.223674] usbcore: registered new interface driver usbserial

[ 8334.223684] usbcore: registered new interface driver usbserial_generic

[ 8334.223692] usbserial: USB Serial support registered for generic

[ 8334.263114] usbcore: registered new interface driver ftdi_sio

[ 8334.263128] usbserial: USB Serial support registered for FTDI USB Serial Device

[ 8334.263193] ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected

[ 8334.263216] usb 3-2: Detected FT232RL

[ 8334.263218] usb 3-2: Number of endpoints 2

[ 8334.263219] usb 3-2: Endpoint 1 MaxPacketSize 64

[ 8334.263221] usb 3-2: Endpoint 2 MaxPacketSize 64

[ 8334.263223] usb 3-2: Setting MaxPacketSize 64

[ 8334.266087] usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0

jwsung@jwsung-ubuntu:~$

따로 help string을 위한 option은 없는 거 같은데 그냥 -h 해도 나올만한건 다 나온다 -.-

jwsung@jwsung-ubuntu:~$ ser2net -h

Invalid option: '-h'

ser2net: Valid parameters are:

  -c <config file> - use a config file besides /etc/ser2net.conf

  -C <config line> - Handle a single configuration line.  This may be

     specified multiple times for multiple lines.  This is just like a

     line in the config file.  This disables the default config file,

     you must specify a -c after the last -C to have it read a config

     file, too.

  -p <controller port> - Start a controller session on the given TCP port

  -P <file> - set location of pid file

  -n - Don't detach from the controlling terminal

  -d - Don't detach and send debug I/O to standard output

  -u - Disable UUCP locking

  -b - Do CISCO IOS baud-rate negotiation, instead of RFC2217

  -v - print the program's version and exit

  -s - specify a default signature for RFC2217 protocol

jwsung@jwsung-ubuntu:~$

ser2net 프로그램 설치와 USB serial device 설정이 끝났으면  /etc/ser2net.conf  설정 파일을 연다.

jwsung@jwsung-ubuntu:~$ sudo vim /etc/ser2net.conf

파일을 열면 아래와 같이 2001 ~ 3001 port로 예제 비스무리한 것이 이미 들어가 있다. 파일에 각 항목에 대해 친절하게 설명 되어 있지만 대충 처음에서 부터 

사용할 포트 : 사용할 프로토콜 : 세션 타임아웃 값 : 디바이스 : baud rate 순으로 이어 진다.

본인이 추가한 설정은 /dev/ttyUSB0 에 대해 텔넷으로 10001포트를 쓰며 session timeout은 0 (무한), baud rate는 115200 로 설정 하였다.

2000:telnet:600:/dev/ttyS0:9600 8DATABITS NONE 1STOPBIT banner

2001:telnet:600:/dev/ttyS1:9600 8DATABITS NONE 1STOPBIT banner

3000:telnet:600:/dev/ttyS0:19200 8DATABITS NONE 1STOPBIT banner

3001:telnet:600:/dev/ttyS1:19200 8DATABITS NONE 1STOPBIT banner

10001:telnet:0:/dev/ttyUSB0:115200 8DATABITS NONE 1STOPBIT banner

아래와 같이 10000번 포트를 controller port로 지정 한다. 이후 10000번 port로 접속하면 baud rate나 각 session의 disconnect 등을 수행할 수 있게 된다.

jwsung@jwsung-ubuntu:~$ sudo ser2net -p 10000

원격지에서 PC IP의 10001 port로 telnet 접속을 하였을 때 serial 로 연결한 console 화면이 보이는 것을 볼 수 있다. 

ser2net port 10001 device /dev/ttyUSB0 [115200 N81] (Debian GNU/Linux)

Login: admin

Password:

ser2net의 restart가 필요한 경우 아래 command를 수행 한다.

jwsung@jwsung-ubuntu:~$ sudo /etc/init.d/ser2net restart

* Restarting Serial port to network proxy ser2net                                                                        [ OK ]

jwsung@jwsung-ubuntu:~$

참고 :

http://techtinkering.com/2013/04/02/connecting-to-a-remote-serial-port-over-tcpip/

https://www.linuxhelp.com/how-to-install-ser2net-on-ubuntu-17-04/