Can't connect Duet Ethernet to company network



  • Hi all,

    I have a rather specific problem bringing my Duet powered 3D printer into our companys network.

    About my machine:
    Duet Ethernet 1.0
    Firmware 1.20
    Web Interface Version: 1.20
    (a.k.a. never change a running system)

    config.g
    Networking section in the config.g.:

    ; Network
    M550 PBender HTP                       ; Set machine name
    ; M551 PHTPP455W0RD                   ; Set password
    M540 PBE:EF:DE:AD:FE:ED             ; Set MAC address
    ; M552 P192.168.2.142 S1                    ; Enable network and set fixed IP Adresse (std: acquire dynamic address via DHCP)
    M552 P10.6.221.192 S1			; Enable network and set fixed IP Address: igus Druckernetzwerk
    M553 P255.255.255.0			; Set Netmask
    M554 P10.6.221.1			; Set Gateway: igus Druckernetzwerk
    
    M586 P0 S1                          ; Enable HTTP
    M586 P1 S0                          ; Disable FTP
    M586 P2 S0                          ; Disable Telnet
    

    I've been using the printer in the past connected to a "private" router that I had it attached to, with a little private Wifi that I could connect to with my notebook. However, I've moved the other printers to the company network and would like to do the same with the Duet machine.
    When connected to the "private" router (the lines in the config.g that are commented out), I had it connect with a fixed IP. It also worked (and still does) when setting networking to DHCP with M552 P0.0.0.0.

    Our admin needed the MAC addresses and gave me the IPs for my 4 machines. I set the IP, netmask and gateway according to the info I got from him. He said he double checked IP and MAC combination. However, the Duet can't even be ping'd.... At startup, on the panelDue it says "network enabled" and lists the given IP, but it cannot be reached from outside. There is no DHCP server in this network, so I can't just let it do the work unfortunately.

    On the other 3 machines (all Ultimakers) which are in the same network I set fixed IPs, gateway and netmask and they can be reached without problem, so I'm more or less ruling out issues on the network side.

    Am I missing any setting that might need to be done for the Duet in my network? HTTP ports etc?
    Thanks in advance for your ideas....

    If you need more info, just let me know.

    Best regards, Niklas



  • @sonderzug said in Can't connect Duet Ethernet to company network:

    M540 PBE:EF:DE:AD:FE:ED

    Is the only thing that sticks out at first glance; why set a fixed MAC address instead of just running M540 to find the MAC address that is programmed to the board/chip? Saves you maintaining a set of MAC addresses for different boards.

    However I don't think that is your problem, unless your company network filters out non globally unique MAC addresses.

    (👇 if that doesn't mean the same thing, then that is what i was getting at - BE:EF:DE:AD:FE:ED is a locally administered address)


  • administrators

    @bearer said in Can't connect Duet Ethernet to company network:

    However I don't think that is your problem, unless your company network filters out non globally unique MAC addresses.

    Or filters out MAC addresses with the "locally administered" bit set.



  • Hi bearer and David,

    thanks for the very quick reply, as usual!

    We figured it out... our admin says it was not about filtering the MAC but it was not allowed in the security guideline.... not sure if this means the same thing - my networking knowledge is fully exhausted at this point - but he says he has lowered the security guidelines for this specific port and MAC adress and now it works.

    Note that this was after I omitted the MAC I've had in the config.g and reverted to the native MAC, still without success.

    thanks again,
    Best regards, Niklas



  • I must admitted I LOL'ed a little when I read that.

    it sure sounds like your admin is saying "I've had my coffe now and it should work" 😛

    Anyways, all that ends well and so on 🙂


  • Moderator

    @bearer said in Can't connect Duet Ethernet to company network:

    it sure sounds like your admin is saying "I've had my coffe now and it should work"

    Perhaps a BOFH?


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