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Namecheap DDNS not updating on v18.5

Dreamcatcher

Hello,

I've updated all our firewalls to v18.5.1, some of them use Namecheap as DDNS provider. One of them has problems now to update the record. Under "failure reason" it shows "noconnect". I've deleted the entry and recreated it but that didn't help. As soon as I downgrade the firewall to v18.0.5 it is working again. What can I do? It's not a problem with v18.5.1 in general, since I have other firewalls working with Namecheap on that version.



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  • FormerMember
    0 FormerMember

    Hi ,

    Thank you for reaching out to Sophos Community.

    Request to follow the steps below and share session output here on in PM.

    ==> Login to SSH > 5. Device Management > 3. Advanced Shell

    Sophos uses ddc service for Dynamic DNS client service.

    => Check service status after upgrading firmware to v18.5.1

    # service -S | grep ddc

    => Run the below command and then try to create/update DDNS after running

    # tail -f /log/ddc.log

  • 0

    Hey,

    thanks for the reply. This is what I get in the log:

    WARNING:  cannot connect to dynamicdns.park-your-domain.com:443 socket: IO::Socket::SSL: SSL connect attempt failed error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed SSL connect attempt failed error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed

  • FormerMember
    0 FormerMember in reply to Dreamcatcher

    Hi ,

    Ensure that date and time are correct on the firewall.

    Dreamcatcher said:
    WARNING:  cannot connect to dynamicdns.park-your-domain.com:443 socket: IO::Socket::SSL: SSL connect attempt failed error

    Request to generate a packet capture file by following the below article.

    Sophos Firewall: Create and download a packet capture

    Search for heading: 'Starting a packet capture using Advanced Shell'

    => Use the below string in Step 5 of 'Starting a packet capture using Advanced Shell'.

    console> tcpdump filedump 'host dynamicdns.park-your-domain.com -s

    => After running the above command, try to add/update DynDNS.

    => Download the tcpdump.pcap file and share it in PM.

  • 0

    Hey,

    if I enter this command  -> tcpdump filedump 'host dynamicdns.park-your-domain.com -s it is not working. No capture file is created and console is just showing >

  • FormerMember
    0 FormerMember in reply to Dreamcatcher

    Hi ,

    You need to first run the below command and then run the tcpdump string.

    XG_SFOS 18.5.1 MR-1-Build304# cish
    console>
    console> tcpdump filedump 'host dynamicdns.park-your-domain.com -s0
    tcpdump: listening on any, link-type LINUX_SLL (Linux cooked v1), capture size 262144 bytes

  • 0

    Any status/update for this? I seem to be having the same problem. I did not have namecheap DDNS configured previously, but have the same status and (lack of) functionality when setting it up in 18.5.1.

  • FormerMember
    0 FormerMember in reply to S S2

    Hi ,

    Could you please follow the steps suggested in above comments and share the session output here or in PM?

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