Data Domain Net Filter admin-interface change requires running NIC

Summary: When configuring the admin-interface setting in the Data Domain Net Filter, the selected network interface (NIC) must be in a running state. This ensures uninterrupted access to management services such as SSH and HTTPS. ...

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Symptoms

1) The following net filter command fails with error for invalid state or configuration due to require of viable NIC. 

net filter config set admin-interface error:

**** Failed to update admin-interface for IPv4: ip address check failed for interface <NIC name> 

**** Failed to update admin-interface for IPv4: interface <NIC name> is not RUNNING

**** Failed to update admin-interface for IPv4: interface <NIC name> does not exist

2) net filter admin-interface allows connections to the configured NIC for SSH (22) and HTTPS(443) even if other rules try to prevent the connection attempt.

# net filter config show
Option                 Value   Ports    Clients
--------------------   -----   ------   -----------
IPv4 admin-interface   ethV0   22,443   all clients
IPv6 admin-interface   ethV0   22,443   all clients
--------------------   -----   ------   -----------

3) adminaccess rules would still be honored and prevent authentication if so configured.

# adminaccess show
Service       Enabled   Allowed Hosts
-----------   -------   -------------
ssh           yes       <Your client IPs or ranges>
scp           yes       (same as ssh)
telnet        no        -
ftp           no        -
ftps          no        -
http          no        <Your client IPs or ranges>
https         yes       <Your client IPs or ranges>
web-service   yes       N/A
-----------   -------   -------------

Cause

The admin-interface setting is designed to safeguard management access to the system via SSH and HTTPS. To prevent accidental loss of connectivity, the configuration requires the specified NIC to be in a running state. If the NIC is down or missing, the system blocks the change to avoid misconfiguration.

 

Resolution

To successfully configure the admin-interface:

  1. Ensure the target NIC is in a running state before applying changes.
  2. To restrict access to specific clients: 
    • net filter config set admin-interface <NIC in running state> client <Client IP>

To reset the admin-interface configuration and allow default access via the first available running NIC .

net filter config reset admin-interface

Affected Products

Data Domain
Article Properties
Article Number: 000384571
Article Type: Solution
Last Modified: 30 Oct 2025
Version:  1
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