Data Domain: Error message in Avamar GUI while adding DDR running 6.0 release "Data Domain system is unreachable"
Summary: Error message in Avamar GUI while adding DDR running 6.0 release "Data Domain system is unreachable"
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Symptoms
Open TCP port 7 as a destination port on DDR to allow Avamar to connect.
After upgrading to DD 6.0, unable to add DD to Avamar / Unable to reach DD running DDOS 6.0 from Avamar.
Cause
TCP port 7 as a destination port on DDR is blocked.
Resolution
To open TCP port 7 as a destination port on DDR and allow Avamar to connect follow the commands
# net filter start
Net filter started.
# se net filter add operation allow protocol tcp ports 7
Net filter entry added.
#se net filter add operation allow protocol udp ports 7
Net filter entry added.
# net filter stop
** All user-defined rules will be lost and the net filter module will be unloaded.
Do you want to proceed? (yes|no) [no]: yes
Net filter stopped.
User should be able to add DD to Avamar.
Affected Products
Data DomainProducts
Data Domain, DD OS, DD OS 6.0Article Properties
Article Number: 000050116
Article Type: Solution
Last Modified: 29 Jul 2025
Version: 4
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