DLm8500: Supported IP ports over DLm NAT network
Summary: Only certain ports are supported over NAT interface for interfaces to backend storage
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Not all product versions are identified in this article.
Symptoms
Upgrade to DLm 5.5.x or above - certain ports supporting NFS or other protocols not working over NAT IP Address.
Cause
This was by design. The passthru address to the back end storage was only intended for ssh (e.g. putty) or browser access. There was no filtering, though, and some customers were using other services.
Effective in release 5.5, the internal firewall was adjusted to block connections to unallowed ports.
Effective in release 5.5, the internal firewall was adjusted to block connections to unallowed ports.
Resolution
The following ports are allowed through the NAT firewall.
- SSH - port 22
- HTTP - port 80
- HTTPS - port 443
Additional Information
The 1 GB management network on DLm8500 is not meant to support other protocols for transfer such as NFS, CIFS, or FTP.
Note that the following covers this in the 5.5 Release Notes, under "Utilities for Virtuent Systems" as "Fixed issues":
Note that the following covers this in the 5.5 Release Notes, under "Utilities for Virtuent Systems" as "Fixed issues":
- Adjusted firewall to reject connections to unallowed ports which are forwarded to storage.
Affected Products
Disk Library for mainframe DLm8500Article Properties
Article Number: 000210570
Article Type: Solution
Last Modified: 26 Jun 2023
Version: 3
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