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You need to be careful because in the network world, a specific IP may not correspond to a single user, but could be a server with many users, or even an entire external company connecting to you from behind a firewall, using a source NAT IP (a standard practice).
The doc should advise on this potential impact.
People just need to know their users. Even internally, virtual on-prem cloud services may use a source NAT to represent many internal servers/workstations.
Could you please provide details on the entries in PROFILE tables to achieve:
"Currently, you can block an IP address from being able to CONNECT to Db2. Enabling a Db2 MONITOR CONNECTIONS system profile to prevent any connections into Db2 originating from the offending IP."
Would there be different message DSNT771I be issued when the offending IP try to connect every minute in our case it's from a cloud app server:
EXCEPTION
Fail the connection request and issue the console message.
DSNT771I for all active profiles, every 5 minutes at most
Hi, I see that this is now 'Planned for future release' . Are there any estimated timescales for this. We have the very same issue and it causes us big problems in development with test severs bombarding Db2 with requests from revoked/invalid ID's producing millions of line of output. Thanks
Thanks Janet.
It works but it blocks all the users coming from the IP address. When I filter just by a specific USER for that IP, the profile was rejected. For majority of our DSNL030I messages, the same IP address is used by other users coming from that server. I only want to disallow the connection coming from the specific AUTHID and allow other valid users coming from that IP address.
Dear Eduardo, Thank you for submitting this Aha Idea. We are pleased to inform you this functionality already exists.
Currently, you can block an IP address from being able to CONNECT to Db2. Enabling a Db2 MONITOR CONNECTIONS system profile to prevent any connections into Db2 originating from the offending IP.
Sincerely,
The Db2 for z/OS Team
There is already a way to block. You an make entries in DSN_PROFILE_TABLE and DSN_PROFILE_ATTRIBUTES to add exception for thread/connection.