Adding target to blacklist.

[Sushma24]

I am new to discovery and while trying quick discovery [ Credential less] on already discovered server which was not getting discovered from past few  months , I encountered this error - Adding target to blacklist. No valid credential found for types [SSH Password,SSH Private Key]. Firewall opening is in place and the credential works fine for other IP's in the subnet.

Is it not contradicting credential less discovery concept , why am I getting this error?.

[Community Alums]

Hi Sushma,

What's happening is natural. As you have seen we classify Network gear with SNMP. In many cases the devices also have SSH ports open along with being responsive with SNMP.

So what is probably happening here is that you do not have the correct read-only string for those devices, thus not classifying with SNMP but yet they told us that they talk SSH so we try that. Work with you FW team to resolve that

Or

You don't have an SNMP classifier for that type of device and when it looks to find a match we don't find one to match and we try SSH as the next option. for that just extend your SNMP SystemOIDs to include that type that will use the OOB Firewall classification.

Side note. As a better practice, be sure to change your Classification priority so that SNMP is tried first over SSH (swap the numbers) so that we never try ssh for network gear thus saving you an error.

And lastly, don't forget to update your patterns for our new Firewall capabilities.

Also, refer to these threads:

https://community.servicenow.com/community?id=community_question&sys_id=006f34d1dbcb2010b1b102d5ca96...

https://community.servicenow.com/community?id=community_question&sys_id=044c3e5e1bde60500b8a9979b04b...

Mark my answer correct & Helpful, if Applicable.

Thanks,
Sandeep

[Sushma24]

Thank you for the detailed information. Will try all the solutions provided.

[Community Alums]

Glad to see my answer helped you, Kindly mark the answer as Correct & Helpful both such that others can get help.

Thanks,
Sandeep

[Rashmika BS]

Were you able to resolve this one?