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NMS300 config backup with telnet disabled?
Hello everybody, we would like to use NMS300 to save the config of our 40 Netgear Switches automatically every night, but it seems that this requires telnet to be enabled on all switches. Is this...
Hi cp42,
Your testing result is right, telnet is required when do M4100 backup/restore (M4100 is a special case). However your idea (using encrypted protocol to do backup) is a very good. What you can do is to post suggestions and ideas at the Idea Exchange board. Adding kudos to the ideas will help as development team will be reviewing the post that has the most kudos for considering it to add to the product's future release.
Thank you again.
Hi cp42,
Thanks for your follow-up feedback.
I guess you associate telnet credential to device, however disable it on switch device side, that might be the reason to see the error message "No valid Telnet credential" (please login NMS300, go to Resources->Devices, click device to see "Device Detail View", select "credential" at the bottom, to view which credential are associated). Back to your question, Telnet is not required to backup/restore configuration file most time.
Which protocols to implement backup and restore? it depends on the type of devices, most Managed Switch use SNMP, most smart switch use HTTP or HTTPS, some Prosafe Firewall use HTTPS.
In out testing lab, we tried M6100 (Managed Switch, only associate SNMPv3) and S3300-52X (Smart Switch, associate SNMPv2 and HTTPS), schedule backup/restore on both devices working well.
If you have concern the unencrypted connection when do backup/restore, you can select SNMPv3 or HTTPS (please note that not all devices support backup/restore via HTTPS).
The latest NMS300 build fixed a schedule backup bug, please upgrade and try with my suggestion. If still can't resolve your issue, let me know the model of your Netgear switch.
Hi Bruce,
now I've found time to do some more testing:
- upgraded our NMS300 installation to version 1.5.0.18
- enabled SNMPv3, HTTPS and ssh and disabled telnet on one test switch of type M4100-50G-PoE+, Firmware 10.0.2.20
- created credentials for SNMPv3, HTTPS and ssh
- cretated a config backup profile with the above test switch included
- deleted telnet from the associated credentials of this switch
- associated the SNMPv3 credential to the test switch, executed the backup profile -> "No valid Telnet credential"
- associated the HTTPS credential to the test switch, executed the backup profile -> "No valid Telnet credential"
- associated the ssh credential to the test switch, executed the backup profile -> "No valid Telnet credential"
- enabled telnet on that switch
- associated the telnet credential to the test switch, executed the backup profile -> OK
So, if telnet is not required for a configuration backup profile, please let me know how to use an encrypted connection. I have no idea what could be wrong in my configuartion. Thanks!
Kind Regards
Christoph
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