SNMP V3 AES 256 Device adding fail

[halilibrahimayik]

Environment:

• OS name: [e.g. Ubuntu]
• OS version: [e.g. 24.04]
• Architecture: [e.g. amd64]
• ntopng Enterprise M v.6.4.250501 rev.25736 (Ubuntu 24.04.1 LTS) |

What happened:

How did you reproduce it?

Debug Information:

image
Hello Luca, first of all, thank you for the support of sha256 for the snmp in the new version. But a small problem is still going on when we try to add asset with v3 snmp sha256 and we still get the connection error and address the snmp.gcc file during the error

2025-05-06T15:05:38.014147+03:00 ntopng01 ntopng[2398]: 06/May/2025 15:05:38 [SNMP.cpp:473] WARNING: SNMP PDU invalid aut
hentication protocol [sha256]
2025-05-06T15:05:38.581286+03:00 ntopng01 ntopng[2398]: message repeated 4 times: [ 06/May/2025 15:05:38 [SNMP.cpp:473] W
ARNING: SNMP PDU invalid authentication protocol [sha256]]
2025-05-06T15:05:41.090967+03:00 ntopng01 ntopng[2398]: 06/May/2025 15:05:41 [SNMP.cpp:473] WARNING: SNMP PDU invalid aut
hentication protocol [sha256]
2025-05-06T15:05:41.730381+03:00 ntopng01 ntopng[2398]: message repeated 4 times: [ 06/May/2025 15:05:41 [SNMP.cpp:473] W
ARNING: SNMP PDU invalid authentication protocol [sha256]]
2025-05-06T15:05:44.171066+03:00 ntopng01 ntopng[2398]: 06/May/2025 15:05:44 [SNMP.cpp:473] WARNING: SNMP PDU invalid aut
hentication protocol [sha256]
2025-05-06T15:05:44.806091+03:00 ntopng01 ntopng[2398]: message repeated 4 times: [ 06/May/2025 15:05:44 [SNMP.cpp:473] W
ARNING: SNMP PDU invalid authentication protocol [sha256]]
2025-05-06T15:05:47.254532+03:00 ntopng01 ntopng[2398]: 06/May/2025 15:05:47 [SNMP.cpp:473] WARNING: SNMP PDU invalid aut
hentication protocol [sha256]
2025-05-06T15:05:47.415048+03:00 ntopng01 ntopng[2398]: 06/May/2025 15:05:47 [SNMP.cpp:473] WARNING: SNMP PDU invalid aut
hentication protocol [sha256]

[lucaderi]

I have made a fix. Please try updating in 2 hours from now and report

[halilibrahimayik]

Hi @lucaderi,

Thanks a lot for your effort. This patch is working for me. :) 👍 <3