Nagios Support Forum

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On 10-07-30 04:24 PM, William Attwood wrote:
> I'm using SNMP v3 with check_snmp v1.4.15 and snmpget v5.4.1 and ran
> into an interesting issue.
>
> I setup my Netgear switch to not need a password, and to use the
> Community public and the User public. When I do this, I get a response
> from snmpget stating there was no securityName.
>
> I can use snmpget to get the results I need:
> snmpget -v 3 -c public -u public 10.1.1.3 sysName.0
>
> however, I cannot with check_snmp. To correct this, on my side (and
> probably not correctly), I modified check_snmp.c:
>
> FROM:
>
> if (strcmp(seclevel, "noAuthNoPriv") == 0) {
> numauthpriv = 2;
> authpriv = calloc (numauthpriv, sizeof (char *));
> authpriv[0] = strdup ("-l");
> authpriv[1] = strdup ("noAuthNoPriv");
>
>
> TO:
>
> if (strcmp(seclevel, "noAuthNoPriv") == 0) {
> numauthpriv = 4;
> authpriv = calloc (numauthpriv, sizeof (char *));
> authpriv[0] = strdup ("-l");
> authpriv[1] = strdup ("noAuthNoPriv");
> authpriv[2] = strdup ("-u");
> authpriv[3] = strdup (secname);
>
>
>
>
> Am I doing something incorrect in my implementation of SNMP v3?

It first glance this seems right, although I'm not an expert in SNMP....
FWIW there isn't much advantages in using SNMP v3 that way over v2c.

I'll have to review the code and make sure it doesn't break anything,
but I think this could make it in.

Thanks

- --
Thomas
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