We have an Unbound caching server that was setup by another internal team. However, there is no logging enabled. I not only want this enabled for troubleshooting internal name resolution issues, but also to feed into a SIEM, and do other traffic analysis.
My questions (and I know every environment is different)
Is there a "sizing guide" so one can ascertain how much disk space should be allocated to the DNS caching host?
I suppose this might be determined by the log verbosity, so with verbosity: 1 or verbosity: 3, etc.. how does this come into play?
Is there anything else to consider other than just adding the #logfile directive to the .conf file?
to get the unbound logs over to a syslog/SIEM, I suspect I will need to use something like rsyslog - correct?
Thanks in advance for any help or advice