Three Nessus 3.0.1 Questions, 1 Remark:
Question
1:
- nessusd.conf has max_hosts = 40- nessusrc has max_hosts = 40I submit multiple scan "jobs" to the scanning server simultaneously. Does the 40-host limit apply to each job, or to nessusd overall? That is, if I submit 10 jobs, each with 50 targets, will the server scan a maximum of 40 targets simultaneously, or 400?I can't test this out because it's a [mostly] production environment.
Question
2:
What are the optimum max_hosts and max_checks values? The scanning servers are all HP BL25p blades with 4 Gig RAM and dual processors, each processor is a 2600Mhz AMD with 64K L1 cache and 1024K L2 cache. Hard drives are mirrored 172G 15,000 RPM SCSI. OS is 32-bit RHEL4. The network is robust and the scans occur on weekends when traffic is minimal. I'm currently using the defaults, max_hosts=40 and max_checks=5.
Question
3:
How does a simple iptable ruleset affect nessus' performance (if at all)? When I run scans with iptables running, I occasionally see "dropped packet" messages.
Remark to
Nessus 3 developer(s):
I am extremely pleased with the improved performance in this version! Thank you for your talent and efforts.
Regards,
John
Scherff
Sr. IT
Security Analyst
24 Hour
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