- Set timing speed (5 is the fastest): -T[0-5]
- Parallel host group sizes: --min-hostgroup/max-hostgroup <size>
- Number of parallel probes: --min-parallelism/max-parallelism <numprobes>
- Number of port scan probe retransmissions: --max-retries <tries>
- Give up on target after a certain time span: --host-timeout <time>