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Mark D. Spivey

"Practical Hacking Techniques and Countermeasures"


This speeds up the scan, but can lead to missed packets
when a response takes longer than usual. With this
parameter you can guarantee that nmap will wait at least
the given amount of time before giving up on a probe.
--initial_rtt_timeout Specifies the initial
probe timeout. This is generally only useful when
scanning firwalled hosts with -P0. Normally nmap can
obtain good RTT estimates from the ping and the first
few probes. The default mode uses 6000.
--max_parallelism Specifies the maximum
number of scans nmap is allowed to perform in parallel.
Setting this to 1 means nmap will never try to scan more
than one port at a time. It also affects other parallel
scans such as ping sweep, RPC scan, etc.
--scan_delay Specifies the minimum
amount of time nmap must wait between probes. This
is mostly useful to reduce network load or to slow the
scan way down to sneak under IDS thresholds.
NmapNT Refer to nmap syntax above.
Nslookup nslookup [-SubCommand ...] [{Computer-
ToFind| [-Server]}]
Options:
-SubCommand ... Specifies one or more nslookup
subcommands as a command-line option. For a list of
subcommands, see Related Topics.
ComputerToFind Looks up information for
ComputerToFind using the current default DNS name
server, if no other server is specified. To look up a
computer not in the current DNS domain, append a
period to the name.
-Server Specifies to use this server as the DNS name
server.


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