-S switch not always followed?

["Michael Scheidell" <scheidell () secnap net>]

Tcpdump shows 'nessus_tcp_scanner' scanning ports and using source ip
not listed in -S switch.

Nessus 2.2.7, FBSD 4.11.

Nessus startup  nessus -a 127.0.0.1 -S 1.1.1.64,1.1.1.65 -D

REAL ip address 1.1.1.133 
.64 and .65 are pingable aliases

Nessus.rc: built by deseleting all, selecting only nessus_tcp_scanner
and ping scan.

Under prefs, select tcp ping (built-in) and icmp scan (q 6)

Tcpdump shows icmp's being 'sourced' with .64,65, but shows portscanner
sourced at .133.




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