if an app has a default port it is for suer integrated somewhere in the exploit... so just look @ the code...
CODE
CA License Server "GETCONFIG" Remote Buffer Overflow Exploit
Date : 03/03/2005
----snip----
my $info =
{
'Name' => 'CA License Server GETCONFIG Overflow',
'Version' => '$Revision: 1.8 $',
'Authors' => [ 'Thor Doomen <syscall [at] hushmail.com>' ],
'Arch' => [ 'x86' ],
'OS' => [ 'win32', 'win2000', 'winxp', 'win2003' ],
'Priv' => 1,
'AutoOpts' => { 'EXITFUNC' => 'thread' },
'UserOpts' => {
'RHOST' => [1, 'ADDR', 'The target address'],
'RPORT' => [1, 'PORT', 'The target port', 10202], //<<------- HUH
should be all clear now

greetz