Dear enlightened ones I have a code that summarises log files and returns a summary with the relevant ip addresses and their frequency. The code looks like this:
#!/usr/local/bin/perl 
#
#       ACLlogscan.pl -- a script to summarise ACL log files
#
# Set behaviour
$log="H:/sys075/acls/local7.log";    # absolute path of ACL log file
$ntop=40;                # shows the top ten results(number can be cha
+nged i.e.if                     # the number
                    # is changed to 20 then you would see the top 20 r
+esults)



chomp ($acl=$ARGV[0]);            # User can enter a specific acl numb
+er
if ($acl == "") { $acl=".*"};        # if nothing is entered then

open(LOG , "<$log") or die;        # open the log file stated in the b
+ehaviour set
   
while (<LOG>) {                
 if (/IPACCESSLOGP: list $acl denied ([tcpudim]+) ([0-9.]+)\(([0-9]+)\
+) -> ([0-9.]+)\(([0-9]+)\), ([0-9]+) /) {                # pattern ma
+tching line
   $x=$6;
   $srca{$2}+=$x;
   $foo=sprintf("%16s  -> %16s  %3s port %-6s",$2,$4,$1,$5);
   $moo=sprintf("%3s port %-6s",$1,$5);
   
   $quad{$foo}+=$x;
   $port{$moo}+=$x;
   
 }
}
$n=0;
printf ("Connection Summary:\n");
foreach $i (sort { $quad{$b} <=> $quad{$a} } keys %quad) {
   if ($n++ >= $ntop) { last };
   printf ("%6s:%s\n", $quad{$i},$i);
}

[download]
My question is this, Currently the out put is only ip numbers. I want to add another part to the script that shows the connections by their dns name. How would i go about doin this. I was thinkin it would be another foreach loop and doing an nslookup( i dont know the perl code for that) on each element. Any help or suggestions would be greatly appreciated. thanks, a perl newbie

In reply to Adding an nslookup to a log script by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.