Fyodor wrote:
> On Mon, Jan 22, 2007 at 12:07:45PM -0800, doug_at_hcsw.org wrote:
>> Small fix. I was reading the UDP RFC http://www.ietf.org/rfc/rfc768.txt
>
> Great catch! Would you apply it to /nmap ? Also, I think the change
> should probably go into at least the osscan.cc:174 instance below
> (changing to a decrement should be fine):
I just searched through the other RFCs, and it looks like only UDP has
this rule. So, yeah, only the osscan.cc should be changed.
-Kris
>
> flog~/nmap>grep -n -A1 o.badsum *.cc
> nmap.cc:806: o.badsum = 1;
> nmap.cc-807- } else if (strcmp(long_options[option_index].name, "iR") == 0) {
> --
> osscan.cc:174: if ( o.badsum )
> osscan.cc-175- udp->uh_sum++;
> --
> targets.cc:1049:if ( o.badsum )
> targets.cc-1050- pingpkt.checksum--;
> --
> tcpip.cc:1188:if ( o.badsum )
> tcpip.cc-1189- --tcp->th_sum;
> --
> tcpip.cc:1439:if ( o.badsum )
> tcpip.cc-1440- --pingpkt.checksum;
> --
> tcpip.cc:1499: if (o.badsum)
> tcpip.cc-1500- --igmp.igmp_cksum;
> --
> tcpip.cc:1682: if ( o.badsum )
> tcpip.cc-1683- --udp->uh_sum;
>
> Cheers,
> -F
>
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Received on Jan 22 2007
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