Re: help with packet tracer

["Tyler Littlefield" <tyler () tysdomain com>]

thanks, that was it, I think.
Does this need to be used for the ID and that too?

----- Original Message ----- 
From: "Gisle Vanem" <gvanem () broadpark no>
To: <tcpdump-workers () lists tcpdump org>
Sent: Thursday, February 19, 2009 6:38 AM
Subject: Re: [tcpdump-workers] help with packet tracer


> > the size of the Ip works, but when I get the tcp packet, things don't 
> > work as planned--it gives invalid ports.
>
> I see:
>
>  tcp = (tcp_hdr *) ((packet + sizeof (ether_hdr)) + ip_size);
>  cout << "Source port: " << tcp->th_sport << "\t\tDestination port: " << 
> tcp->th_dport << "." << endl;
>
> You forgot to use ntohs(). These are 16-bit on network order.
>
> --gv
>
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