On Wed, Nov 25, 2015 at 04:35:11AM -0800, Peter Halaška wrote: > No prob, I appreciate your help. > > When I try your first solution with MAC address, it works when I send it to > my local router - I see replies. > But when I try to modify ICMP message as you said, Wireshark shows Ethernet > FCS incorrect. So which value should I change? > > Thanks! > > Peter > > Dňa streda, 25. novembra 2015 12:42:22 UTC+1 Vadim Kochan napísal(-a): > > > > On Wed, Nov 25, 2015 at 01:03:07PM +0200, vkochan wrote: > > > On Wed, Nov 25, 2015 at 02:51:31AM -0800, Peter Halaška wrote: > > > > Hello, > > > > > > > > I'm having some problems with trafgen. > > > > When I try to send an echo request packet to my localhost, I see it > > without > > > > any problems, but there is no *echo reply *(see attached screen). > > > > I'm using cfg file which I found here > > > > http://www.draconyx.net/articles/trafgen-expression-language.html > > with SRC > > > > & DST IP changed. > > > > Please, do you know where could be the problem? > > > > When I try exact thing with hping3, it works as it should - with echo > > > > replies. > > > > > > > > Thank you very much. > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups "netsniff-ng" group. > > > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [email protected] <javascript:>. > > > > For more options, visit https://groups.google.com/d/optout. > > > > > > Hi Peter, > > > > > > I think you should also modify source MAC address. > > > > > > Regards, > > > Vadim Kochan > > > > Peter, again, sorry for such a flood with idiotic advises from my side, > > > > I tried this example and I had the same issue it on my host until I > > changed ICMP message size to 48 bytes. > > > > ... > > > > /* ICMP Message */ > > fill(0x58, 48), > > } > > > > Regards, > > Vadim Kochan > >
What I think that may be you should increase packet length and correct csum considering new length, just try to use same length like in case for 'ping -c 1 127.0.0.1', so I think that may be problem with small packet length ? Regards, Vadim Kochan -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
