Mail Archive: Open Networks

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Re: Echoing



The Echo program can not connect to the echo server. You need to check
whether the echo service on 192.168.77.4 is enabled by the kernel or
not. That UDP service is not provided by the Echo program. Use "telnet
192.168.77.4 9".

Phil

christos Tsarouchis wrote:
> 
> OK.
> Assume that the client is 192.168.74.2 and the target is 192.168.77.4
> I do telnet in the client and in the opletshell I type: "echo 192.168.77.4 anything"
> In the oplet shell of the client I get: received: null
> In the ore shell of the client I get : sending packet: anything
>                                  Waiting to receive...
>            Listener: java.io.IOException: Connection refused
>            received packet: null
> 
> In the target I get no messages.
> 
> Thanks
> Christos
> 
> Phil Wang wrote:
> 
> > Can you please send a log how you run Echo? Also, make sure that the
> > echo service is UP in the target host.
> >
> > Phil


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