Re: Continuous tcp ping?

[ToddAndMargo <ToddAndMargo () zoho com>]

On 08/27/2017 10:31 PM, Fyodor wrote:
> On Sun, Aug 27, 2017 at 7:06 PM, ToddAndMargo <ToddAndMargo () zoho com 
> <mailto:ToddAndMargo () zoho com>> wrote:
>
>     Hi All,
>
>     Is there a way to use NMap to do a continuous tcp
>     ping of a particular port?  I am only after the
>     response time
>
>
> Hi Todd.  You would generally use our nping utility for that.  It comes 
> with Nmap.  Here's an example of sending 3 TCP syn packets to port 80 of 
> scanme.nmap.org <http://scanme.nmap.org>:
>
> # nping -tcp -c3 -p 80 scanme.nmap.org <http://scanme.nmap.org>
>
> Starting Nping 0.7.40 ( https://nmap.org/nping ) at 2017-08-27 22:28 PDT
> SENT (0.0456s) TCP 192.168.0.108:49232 <http://192.168.0.108:49232> > 
> 45.33.32.156:80 <http://45.33.32.156:80> S ttl=64 id=9502 iplen=40 
>   seq=1975150814 win=1480
> RCVD (0.2278s) TCP 45.33.32.156:80 <http://45.33.32.156:80> > 
> 192.168.0.108:49232 <http://192.168.0.108:49232> SA ttl=52 id=0 iplen=44 
>   seq=3623470103 win=29200 <mss 1460>
> SENT (1.0459s) TCP 192.168.0.108:49232 <http://192.168.0.108:49232> > 
> 45.33.32.156:80 <http://45.33.32.156:80> S ttl=64 id=9502 iplen=40 
>   seq=1975150814 win=1480
> RCVD (1.2477s) TCP 45.33.32.156:80 <http://45.33.32.156:80> > 
> 192.168.0.108:49232 <http://192.168.0.108:49232> SA ttl=52 id=0 iplen=44 
>   seq=3639139057 win=29200 <mss 1460>
> SENT (2.0478s) TCP 192.168.0.108:49232 <http://192.168.0.108:49232> > 
> 45.33.32.156:80 <http://45.33.32.156:80> S ttl=64 id=9502 iplen=40 
>   seq=1975150814 win=1480
> RCVD (2.2678s) TCP 45.33.32.156:80 <http://45.33.32.156:80> > 
> 192.168.0.108:49232 <http://192.168.0.108:49232> SA ttl=52 id=0 iplen=44 
>   seq=3654733783 win=29200 <mss 1460>
> Max rtt: 219.887ms | Min rtt: 182.099ms | Avg rtt: 201.251ms
> Raw packets sent: 3 (120B) | Rcvd: 3 (138B) | Lost: 0 (0.00%)
> Nping done: 1 IP address pinged in 2.32 seconds
>
> If you want to send the packets indefinitely, use -c0.  More details: 
> https://nmap.org/nping/
>
> Cheers,
> Fyodor


Works perfect.  Had to uninstall nmap and reinstall it to get it.

Thank you!


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