Ping discovering host but nc does not!












0















On a Centos7 host:



[root@data01-elastic ~]# ping -c 2 10.18.0.13
PING 10.18.0.13 (10.18.0.13) 56(84) bytes of data.
64 bytes from 10.18.0.13: icmp_seq=1 ttl=64 time=0.196 ms
64 bytes from 10.18.0.13: icmp_seq=2 ttl=64 time=0.237 ms

--- 10.18.0.13 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.196/0.216/0.237/0.025 ms
[root@data01-elastic ~]# nc -zv -w 2 10.18.0.13 9300
Ncat: Version 7.50 ( https://nmap.org/ncat )
Ncat: No route to host.


How is this possible?









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    On a Centos7 host:



    [root@data01-elastic ~]# ping -c 2 10.18.0.13
    PING 10.18.0.13 (10.18.0.13) 56(84) bytes of data.
    64 bytes from 10.18.0.13: icmp_seq=1 ttl=64 time=0.196 ms
    64 bytes from 10.18.0.13: icmp_seq=2 ttl=64 time=0.237 ms

    --- 10.18.0.13 ping statistics ---
    2 packets transmitted, 2 received, 0% packet loss, time 999ms
    rtt min/avg/max/mdev = 0.196/0.216/0.237/0.025 ms
    [root@data01-elastic ~]# nc -zv -w 2 10.18.0.13 9300
    Ncat: Version 7.50 ( https://nmap.org/ncat )
    Ncat: No route to host.


    How is this possible?









    share

























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      On a Centos7 host:



      [root@data01-elastic ~]# ping -c 2 10.18.0.13
      PING 10.18.0.13 (10.18.0.13) 56(84) bytes of data.
      64 bytes from 10.18.0.13: icmp_seq=1 ttl=64 time=0.196 ms
      64 bytes from 10.18.0.13: icmp_seq=2 ttl=64 time=0.237 ms

      --- 10.18.0.13 ping statistics ---
      2 packets transmitted, 2 received, 0% packet loss, time 999ms
      rtt min/avg/max/mdev = 0.196/0.216/0.237/0.025 ms
      [root@data01-elastic ~]# nc -zv -w 2 10.18.0.13 9300
      Ncat: Version 7.50 ( https://nmap.org/ncat )
      Ncat: No route to host.


      How is this possible?









      share














      On a Centos7 host:



      [root@data01-elastic ~]# ping -c 2 10.18.0.13
      PING 10.18.0.13 (10.18.0.13) 56(84) bytes of data.
      64 bytes from 10.18.0.13: icmp_seq=1 ttl=64 time=0.196 ms
      64 bytes from 10.18.0.13: icmp_seq=2 ttl=64 time=0.237 ms

      --- 10.18.0.13 ping statistics ---
      2 packets transmitted, 2 received, 0% packet loss, time 999ms
      rtt min/avg/max/mdev = 0.196/0.216/0.237/0.025 ms
      [root@data01-elastic ~]# nc -zv -w 2 10.18.0.13 9300
      Ncat: Version 7.50 ( https://nmap.org/ncat )
      Ncat: No route to host.


      How is this possible?







      networking ping netcat nc





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      asked 5 mins ago









      pkaramolpkaramol

      479218




      479218






















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