Can't block certain port on my linux server












0















I'm trying to block my server from getting requests on port 8001.
I ran sudo iptables -A INPUT -p tcp --dport 8001 -j DROP, then I ran netstat -nlp to see if the port is still listening.
The output was:



will not be shown, you would have to be root to see it all.)

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      -               

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               

tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      -               

tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      -               

tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      -               

tcp6       0      0 :::22                   :::*                    LISTEN      -               

tcp6       0      0 :::7777                 :::*                    LISTEN      1173/node       

tcp6       0      0 :::10050                :::*                    LISTEN      -               

udp        0      0 0.0.0.0:39192           0.0.0.0:*                           -               

udp        0      0 0.0.0.0:68              0.0.0.0:*                           -


It's seems that the port is still open and listening to requests.
How can I close it?






iptables







share|improve this question



























    0















    I'm trying to block my server from getting requests on port 8001.
    I ran sudo iptables -A INPUT -p tcp --dport 8001 -j DROP, then I ran netstat -nlp to see if the port is still listening.
    The output was:



    will not be shown, you would have to be root to see it all.)
    
Active Internet connections (only servers)
    
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
    
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      -               
    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               
    
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      -               
    
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      -               
    
tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      -               
    
tcp6       0      0 :::22                   :::*                    LISTEN      -               
    
tcp6       0      0 :::7777                 :::*                    LISTEN      1173/node       
    
tcp6       0      0 :::10050                :::*                    LISTEN      -               
    
udp        0      0 0.0.0.0:39192           0.0.0.0:*                           -               
    
udp        0      0 0.0.0.0:68              0.0.0.0:*                           -


    It's seems that the port is still open and listening to requests.
    How can I close it?






    iptables







    share|improve this question

























      0












      0








      0








      I'm trying to block my server from getting requests on port 8001.
      I ran sudo iptables -A INPUT -p tcp --dport 8001 -j DROP, then I ran netstat -nlp to see if the port is still listening.
      The output was:



      will not be shown, you would have to be root to see it all.)
      
Active Internet connections (only servers)
      
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
      
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      -               
      
tcp6       0      0 :::22                   :::*                    LISTEN      -               
      
tcp6       0      0 :::7777                 :::*                    LISTEN      1173/node       
      
tcp6       0      0 :::10050                :::*                    LISTEN      -               
      
udp        0      0 0.0.0.0:39192           0.0.0.0:*                           -               
      
udp        0      0 0.0.0.0:68              0.0.0.0:*                           -


      It's seems that the port is still open and listening to requests.
      How can I close it?






      iptables







      share|improve this question














      I'm trying to block my server from getting requests on port 8001.
      I ran sudo iptables -A INPUT -p tcp --dport 8001 -j DROP, then I ran netstat -nlp to see if the port is still listening.
      The output was:



      will not be shown, you would have to be root to see it all.)
      
Active Internet connections (only servers)
      
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
      
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      -               
      
tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      -               
      
tcp6       0      0 :::22                   :::*                    LISTEN      -               
      
tcp6       0      0 :::7777                 :::*                    LISTEN      1173/node       
      
tcp6       0      0 :::10050                :::*                    LISTEN      -               
      
udp        0      0 0.0.0.0:39192           0.0.0.0:*                           -               
      
udp        0      0 0.0.0.0:68              0.0.0.0:*                           -


      It's seems that the port is still open and listening to requests.
      How can I close it?






      iptables




      iptables






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 2 days ago









      KeselmeKeselme

      1062




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          I may be suffering from a misunderstanding (if so, people will tell me!)



          iptables sets up firewall rules, and you have configured the firewall not to pass on items directed to port 8001



          netstat shows ports that programs are listening to



          So, your firewall is not allowing port 8001 through, but a program is listening for pings on that port. There is no conflict here - if you want your program not to listen to the port, close the program.



          If you are interested in what rules that you have active in the firewall, look at iptables -L or iptables -S






          share|improve this answer























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            I may be suffering from a misunderstanding (if so, people will tell me!)



            iptables sets up firewall rules, and you have configured the firewall not to pass on items directed to port 8001



            netstat shows ports that programs are listening to



            So, your firewall is not allowing port 8001 through, but a program is listening for pings on that port. There is no conflict here - if you want your program not to listen to the port, close the program.



            If you are interested in what rules that you have active in the firewall, look at iptables -L or iptables -S






            share|improve this answer




























              2














              I may be suffering from a misunderstanding (if so, people will tell me!)



              iptables sets up firewall rules, and you have configured the firewall not to pass on items directed to port 8001



              netstat shows ports that programs are listening to



              So, your firewall is not allowing port 8001 through, but a program is listening for pings on that port. There is no conflict here - if you want your program not to listen to the port, close the program.



              If you are interested in what rules that you have active in the firewall, look at iptables -L or iptables -S






              share|improve this answer


























                2












                2








                2







                I may be suffering from a misunderstanding (if so, people will tell me!)



                iptables sets up firewall rules, and you have configured the firewall not to pass on items directed to port 8001



                netstat shows ports that programs are listening to



                So, your firewall is not allowing port 8001 through, but a program is listening for pings on that port. There is no conflict here - if you want your program not to listen to the port, close the program.



                If you are interested in what rules that you have active in the firewall, look at iptables -L or iptables -S






                share|improve this answer













                I may be suffering from a misunderstanding (if so, people will tell me!)



                iptables sets up firewall rules, and you have configured the firewall not to pass on items directed to port 8001



                netstat shows ports that programs are listening to



                So, your firewall is not allowing port 8001 through, but a program is listening for pings on that port. There is no conflict here - if you want your program not to listen to the port, close the program.



                If you are interested in what rules that you have active in the firewall, look at iptables -L or iptables -S







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 2 days ago









                Charles GreenCharles Green

                13.3k73658




                13.3k73658






























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