Understanding ss Output

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I have run the following command using ss.



# ss -ua | grep radius
UNCONN 0 0 :::radius :::*


My question is, what interface/IP does :::radius corespond with? What Interface does :::* correspond with and where is its source port information for that matter? What do the asterisks mean in the output of ss? Do they mean the same as 0.0.0.0?




networking




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  • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
    – AlexP
    Dec 14 '17 at 22:00











  • Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
    – Timothy Pulliam
    Dec 14 '17 at 22:03














up vote
1
down vote

favorite
1












I have run the following command using ss.



# ss -ua | grep radius
UNCONN 0 0 :::radius :::*


My question is, what interface/IP does :::radius corespond with? What Interface does :::* correspond with and where is its source port information for that matter? What do the asterisks mean in the output of ss? Do they mean the same as 0.0.0.0?




networking




share|improve this question






















  • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
    – AlexP
    Dec 14 '17 at 22:00











  • Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
    – Timothy Pulliam
    Dec 14 '17 at 22:03












up vote
1
down vote

favorite
1









up vote
1
down vote

favorite
1






1





I have run the following command using ss.



# ss -ua | grep radius
UNCONN 0 0 :::radius :::*


My question is, what interface/IP does :::radius corespond with? What Interface does :::* correspond with and where is its source port information for that matter? What do the asterisks mean in the output of ss? Do they mean the same as 0.0.0.0?




networking




share|improve this question














I have run the following command using ss.



# ss -ua | grep radius
UNCONN 0 0 :::radius :::*


My question is, what interface/IP does :::radius corespond with? What Interface does :::* correspond with and where is its source port information for that matter? What do the asterisks mean in the output of ss? Do they mean the same as 0.0.0.0?





networking





share|improve this question













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edited Dec 14 '17 at 21:57

























asked Dec 14 '17 at 21:46









Timothy Pulliam

1,041516




1,041516











  • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
    – AlexP
    Dec 14 '17 at 22:00











  • Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
    – Timothy Pulliam
    Dec 14 '17 at 22:03
















  • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
    – AlexP
    Dec 14 '17 at 22:00











  • Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
    – Timothy Pulliam
    Dec 14 '17 at 22:03















:: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
– AlexP
Dec 14 '17 at 22:00





:: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Actually ss uses * for IPv4 any address.) :* means "any port", both in IPv4 and IPv6. :radius means :1812, from /etc/services. The output of the command means that some process is listening on all configured address UDPv6 port 1812 accepting datagrams from anywhere any port.
– AlexP
Dec 14 '17 at 22:00













Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
– Timothy Pulliam
Dec 14 '17 at 22:03




Thank you. This is what I thought but I needed confirmation. Thanks. If you want to make your comment an answer I can accept it.
– Timothy Pulliam
Dec 14 '17 at 22:03










1 Answer
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  • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Note: ss uses * to represent IPv4 any address.)


  • :* means "any port", both in IPv4 and IPv6.


  • :radius means :1812, from /etc/services.


The output of the command means that some process is listening on all configured addresses UDP port 1812, accepting datagrams from anywhere any port.






share|improve this answer




















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    up vote
    3
    down vote



    accepted










    • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Note: ss uses * to represent IPv4 any address.)


    • :* means "any port", both in IPv4 and IPv6.


    • :radius means :1812, from /etc/services.


    The output of the command means that some process is listening on all configured addresses UDP port 1812, accepting datagrams from anywhere any port.






    share|improve this answer
























      up vote
      3
      down vote



      accepted










      • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Note: ss uses * to represent IPv4 any address.)


      • :* means "any port", both in IPv4 and IPv6.


      • :radius means :1812, from /etc/services.


      The output of the command means that some process is listening on all configured addresses UDP port 1812, accepting datagrams from anywhere any port.






      share|improve this answer






















        up vote
        3
        down vote



        accepted







        up vote
        3
        down vote



        accepted






        • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Note: ss uses * to represent IPv4 any address.)


        • :* means "any port", both in IPv4 and IPv6.


        • :radius means :1812, from /etc/services.


        The output of the command means that some process is listening on all configured addresses UDP port 1812, accepting datagrams from anywhere any port.






        share|improve this answer












        • :: is the IPv6 equivalent of 0.0.0.0, that is, "any address". (Note: ss uses * to represent IPv4 any address.)


        • :* means "any port", both in IPv4 and IPv6.


        • :radius means :1812, from /etc/services.


        The output of the command means that some process is listening on all configured addresses UDP port 1812, accepting datagrams from anywhere any port.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Dec 14 '17 at 22:07









        AlexP

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