iptables match multiport - need clarification : dport or dports , sport or sports - Ask Ubuntu


what best practice, mean when not using long version -destination-port or -source-port

we see both on various web sites. iptables.info never speaks of --dports or --sports.... please?

from man iptables-extensions:

multiport    module matches set of source or destination  ports.     15    ports  can specified.  port range (port:port) counts 2 ports.    can used in conjunction 1 of following protocols:    tcp, udp, udplite, dccp , sctp.     [!] --source-ports,--sports port[,port|,port:port]...           match  if   source port 1 of given ports.  flag           --sports convenient alias option.  multiple  ports           or  port ranges separated using comma, , port range           specified using colon.  53,1024:65535   therefore  match           ports 53 , 1024 through 65535.     [!] --destination-ports,--dports port[,port|,port:port]...           match  if   destination port 1 of given ports.            flag --dports convenient alias option.     [!] --ports port[,port|,port:port]...           match if either source or destination ports equal 1           of given ports.

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