Blankhello, how do i know if my server has an open port? how? can i use iptables to restrict ports thats open? tnx! ps anyway, i have a problem with my iptables this is one of the errors..."/lib/modules/2.4.10-4GB/kernel/net/ipv4/netfilter/ip_tables.o: init_module: Device or resource busy" i even recompile my kernel k_deflt and still the problem is occuring.
Hello !
how do i know if my server has an open port? how? can i use iptables to restrict ports thats open?
--> You can check the ports that are used on your machine as root with the following two commands: "lsof -i" "netstat -at" If you want to test your firewall, you should run a portscan from another pc. First try would be "nmap -sT" and "nmap -sU". Type "man nmap" for more information about this portscanner. HTH, Armin -- Am Hasenberg 26 office: Institut für Atmosphärenphysik D-18209 Bad Doberan Schloss-Straße 6 Tel. ++49-(0)38203/42137 D-18225 Kühlungsborn / GERMANY Email: schoech@iap-kborn.de Tel. +49-(0)38293-68-102 WWW: http://armins.cjb.net/ Fax. +49-(0)38293-68-50
participants (2)
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Armin Schoech -
Rodel Collado Urani