I am looking for help on service Port Sacn
Hi There
I have got RH 7.2, Looking for help on about service port scan and block an fix any service???? Thank ZIMMMM |
Nmap is a great port scan.
-twantrd |
Port Scanning
Hi
Thanks for your reply...As you may be know I am new on RH Would you plz make me clear about Nmap or twantrd like that.Actually I want to see whice type of command i can use to see all port of services and how i can block a service port or how I can fix any service port... PLz ZIM |
You can "block" ports using at least two ways:
1. Disable the service altogether. This is recommended. If you don't need a specific service you shouldn't be running it at all, period. Read the Redhat docs on how to do this the Redhat way, I know Redhat provides tools for configuring which services should be started on boot (or on request through inetd/xinetd). 2. Block access to the port using either a firewall (hardware or software doesn't really matter). Linux comes with iptables/netfilter that is an excellent software firewall (and it's a lot more too). To scan the commonly used ports on your system do nmap localhost. Many of the advanced nmap options require you to run it as root. Håkan |
If you just want to see open ports on your own machine try "netstat -tulanp"(as root), for blocking them look for info on iptables(or ipchains, not sure about rh7.2), try redhat-config-services if you want to disable them from starting on boot.
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