Linux - SecurityThis forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
I am currentally in the proccess of installing a firewall onto my server. The problem is, I dont know which ports are currentally in use. Is there anyway I can get a list of what ports are in use on my system?
In my network, we have a server (Linux Redhat 9) and a client (My fathers computer). I dont know what ports my fathers computer uses so i need ot find out what ports he is using.
netstat -pantu will show you what ports are in use locally. You can use nmap to determine ports are open on a remote system, though ideally you'd want to check locally as firewalls can obscure results. If your father is using Windows, then checkout fport .
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.