I read some article about linux kernel having vulnerabilities
The linux kernel is a huge piece of software. Here is a list of 1338 vulnerabilities that have been previously discovered and patched in the linux kernel. Can you be more specific?
how should I prevent remote acces to my station and other things?
The topic of hardening a linux system has entire textbooks and entire courses devoted to it. In general (just like on Windows or Mac), you need to look at which programs are running and ask yourself "Does this need to be running?". If no, then turn it off, if yes, then do some googling to find best-practices for hardening it. Repeat for all software that is running. In general, the out-of-the-box configuration of a linux system is pretty secure, so I wouldn't worry too much about it. Almost all things that could grant "remote access" are things you have to turn on manually.
You're going to need to be a lot more specific and provide a lot of details about your system if you want any kind of useful answer on this site.