* firewalld (iptables) firewall to allow:
- TCP / 80 input, TCP / 443, TCP / SSH and block all the rest
- Exit only allow port 80 and 443 to update addresses otherwise block all by default
- Port 25 : check relay functions + VRFY function
* umask in 027 for all users
* Make temporary / tmp folder non-executable
I forgot to add that I have already been working on these tasks for a while and that I will do the job on the server.
This is really more support and consulting I need to be sure about the changes I have to make and commands to execute.
You won't have to intervene on the server, I will.
hello, I have been a Linux administrator for 5+ years. I have been consulting for 5 + years as security analyst and I have implemented PCI-DSS level security.
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