What is non-root user?

What is non-root user?

This value means that any files, such as configuration files or log files that are created by the process, a user can read/write/execute while group and others can only read. It is only necessary to change the umask value if the non-default is required.

What is non-root user in Linux?

Generally, Most Linux distros ask their users to use lower user privileges while using the Operating System. That is a great advice for Operating System’s security, because this non-Root (Non-Administrative) environment maintains an extra layer of security between the normal user and the Operating System.

Can you execute iptables–list without being root?

Is it at all possible to execute iptables –list …. command without being root? $ iptables –list iptables v1.4.21: can’t initialize iptables table `filter’: Permission denied (you must be root) Perhaps iptables or your kernel needs to be upgraded.

Do you need Cap _ net _ Raw for iptables?

It appears iptables needs both CAP_NET_RAW and CAP_NET_ADMIN to be able to read the tables. I tried and it was ok. Indeed, iptables uses the netlink interface to communicate with the kernel. It opens a netlink socket to xtables, then issues commands via this socket.

How does iptables use the NetLink interface?

Indeed, iptables uses the netlink interface to communicate with the kernel. It opens a netlink socket to xtables, then issues commands via this socket. Access control is performed when the socket is opened, not for individual commands, so the same permissions are required for listing and modifying rules.

Can a user list rules but not modify them?

The only way to allow a user to list rules but not modify them is to give them a carefully-written setuid (or setcap) executable. It would be nice if there was an interface to netfilter in /proc, but as far as I know the task of implementing it has never been completed.