4.1.1 Ensure nftables is installed

Information

nftables provides a new in-kernel packet classification framework that is based on a network-specific Virtual Machine (VM) and a new nft userspace command line tool.

nftables reuses the existing Netfilter subsystems such as the existing hook infrastructure, the connection tracking system, NAT, userspace queuing and logging subsystem.

nftables is a subsystem of the Linux kernel that can protect against threats originating from within a corporate network to include malicious mobile code and poorly configured software on a host.

Solution

Run the following command to install nftables

# dnf install nftables

Impact:

Changing firewall settings while connected over the network can result in being locked out of the system.

See Also

https://workbench.cisecurity.org/benchmarks/18208

Item Details

Category: SECURITY ASSESSMENT AND AUTHORIZATION, SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|CA-9, 800-53|SC-7, 800-53|SC-7(5), CSCv7|9.4

Plugin: Unix

Control ID: 063eb1f394fd2a29176aad55bbc7b369c2fca252c740678d1288bc0733dc5543