RHEL8 Networking

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New Main Features

Updated TCP/IP stack (v4.18)

  • Global increased performance with BBR congestion control algorithm
  • DNS stub resolver improvements via glibc 2.28

Performance monitoring and network control

  • eBPF for networking, tracing, firewalls, and filtering (tech preview in RHEL 8.0)

IPVLAN

  • Scalable networking for containers (no MAC address limitation)

Offloads

  • Ipsec crypto VPN, TC (tech preview in RHEL 8.0)

NetworkManager 1.14

  • Default CLI and API to configure services
  • Reduced footprint
  • Can’t be deactivated or removed

Firewalld 0.6.3

  • Enabled by default
  • Nftables backend
  • Efficient and better performance
  • New tools (iptables-translate) to convert iptables to nftables

DPDK for public cloud

  • Enables fast networking on clouds
  • Portability on hybrid clouds

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Upcoming Events (Local Time)

  1. Jan
    31
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      CentOS: Dojo, Brussels, Belgium.

RHCSA7: Task of the day

Allowed time: 10 minutes.
Boot and change the root password before the end of the boot process.

RHCE7: Task of the day

Allowed time: 8 minutes.
Set up an iScsi target based on a block backstore of 100MB called lv_iscsi with basic authentication, ext4 filesystem and standard firewall configuration.

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