Davoud Teimouri

Virtualization & Datacenter

Category: Linux

NFTables, The Next Generation of Packet Classification Framework

iptables vs nftables

Over the years, XTables (IPTables, IP6Tables, ARPTables and EBTables) were using as user-space utility programs for packet filtering in Linux distributions such as Red Hat Enterprise Linux or Ubuntu. Now, Linux vendors are replacing XTables with next generation packet classification framework which called NFTables.

nftables replaces the popular {ip,ip6,arp,eb}tables. This software provides a new in-kernel packet classification framework that is based on a network-specific Virtual Machine (VM) and a new nft user-space command line tool. nftables reuses the existing Netfilter subsystems such as the existing hook infrastructure, the connection tracking system, NAT, user-space queuing and logging subsystem.

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Red Hat Enterprise Linux 8.0 Beta

Red Hat has introduced beta version of Enterprise Linux with lot of new features to covering bushiness requirements that previous version can’t cover those requirements. it’s a major version and we’ll see big changes in GA version.

Some new packages are added to the image and some of packages, drivers and features have been removed in this version.

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New Release – Oracle Linux 7 Update 6

Oracle Linux 7 Update 6 is shipping with the below kernels:

Unbreakable Enterprise Kernel (UEK) Release 5 (4.14.35-1818.3.3) for x86-64 and ARM
Red Hat Compatible Kernel (3.10.0-957) for x86-64 only
Note: Unbreakable Enterprise Kernel (UEK) Release 5 is newest major version of UEK by Oracle and not a release of Linux Kernel, this kernel is based on the mainline Linux kernel version 4.14.35. Supporting 64-bit ARM (aarch64) architecture has been introduced with this version of UEK.

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NTP Software Implementations Comparison

This post is about NTP Software implementations actually, but I have to write some words about NTP. NTP is an angle for financial applications, actually some of services such as banking services are very depended to clock synchronizations protocols. NTP is an ancient thing, it is more than 30 years old and even older than Windows 7 and Windows XP.

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HPE Management Component Pack (MCP)

HPE

HPE Management Component Pack or HPE MCP provides agent software for use on community-supported distributions. The MCP (unlike the SPP) does not provide drivers and firmware (firmware is provided via HPSUM, and drivers are provided by the distribution vendors). The Linux Service Pack for ProLiant provides updated drivers and agent software for use on RedHat Linux and SUSE Linux Enterprise Server.

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