This is probably the best tutorial I've found for getting familiar with QoS stats within the Linux Kernel. It was originally published in the Linux Magazine in 2010 but is still completely relevant. The article was titled: Journey to the Center of the Linux Kernel: Traffic Control, Shaping and QoS.

QoS 2 messages which have been received from the Server, but have not been completely acknowledged. Since the client will blindly acknowledge any PUBCOMP (last message of a QoS 2 transaction), it won’t hang but will lost this QoS 2 message. QoS 1 and QoS 2 messages which have been sent to the Server, but have not been completely acknowledged. Jul 25, 2017 · iperf is a tool for performing network throughput measurements. It can test either TCP or UDP throughput. To perform an iperf test the user must establish both a server (to discard traffic) and a client (to generate traffic). Nov 29, 2017 · Linux Traffic Control. Traffic control (tc) is a very useful Linux utility that gives you the ability to configure the kernel packet scheduler. If you are looking for reasons to mess with the kernel scheduler, here are a few: Firstly, it’s fun to play with the different options and become familiar of all of Linux’s features. Hi, I'm using wireshark on Ubuntu 14.04 to decode wifi frames. I'm trying to decode the wifi frames between an AP and a windows PC acting as a wireless client, with wireshark under ubuntu running on a third, monitor pc. The wireless windows PC streams a youtube video. Wireshark is decoding QOS DATA This is on VMWare Workstation 12 Player, version 12.5.9 build-7535481, running on Win 7 Enterprise. My guest is running a current Linux kernel (4.9.95) and openssh 7.7_p1-r4 (though it seems like any software that uses QoS will have this problem.) Setting alternate QoS flags seems to work around the issue, e.g. ssh -o IPQoS=throughput

Mar 11, 2019 · ModSecurity can also monitor web traffic in real time and help you detect and respond to intrusions. It can be used with Apache, Nginx, and IIF and is compatible with Debian, Ubuntu, and CentOS. This tutorial explains how to install and configure ModSecurity on Apache web servers.

If you use Ubuntu Linux OS, though there aren’t that many we can use (or at least that I’m aware of) but for its simplicity and ease of use, “Wondershaper” is a very handy utility. It’s a command-line one and lets you apply network traffic throttling temporarily or permanently. The term quality of service is often used in the field of wide area network protocols (e.g. ATM) and telephony (e.g. VoIP), but rarely in conjunction with web applications. mod_qos is a quality of service module for the Apache web server implementing control mechanisms that can provide different levels of priority to different HTTP requests.

Jun 15, 2020 · I'm doing some research on configuring QoS on our multi-site MPLS network and have a question. I think I've seen somewhere that our network provider's QoS settings would have to match our internal settings. So, if I'm trying to carve out 60% of a circuit for VoIP, our provider would have to do the s

Enabled hardware can provide hardware QOS with the ability to steer traffic flows to designated traffic classes provided by this qdisc. Hardware based QOS is configured using the shaper parameter. bw_rlimit with minimum and maximum bandwidth rates can be used for setting transmission rates on each traffic class. Also further qdiscs may be added Sep 15, 2015 · This video will demonstrate how to perform the configuration of a traffic shaper on a Linux server running Ubuntu. In our example, we will limit the bandwidth in 50KBytes to the computer with the Remove qos in initial release, can add back later when there is functionality that uses it. Signed-off-by: Ted Kern ted.kern@canonical.com