Public DNS services have been around for several years, but they took really off in 2009 when companies such as Google started to enter the market. The Google Public DNS service is but one of the many services that Internet users can switch to if they suspect that the DNS service offered by their Internet Service Provider is lacking in one regard or the other. Read more on gHacks…

pcapfix tries to repair your broken pcap and pcapng files. To fix your pcap files the tool first checks for an intact pcap global header and repairs it if there are some corrupted bytes. It there seems to be no global header at all, pcapfix adds a self-created one at the beginning of the file. In a second step the tool tries to find pcap packet headers inside the file, below the global header. It

fwknop stands for the "FireWall KNock OPerator", and implements an authorization scheme called Single Packet Authorization (SPA). This method of authorization is based around a default-drop packet filter (fwknop supports iptables and firewalld on Linux, ipfw on FreeBSD and Mac OS X, and PF on OpenBSD) and libpcap. SPA is essentially next generation port knocking (more on this below). The design de

Introduction ferm is a tool to maintain complex firewalls, without having the trouble to rewrite the complex rules over and over again. ferm allows the entire firewall rule set to be stored in a separate file, and to be loaded with one command. The firewall configuration resembles structured programming-like language, which can contain levels and lists. chain INPUT { policy DROP; mod state state (

The goal of this project is to revise the network traffic control infrastructure of Linux to overcome shortcomings of the existing architecture, and to make it more extensible. In particular, we try to address the following issues: Create a more user-friendly configuration language Provide interfaces for straightforward interaction with network management Allow seamless integration of hardware acc

Protect you system services from port scanners, by slowing them down and feeding with bougs information. The service signature obfuscator is out.About Portspoof The portspoof program is designed to enhance OS security through emulation of legitimate service signatures on otherwise closed ports. It is meant to be a lightweight, fast, portable and secure addition to the any firewall system or securi

cacti(カクタイ)とは、サボテンという意味のグラフツール cacti(カクチ)とは、サボテンという意味のグラフツール 読み方を間違っていた MRTGの代替ツール † グラフツールというとMRTG*1が有名ですね。cacti*2もMRTGと同じように、SNMPエージェントが取得した値や、プログラム/スクリプトの出力結果をグラフ化することが出来ます。MRTGよりも優れている点はいくつもありますが、まずはその操作性を体験してみて下さい。ホストの追加やインタフェースの追加など、全てWEBのGUIを通してコンフィグレーション可能なので、慣れるととても楽です。 ↑ RRDToolのGUIフロントエンド † cactiはグラフデータの保存やグラフ生成に、MRTGより高機能なRRDTool*3を使っています。cactiではRRDToolの複雑なコマンドラインオプションと格闘することなく、RRDTool

Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception raised by your code. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. Combine statistics from every Riak node in your cluster and forward to Graphite. Send alerts when a key process fails to check in. Know ho

Secure Email Be Sure Your Email Is Safe, Private, and Legal The CheckTLS Website lets you look at your email security from a casual glance to an in-depth scrutiny. It is for people who want to check that their email is safe, secure, and complies with all laws and regulations. A subscription to CheckTLS.com lets you test hundreds or thousands of email targets. You list them in a "Batch" and we test

Improve your infrastructure visibility and enhance threat prevention with a versatile multi-platform tool. With support for over 100 operating system versions and more than 120 configurable modules, gain comprehensive insights and increased security.

(mobile shell) Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing of user keystrokes. Mosh is a replacement for interactive SSH terminals. It's more robust and responsive, especially over Wi-Fi, cellular, and long-distance links. Mosh is free software, available for GNU/Linux, BSD, macOS, Solaris, Android, Chrom

Tools for Bandwidth Estimation (for available and bottleneck bandwidth) Yaz: Yaz measures end-to-end available bandwidth. 2007. Joel Sommers, Paul Barford, Walter Willinger, Laboratory-based Calibration of Available Bandwidth Estimation Tools, Microprocessors & Microsystems, V.31 N.4, 2007. "We designed a calibrated available bandwidth estimation tool called Yaz that builds on the insights of Path

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