A comprehensive list of the top 25 Active Directory Security Tips and best practices. Securing domain admins, local administrators, audit policies, monitoring AD for compromise, password policies, vulnerability scanning and more.
Zstandard, or zstd as short version, is a fast lossless compression algorithm, targeting real-time compression scenarios at zlib-level and better compression ratios. It’s backed by a very fast entropy stage, provided by Huff0 and FSE library.
The project is provided as an open-source dual BSD and GPLv2 licensed C library, and a command line utility producing and decoding .zst, .gz, .xz and .lz4 files. Should your project require another programming language, a list of known ports and bindings is provided on Zstandard homepage.
Create a USB bootable device from an ISO image easily and securely.
Don’t want to messup the system with dd command? Create a bootable USB from an ISO in one line [see it in action].
Works seamlessly with hybrid and non-hybrid ISOs (SYSLINUX or UEFI compliant) such as any linux ISO, Windows ISO or rescue live-cds like UltimateBootCD. You don’t have to tweak anything: bootiso inspects the ISO file and chooses the best method to make your USB bootable.
tcpdump101.com is a great site that you can use to generate tcpdump commands, you enter the parameters it’s asks for and it will generate the command for you. It’s handy if you are not running tcpdump commands very often and then have to either look up the help/man pages or Google for the command switches you want. It also has output for Cisco and Checkpoint firewalls.
From there site they say… tcpdump101.com has been designed to help people capture packets on different devices to assist with network troubleshooting, service troubleshooting and even passive red team activities. There is an assumption that the user has a basic understanding of what they want to capture – As much as this is a tool to help people, the user has to use their own logic since every situation is different. That being said, I strongly suggest that if you’re just starting out with packet captures to grab a copy of Virtual Box and play around with Linux and tcpdump. Although tcpdump may not be what you ultimately use, it will give you an excellent understanding of what you’ll see, even with other products and vendors.
As a safety measure (if at all possible) make sure to set a capture limit on your PCaps. If you make a mistake building your filters, you may end up captuing a lot of traffic. Although the odds are slim, there is a chance that your PCap could fill the NIC buffer and start dropping packets. The worst-case scenario is that it runs out of memory while you’re logged in remotely. With today’s hardware, it most likely won’t happen however you should always expect the best and plan for the worst.