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Virtuozzo iptables firewall
Recently I got chance to play with Virtuozzo VPS. Good news is they are good to reduced cost and bad news (as of Dec-04, 2004) they do not support full iptables rule set like –state and –log etc....
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How to: Linux flush or remove all iptables rules
Here is a small script that does this. Debian or Ubuntu GNU/Linux does not comes with any SYS V init script (located in /etc/init.d directory). You create a script as follows and use it to stop or...
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Linux Cutting the tcp/ip network connection with cutter command
Recently I came across very powerful and nifty tool called cutter. Just imagine that people in your private network using peer to peer (P2P) software such as Kazaa, iMesh or others and you want to cut...
View ArticleNo Route to Host error and solution
I am getting error that read as No Route to Host. I am trying to ping my ISP gateway as well as DNS server but I am getting this error. How do I solve this problem? This problem indicate networking...
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POLL RESULTS: Do you use a firewall on dedicated Linux / BSD box?
In last months reader poll I asked about Firewall on dedicated UNIX / Linux box. Do we really need a firewall? Personally, I install firewall on all boxes to filter out unwanted junk and IPs; even if...
View ArticleHow to install and edit desktop files on Linux (Desktop entries)
Linux comes with three commands for developers, sysadmins and users to set up a hierarchy of applications, typically displayed as a menu. In other words, these commands allow third-party software to...
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A cautionary tale about locking Linux & FreeBSD user accounts
Like every other solo developer and sysadmin, I do stuff using ssh. Some stuff is automated using scripts, and others require ssh login. For example, one of my scripts logs into my Linux and FreeBSD...
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How to protect Linux against rogue USB devices using USBGuard
usbgurd You deployed a perfect firewall and other network security policies preventing unauthorized access to the user's desktop computer over a network. However, you still need to block USB device...
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DNS settings to avoid email spoofing and phishing for unused domain
As you may know, email spoofing allows attackers to pose as someone else to gain illegal profit. For example, I only use webmaster@cyberciti.biz for communication, but someone might create a...
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How To Set Up SSH Keys With YubiKey as two-factor authentication (U2F/FIDO2)
Patreon users download the PDF version. All Linux and Unix servers are managed manually or by automation tools such as Ansible using ssh. For example, say you have a server at Linode or AWS. Then you...
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How to skip ChatGPT from WireGuard or OpenVPN on Linux
nixCraft Patreon supporters can download the PDF version here. ChatGPT (short for Chat Generative Pre-trained Transformer) is a chatbot by OpenAI. It provides answers to your queries using learning...
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nvtop – Awesome Linux task monitor for NVIDIA, AMD & Intel GPUs
Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post nvtop – Awesome Linux task monitor for NVIDIA, AMD & Intel GPUs appeared first on nixCraft.
View ArticleHow to upgrade FreeBSD 13.1 to 13.2 release
The FreeBSD Release Engineering Team is announcing the availability of FreeBSD version 13.2-RELEASE on 11/April/2023. It is the third release of the stable/13 branches. I updated my FreeBSD version...
View ArticleSetting up VSCode for Ansible Lightspeed AI in Ubuntu 22.04 desktop
Red Hat launched the Ansible Lightspeed Code Assistant Generative AI with IBM Watson Code Assistant in May 2023. This preview is now available to all Ansible users, allowing them to explore the...
View ArticleDebian Linux 12.1 released with Security Updates
Debian Linux project announces the first update of the Debian project's stable distribution, Debian 12 (codename "bookworm") named Debian 12.1. This update mainly addresses security issues and...
View ArticleHow to block AI Crawler Bots using robots.txt file
Are you a content creator or a blog author who generates unique, high-quality content for a living? Have you noticed that generative AI platforms like OpenAI or CCBot use your content to train their...
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