Networking / System

  Introduction to Artificial Intelligence & Generative AI What is Artificial Intelligence? AI refers to machines or systems designed to simulate human intelligence. Uses algorithms to process data and make decisions. Encompasses areas like machine learning, natural language processing. Key Types of AI Narrow AI (Weak AI): Task-specific systems (e.g., Siri, chatbots). General AI (Strong AI): Hypothetical machines with human-like reasoning. Superintelligent AI: AI that surpasses human intelligence (future possibility). What is Generative AI? Generative AI creates new content, such as images, text, or music. Uses advanced machine learning techniques like neural networks. Examples: DALL·E (images), GPT (text), and AIVA (music composition). How Does Generative AI Work? Trains on large datasets (e.g., images, text). Learns patterns, structures, and features in data. Generates original content based on learned patterns. A...

Streamline Your IT Operations RakConsultIT Efficient and cost-effective IT Operation for businesses of all sizes, Cloud Consulting Services, Cyber Security.     AWS Cloud, Azure Cloud, SIEM, EDR/MDR/XDR, Active Directory, Azure Entra        

  What is a SIEM solution I am updating my blog after quite a while and will try to talk about Cyber Security. In today’s blog we are going to talk about a term used commonly in Cyber Security, which is SIEM. SIEM stands for “Security Incident and Event Management” It is a combination of security information management and security event management. SIEM keeps track of the security posture of an organization by collecting security related data of information an organization in form of logs and store them for analysis for upcoming threats and it also monitors the infrastructure of an organization (both on premises and cloud based.) There are different SIEM solutions offered, some of the common and popular ones are Rapid7, Sentinel One, Splunk, ActZero. Most of these solutions can also integrate with next generation EDR/XDR/MDR solutions like Crowd Strike as well. SIEM is the center of organizations security operations (SOC).  Some of the salient features of a...

This simple script will show the total memory, free memory and percentage of memory used. Have tested it on Ubuntu 14/16 but will work on CentOS as well #!/bin/bash freemem=$(($(free -m |grep "buffers/cache:"|awk '{print $4}'))) totalmem=$(($(free -m |awk 'NR==2 {print $2}'))) usage=$(($totalmem-$freemem)) echo "Memory used: $usage" echo "Total memory: $totalmem" usage=$(($usage*100 / $totalmem)) echo "Usage percentage: $usage" echo "Free memory: $freemem" echo "$TIMESTAMP $totalmem $usage $freemem"

/sbin/ifconfig eth1:1 202.141.240.174 netmask 255.255.255.248 /sbin/ifconfig eth1:1 up /sbin/iptables -t nat -A PREROUTING -j DNAT -d 202.141.240.174 --to-destination 192.168.0.22 /sbin/iptables -t nat -A POSTROUTING -j SNAT -s 192.168.0.22/32 -d 0/0 --to-source 202.141.240.174 Another useful link http://home1.gte.net/res0psau/security/nat-on-linux.html http://www.cyberciti.biz/faq/linux-demilitarized-zone-howto/

You have configure Kerberos and Winbind to join Active Directory. Configure Samba to use ADS in globals [global] workgroup = ******* realm = ******.COM.PK server string = ***** security = ADS map to guest = Bad Uid password server = ip adrress of Domain Controller log file = /var/log/samba/log.%m max log size = 50 idmap uid = 100000-200000 idmap gid = 100000-200000 cups options = raw [homes] comment = Home Directories read only = No browseable = No [printers] comment = All Printers path = /var/spool/samba printable = Yes browseable = No [Test] path = /d/infopool valid users = rahat.khan, *******\Administrators, *****\rahat.khan admin users = ******\rahat.khan write list = ******\rahat.khan acl group control = Yes guest ok = yes

fwbackups is a feature-rich user backup program that allows you to backup your documents anytime, anywhere. It is completely free to download and use without any sort of trial or restrictions. In fact, fwbackups is open-source, which means anybody can use, share it and improve it. If you would like to help develop or test fwbackups, see the developer's page. fwbackups offers a simple but powerful interface that permits you to perform backups with ease. With support for scheduled backups and backing up to remote computers, you will never have to worry about losing your data again. For more information, select a page from the menu on the left of this text. fwbackups - Features fwbackups™ has a rich interface that is both powerful and easy to use. Here are just a few of its many features: * Simple interface: Configuring new backups or restoring documents from a previous backup is a breeze. * Cross-platform: It doesn't matter if you're running Microsoft Windows, Mac OS ...

Create Config File for vboxcontrol service script # mkdir /etc/virtualbox # touch /etc/virtualbox/machines_enabled The file “machines_enabled” located in “/etc/virtualbox” is where we list the names of the Guest VM’s that we want vboxcontrol to control. To get a list of your current Guest VM names execute the following command and notice the name is in ” “: $ VBoxManage list vms "Windows XP" {5087b02a-5816-4c76-b302-c13175623023} "Windows 7" {bcae660a-f627-46d6-8c95-9da97363eeea} "Windows 2008" {3907173c-cc15-4820-a930-f0bb3c13cb7e} Add Guest VM’s to “machines_enabled” include one VM name per line # vi /etc/virtualbox/machines_enabled Windows XP Windows 7 Windows 2008 Add VirtualBox VM Service script Create new init.d service script file and give execute permissions # touch /etc/init.d/vboxcontrol # chmod 755 /etc/init.d/vboxcontrol Copy the following code into file “/etc/init.d/vboxcontrol” #! /bin/sh # vboxcontrol Startup script for VirtualBox Virtual ...

PacketFence is a fully supported, trusted, Free and Open Source network access control (NAC) system. Boasting an impressive feature set including a captive-portal for registration and remediation, centralized wired and wireless management, 802.1X support, layer-2 isolation of problematic devices, integration with the Snort IDS and the Nessus vulnerability scanner; PacketFence can be used to effectively secure networks - from small to very large heterogeneous networks. PacketFence

Transferring some or all of the FSMO Roles from one DC to another? Windows 2000/2003 Active Directory domains utilize a Single Operation Master method called FSMO (Flexible Single Master Operation), as described in Understanding FSMO Roles in Active Directory. In most cases an administrator can keep the FSMO role holders (all 5 of them) in the same spot (or actually, on the same DC) as has been configured by the Active Directory installation process. However, there are scenarios where an administrator would want to move one or more of the FSMO roles from the default holder DC to a different DC. Moving the FSMO roles while both the original FSMO role holder and the future FSMO role holder are online and operational is called Transferring, and is described in this article. The transfer of an FSMO role is the suggested form of moving a FSMO role between domain controllers and can be initiated by the administrator or by demoting a domain controller. However, the transfer process is not ini...

I installed my first Sun Virtual Box on a Dell PowerEdge 2650 running WIndows 2003 and a Super Micro Server running Red Hat Linux ES 5.3. Its support for 64 bit OS is amazing

By the Grace of Allah, today I installed my first Hacbkintosh iDeneb 10.5.8 Lite on a Dell Optiplex GX620 with PIV 3.2 HT, 2 GB Ram, 80 Gb SATA Hitachi HD,DVD Combo, Broadcom NetXtreme 5751 Gigabit, AC97 Audio card, Intel GMA 950 graphics card. I selected Voodo Kernel, with Seat belt and some other fixes, Chamleon 2 bootloader and appropriate drivers and install worked fine and smooth.

Mr Zia Imran has taken over the role of new MD PSEB, we wish him success.

A high performance Internet filtering proxy server for Linux/Windows Cyan Secure Web Proxy

Here is a nice iPhoneApp which you can use to share your experiences with your friends. TellMyStory

Want to setup your own Network Storage ?, then check out FreeNAS

A bundled package of Apache Tomcat, Postfix, Mysql, Lucene offering email,calendering and collaboration. It is an Open Source software for Linux, Mac OS. It also includes SpamAssasin and ClamAV Zimbra

A light Slackware Linux modification. A good distribution for beginners. Absolute Linux

A nice tool for system/data recovery System Rescue CD

Follow these links for removal of Confiker worm For Windows XP For Windows VISTA