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(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)- 07:14, 11 June 2023 Saurabh talk contribs created page CentOS 8.x Unattended nomachine (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x remote access > nomachine > Unattended nomachine In case of machine which is only booted but no graphical user login has been done yet, nomachine remote may not work. In such cases if nomachine is leading to blank screen then try: # Edit '<tt>/usr/NX/etc/server.cfg</tt>' and set: #:<pre> #:: CreateDisplay 1 #:: DisplayOwner "saurabh" #:</pre>...")
- 07:08, 11 June 2023 Saurabh talk contribs created page Rocky 8.x New laptop OS configuration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > System Administration > Rocky 8.x New laptop OS configuration =OS installation= # Prepare bootable Rocky Linux 8 USB using: #:<pre> #:: dd if=Rocky-8.7-x86_64-dvd1.iso of=/dev/sdd #:: sync #:</pre> #::'''Assumes umount /dev/sdd* is done and that /dev/sdd does not has any critical data''' before itself. #: This can also be done using Rufus in Windows by using dd...")
- 05:41, 11 June 2023 Saurabh talk contribs created page VCenter 6.7 or 7 certificate expiry leading to 503 service not available error (Created page with "Home > VMWare platform > VMWare vCenter > vCenter 6.7 or 7 certificate expiry leading to 503 service not available error If vCenter internal certificates expire we may get 503 service unavailable error or other errors as shown at VMWare KB https://kb.vmware.com/s/article/76719 To solve this use: # You can validate whether you have this issue or not via steps explained at https://kb.vmware.com/s/article/79248 ## Downlooad checksts script from...")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x System Administration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration *Rocky 9.x New machine configuration Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x New machine configuration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration *Rocky 9.x Configure new laptop for personal use Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x Configure new laptop for personal use (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration > Configure new laptop for personal use =OS installation= # Prepare bootable Rocky Linux 9 USB using: #:<pre> #:: dd if=Rocky-9.0-x86_64-dvd.iso of=/dev/sdd #:: sync #:</pre> #::'''Assumes umount /dev/sdd* is done and that /d...")
- 11:26, 31 May 2023 Saurabh talk contribs created page Comparing MDM with DLP with End-point security (Created page with "Home > Security tips > Comparing MDM with DLP with End-point security Endpoint Security, Data Leak Prevention (DLP), and Mobile Device Management (MDM) are three distinct but complementary technologies that address different aspects of security in an organization. Here's a comparison of these three and their typical use cases: =Endpoint Security= This focuses on securing endpoints, or end-user devices like desktops, laptops, and mobile devices. En...")
- 11:06, 31 May 2023 Saurabh talk contribs created page Generate new CSR by referring existing details from current certificate including private key (Created page with "Home > Security tips > Generate new CSR by referring existing details from current certificate including private key This internally refers Openssl. '''This is not fully tested.''' To generate a new CSR from existing certificate and key, then sign it and then import it use: # On existing server with certificate and key, open mmc -> Certificate # Export existing certificate with key in pfx format. #: Need to give a password while exporting...")
- 06:40, 24 May 2023 Saurabh talk contribs created page Ubuntu HPC Create new user (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Create new user Once HPC setup is done properly, to create any new user (eg user3) please use below steps: #Create user using: #:<pre> #:: useradd -m -d /export/home/user3 -s /bin/bash user3 #:: passwd user3 #:</pre> #Create SSH key and configure them as authorized using: #:<pre> #:: su - user3 #:: ssh-keygen #:: cat ~/.ss...")
- 05:01, 22 May 2023 Saurabh talk contribs created page Executing powershell script on Windows machine (Created page with "Home > Windows > Windows Desktop Tools or Utilities > Executing powershell script on Windows machine =Normal execution of powershell script= To execute powershell script in Windows use: * Right click on powershell script and use "Run with powershell" option OR * Open a powershell Window. Run powershell script with full / relative path. Eg "cd C:\Users\Example\Downloads & .\Script1.ps" =Changing powershell Execution Policy= However, executio...")
- 10:51, 19 May 2023 Saurabh talk contribs created page Rocky 8.x GIMP (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > GIMP =GIMP shortcuts= We can use following shortcuts in GIMP: ; p paintbrush (Tools -> Paint Tools -> Paint Brush) : We can click to paint using selected brush. : Brush selection - Windows -> Dockable Dialogs -> Tool options : Drawing Line - If we click at a point and then go to other point. On other po...")
- 10:18, 19 May 2023 Saurabh talk contribs created page Windows 10 Enable very long file paths (Created page with "Home > Windows > Windows 10 > Enable very long file paths To enable very long paths in Windows use: # Open registry using '<tt>regedit.exe</tt>' ## Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem ## Edit (or create new if required) LongPathsEnabled as 32-bit D-Word value ## Set the value for LongPathsEnabled to 1. # In case of domain environments also open Group Policy Editor '<tt>gped...")
- 07:34, 17 May 2023 Saurabh talk contribs created page Simple while loop with count in shell script (Created page with "Home > Shell scripting > Useful bash shell scripts > Simple while loop with count in shell script If we need to execute something specific no. of times, we can use while loop with count such as: <pre> q=0; while q -lt 3 ; do ((q++)); echo $q; done </pre> Here update value of limit from 3 to the desired number of loop executions. Also instead of echo $q; put the command to be executed again and again. For example to generate 10 random pa...")
- 07:30, 17 May 2023 Saurabh talk contribs created page Remotely change Windows password (Created page with "Home > Windows > Windows Desktop Tools or Utilities > Remotely change Windows password Normally for safety change password option comes after we press 'Ctrl+Alt+Del'. This cannot be done remotely as the sequence would get consumed by local system, instead of it being transmitted to remote machine over remote desktop. In such cases to change password use: # Create a new shortcut with target value of: #:<pre> #:: explorer.exe shell:::{2559a1f2-...")
- 07:17, 17 May 2023 Saurabh talk contribs created page Paloalto firewall captive portal (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > Captive Portal For captive portal via AD we need to add a LDAP server, create group mapping, create authentication profile and optionally create authentication sequence as explained at Paloalto firewall AD integration. Here for captive portal select appropriate AD Group eg "Captive Portal Users" instead of VPN related group as explain...")
- 06:51, 17 May 2023 Saurabh talk contribs created page Paloalto firewall AD integration (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > AD integration To integrate palo-alto firewall with AD use following steps: # Finding base DN of AD and also DN of authenticating service user ## Login into system connected to AD and open "Active Directory Users and Computers". ## Enable View -> "Advanced Features". Without this we cannot see LDAP attributed such as DN required for integr...")
- 05:45, 17 May 2023 Saurabh talk contribs created page Microsoft Exchange smart host or Send connector settings (Created page with "Home > Windows > Microsoft Exchange Server > Smart host or Send connector settings It might be required to send outgoing emails to a particular domain (or all outgoing emails) via a SMTP Gateway / Smart host or Send connector. To configure the same (or view existing configuration) use: # Login into exchange admin center via Web UI # Go to "Mail Flow" -> "Send connectors" # Here we can ei...")
- 05:37, 17 May 2023 Saurabh talk contribs created page Ubuntu disable automatic updates (Created page with "Home > Ubuntu > Disable automatic updates =Disable automatic-update via CLI= We can disable automatic update in Ubuntu via CLI using: # Edit '<tt>/etc/apt/apt.conf.d/20auto-upgrades</tt>' so that it has: <source type=shell> APT::Periodic::Update-Package-Lists "0"; APT::Periodic::Download-Upgradeable-Packages "0"; APT::Periodic::AutocleanInterval "0"; APT::Periodic::Unattended-Upgrade "0"; </source> =Disable autom...")
- 12:33, 12 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Move backups to DR (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Move backups to DR == Create storage pool for offsite pool == #Create storage pool for offsite pool #:<pre> #::DEFINE STGPOOL <offsite-tape-storage-pool-name> LTOCLASS pooltype=copy description="Description for the Offsite tape pool" maxscratch=2 collocate...")
- 10:18, 12 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Administrative configuration backup (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Administrative configuration backup #Login to dsmadmc console #:<pre> #::> dsmadmc #::> DEFINE SCRIPT SP_CONF DESCRIPTION='Backup SP devconf and volhist file' #::> UPDATE SCRIPT SP_CONF "backup devconf file=/spdata/spback/devconf.out" #::>...")
- 08:19, 12 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Reports configuration (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Reports configuration #Schedule information #:<pre> #::SELECT associations.domain_name, associations.node_name, associations.schedule_name,client_schedules.description, client_schedules.action, client_schedules.options,client_schedules.objects, client_sc...")
- 07:29, 12 May 2023 Saurabh talk contribs moved page RHEL 8.x Spectrum Protect Configure Tape and Define the class to RHEL 8.x Spectrum Protect Configure Tape, Define the class and storage pool creation
- 07:18, 12 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Backup Archive restoration procedure (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Backup Archive restoration procedure #Login to the webgui client <https://<ipaddress>:9081/bagui> #Go to Retrieve tab #Click on the latest backup #Go to the location of file / folder to restore #Select the file / folder and click the uparr...")
- 06:21, 12 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Web client installation in RHEL client (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Web client installation in RHEL client #On Backup server, create sprestore user #:<pre> #::dsmadmc #::register admin sprestore admin123 sessionsecurity=trans #:</pre> #On RHEL client install below packages #:<pre> #::yum localinstall gsk...")
- 06:07, 12 May 2023 Saurabh talk contribs moved page RHEL 8.x Spectrum Protect Backup Agent installation in client to RHEL 8.x Spectrum Protect Backup Agent installation in RHEL client
- 07:29, 11 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Miscellaneous (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Miscellaneous == Configure admin password to never expires == #Configure admin password to never expires #:<pre> #::update admin <username> passexp=0 sessionsecurity=TRANSitional #::Ex: #::update admin admin passexp=0 sessionsecurity=TRANSitional #:</pre> Ma...")
- 07:50, 10 May 2023 Saurabh talk contribs created page Rocky 8.x LibreOffice Calc Rows auto-number (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > LibreOffice Calc > Rows auto-number In case of rows requiring numbering such as Serial No with values 1,2,3,4, etc. instead of typing the numeric value if we use formula <pre> =Row(A2)-1 </pre> For second row, 1st column to have number 1. Then if...")
- 05:40, 10 May 2023 Saurabh talk contribs created page Rocky 8.x LibreOffice Calc (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > LibreOffice Calc *Rocky 8.x LibreOffice Calc Rows auto-number There are older articles on this at Libreoffice calc Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > Rocky 8.x LibreOffic...")
- 06:43, 9 May 2023 Saurabh talk contribs created page Enable automatic power on for synology NAS after power is restored (Created page with "Home > Storage server > Synology NAS > Enable automatic power on for synology NAS after power is restored Normally Synology NAS remains powered off, if power fails and then is restored. However, if you want NAS to power-on automatically after power is restored use: # Login into NAS Web UI # Go to Control Panel -> "Hardware and Power" # Under "Power Recovery" -> Enable "Restart automatically when power supply issue is fixed" Refer: * https://...")
- 06:41, 9 May 2023 Saurabh talk contribs created page Synology NAS (Created page with "Home > Storage server > Synology NAS *Enable automatic power on for synology NAS after power is restored")
- 03:18, 8 May 2023 Saurabh talk contribs created page Paloalto firewall packet capturing (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > Paloalto firewall packet capturing In case of complex issues packet capturing might give considerable insight. To capture packets on paloalto firewall use: # Go to Monitor -> Packet capture # First define the filters for packet capturing. These filters use source / destination IP, protocol number (eg 1 for ICMP), IP or not-IP, interface name, etc. parameters. There are...")
- 03:11, 8 May 2023 Saurabh talk contribs created page Paloalto firewall (Created page with "Home > Enterprise security devices or applications > Paloalto firewall *Paloalto firewall Configure dual ISP dual site-to-site IPSec VPN tunnel failover Home > Enterprise security devices or applications > Paloalto firewall")
- 03:11, 8 May 2023 Saurabh talk contribs created page Paloalto firewall Configure dual ISP dual site-to-site IPSec VPN tunnel failover (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > Configure dual ISP dual site-to-site IPSec VPN tunnel failover It is possible to have two site-to-site tunnels between two locations with matching proxy-IDs (Subnets). In this case the goal is to failover to second tunnel, if first IPSec tunnel is down due to ISP issue at either end. To conf...")
- 02:58, 8 May 2023 Saurabh talk contribs created page Microsoft Exchange Notifications Broker Service (Created page with "Home > Windows > Microsoft Exchange Server > Microsoft Exchange Notifications Broker Service Microsoft Exchange Notifications Broker Service is designed to run for very short period (eg 30 seconds) on OS boot and then stop. Hence we may see alerts for a service which is configured to run automatically on boot, but is in stopped state in monitoring tools (eg Zabbix) or in Server Manager. In case of monitoring tool use too...")
- 02:54, 8 May 2023 Saurabh talk contribs created page Check hard-disk for bad sectors (Created page with " Home > Hardware > Check hard-disk for bad sectors To check hard-disk for bad sectors, we can try and boot using Seagate SeaTools live CD ( https://www.seagate.com/in/en/support/downloads/seatools/ ) and then scan the disk for errors. This tools works properly even for non-seagate disks also at least in terms of testing for bad blocks. This would only work if the disk is directly readable by OS including SMART. This will not work in case of s...")
- 02:44, 8 May 2023 Saurabh talk contribs created page CentOS 8.x Zabbix Email notifications setup (Created page with "Home > CentOS > CentOS 8.x > Monitoring > Zabbix > Email notifications setup To receive email notifications about issues from Zabbix use: # Configure outgoing emails from Zabbix server using appropriate method eg CentOS 8.x postfix send email through relay or smarthost with smtp authentication # Login into Zabbix Web UI using Admin account # Go to Ad...")
- 08:12, 7 May 2023 Saurabh talk contribs created page CIS Benchmarks (Created page with "Home > Security tips > CIS Benchmarks We can go to https://www.cisecurity.org/cis-benchmarks/ and get benchmarks via email link for all main stream OS. These Benchmark are very exhaustive and cover exact steps to help in hardening a particular flavor of Linux or Windows. Download link might be https://downloads.cisecurity.org/#/ Home > Security tips > CIS Benchmarks")
- 08:04, 7 May 2023 Saurabh talk contribs created page NTP client configuration in Windows OS (Created page with "Home > Windows > Windows Desktop Tools or Utilities > NTP client configuration in Windows OS While in Windows via GUI we can only enable / disable NTP, various NTP related configuration can be done / viewed via command-line. See https://learn.microsoft.com/en-us/windows-server/networking/windows-time-service/windows-time-service-tools-and-settings?source=recommendations =Check existing NTP configuration= We can check NTP configuration via: <p...")
- 07:45, 7 May 2023 Saurabh talk contribs created page Rocky 8.x Zimbra Connect to Zimbra internal LDAP externally (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > Zimbra > Connect to Zimbra internal LDAP externally To connect to Zimbra LDAP externally: # Enable access to server via network firewall (OR Cloud firewall) # Enable access to port 389 of Zimbra server via firewalld: #:<pre> #:: firewall-cmd --zone=public --ad...")
- 07:36, 7 May 2023 Saurabh talk contribs created page Rocky 8.x Email Servers Zimbra (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > Zimbra *Rocky 8.x Zimbra Connect to Zimbra internal LDAP externally There are older articles on Zimbra at: *CentOS 8.x Zimbra *CentOS 7.x Zimbra configuration *Zimbra server configuration Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > ...")
- 04:52, 6 May 2023 Saurabh talk contribs created page Rocky 8.x setfacl and getfacl based permissions (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > System Administration > setfacl and getfacl based permissions Normally in Linux permissions are configured via User owner, Group owner and Others via read, write and execute permissions bits set for each type of access. However, if we have complex permission requirements then it is not possible to achieve the sam...")
- 04:44, 6 May 2023 Saurabh talk contribs created page Windows 11 (Created page with "Home > Windows > Windows 11 *Windows 11 show windows side by side Home > Windows > Windows 11")
- 04:43, 6 May 2023 Saurabh talk contribs created page Windows 11 show windows side by side (Created page with "Home > Windows > Windows 11 > Windows 11 show windows side by side In older version of Windows we could use 'Shift + Right click' in taskbar and get option to align windows side by side, cascaded, etc. However, in Windows 11 we need to hover over the maximize button in a window. While hovering we will get option to where should we place the window and we can click on the location to resize and place window accordingly. Refer: - https://answ...")
- 04:09, 6 May 2023 Saurabh talk contribs created page Windows 10 Getting IP address of the client connected to machine over RDP (Created page with "Home > Windows > Windows 10 > Windows 10 Getting IP address of the client connected to machine over RDP To know the IP address of the client connected to current Windows machine via RDP use: # Open Event viewer. This can be accessed via "Computer Management" # Go to Applications and Services Logs -> Microsoft -> Windows -> TerminalServices-LocalSessionManager # In the logs look for Source Network Address Refer: https://stackoverflow.com/quest...")
- 04:05, 6 May 2023 Saurabh talk contribs moved page Delete Recovery partition in Windows 10 to Windows 10 Delete Recovery partition
- 04:02, 6 May 2023 Saurabh talk contribs created page Rocky 8.x openconnect (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > openconnect *Rocky 8.x openconnect to connect to palo alto global protect VPN Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > openconnect")
- 04:02, 6 May 2023 Saurabh talk contribs created page Rocky 8.x openconnect to connect to palo alto global protect VPN (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > openconnect > Connect to palo alto global protect VPN To connect to a palo-alto global protect VPN we only need to know the VPN server public IP / FQDN (Firewall WAN interface IP where VPN is enabled). Then connect using: <pre> ope...")
- 07:52, 3 May 2023 Saurabh talk contribs moved page Spectrum Protect Server Installation to RHEL 8.x Spectrum Protect Server Installation
- 07:50, 3 May 2023 Saurabh talk contribs moved page Spectrum Protect backup agent installation in Backup Server to RHEL 8.x Spectrum Protect backup agent installation in Backup Server
- 05:34, 3 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Backup schedule status commands (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Backup schedule status commands #On the backup server, open backup console #:<pre> #::dsmadmc #:</pre> #Check How much data backed up in last 24 hours #:<pre> #::> SELECT entity, CAST(FLOAT(SUM(bytes)) / 1024 / 1024 / 1024 AS DECIMAL(8,2)) as...")
