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- 09:03, 28 March 2024 Zentyal unable to ping gateway from zentyal server (hist | edit) [689 bytes] Saurabh (talk | contribs) (Created page with " Home > Zentyal > Zentyal unable to ping gateway from zentyal server After deploying Zentyal as internal server with just one interface (no proxy / Gateway feature), from SSH prompt we are unable to ping the gateway IP from the Zentyal server. This is after adding ICMP allowed in all four types of packet filter. Note that from other machines we are able to ping Zentyal (Incoming). Only outgoing ping to gateway from Zentyal was found not to be w...")
- 09:01, 28 March 2024 Zentyal (hist | edit) [186 bytes] Saurabh (talk | contribs) (Created page with " Home > Zentyal *Zentyal Configure local recursive DNS for LAN systems Home > Zentyal")
- 09:01, 28 March 2024 Zentyal Configure local recursive DNS for LAN systems (hist | edit) [1,064 bytes] Saurabh (talk | contribs) (Created page with " Home > Zentyal > Zentyal Configure local recursive DNS for LAN systems To configure Zentyal DNS service as local recursive DNS for LAN systems use: # ssh to zentyal as normal user and use "sudo su -" to get root access # Edit file '<tt>/etc/zentyal/dns.conf</tt>' (Path for this in below reference link is wrong) with #:<pre> #:: intnets = 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16 #:</pre> # I could not find option to restart DNS service so I chos...")
- 08:16, 28 March 2024 Paloalto firewall clear application usage data (hist | edit) [1,668 bytes] Saurabh (talk | contribs) (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > Paloalto troubleshooting options > Paloalto firewall clear application usage data On the Policy -> security page we can see some values related to each rule such as: * When was the rule created * When was it last modified * No. of hits etc. Along with this we also see a link showing count / types of application identified/allowed based on that rule. In most organizati...")
- 08:08, 28 March 2024 Solve 2x2 Rubik's cube (hist | edit) [4,420 bytes] Saurabh (talk | contribs) (Created page with " Home > Hardware > Solve 2x2 Rubik's cube =Notation= There are six notations for: ; L : Left ; R : Right ; U : Up ; D : Down ; F : Front ; B : Back In these if the notations are same as above then we need to rotate clock-wise. Assume clock to be present on the floor, on the wall on the left and on the wall on the front. Accordingly calculate clockwise for both U/D (Clock on floor), L/R (Clock on left wall) and F/B (Call on wall in front of you)...")
- 04:53, 26 February 2024 Malware download links (hist | edit) [760 bytes] Saurabh (talk | contribs) (Created page with "Home > Security tips > Malware download links During a recent testing of XDR needed a few malware to see if XDR can even detect these based on AI / heuristics without depending too much on hashes. For that downloaded required malware from: * https://www.ikarussecurity.com/en/private-customers/download-test-viruses/ * https://www.spyshelter.com/security-test-tool/ * https://www.wicar.org/test-malware.html * http://www.tekdefense.com/downloads/malw...")
- 04:30, 26 February 2024 AI tools (hist | edit) [1,675 bytes] Saurabh (talk | contribs) (Created page with "Home > Online tools and utilities > AI tools By using Very large language models we see emergent behavior and capabilities that we do not see in other smaller models. With the rise of LLMs we have a large no. of AI tools at disposal. Some of them are described below. =Used tools= ; https://www.perplexity.ai/ : This allows asking very specific queries and getting a precise answer. The best part of this tool is precision and also references based...")
- 03:58, 26 February 2024 Suse working with SMT server (hist | edit) [4,167 bytes] Saurabh (talk | contribs) (Created page with "Home > Suse > Suse working with SMT server =About SMT= To help with product updates and registrations centrally via a local server without requiring each server to have outgoing connectivity directly to Suse Customer Center (SCC) or Internet. This also helps in avoiding repeat download of OS update packages for each server over WAN link. =Error while registering an internal machine with local SMT= We might see error such as below while using lo...")
- 03:30, 26 February 2024 Reset ESXi root password (hist | edit) [2,163 bytes] Saurabh (talk | contribs) (Created page with "Home > VMWare platform > VMWare vSphere or ESXi > Reset ESXi root password Official KB at https://kb.vmware.com/s/article/1317898 suggests only option to reset password in ESXi 3.5 and above is by reinstalling. However as per referece link we have a few other options such as: '''Note that the below options are not validated in production yet''' ; Host profiles : Via vCenter extract existing host's host-profile. Then edit the host profile an...")
- 10:04, 25 February 2024 Useful Windows powershell options (hist | edit) [733 bytes] Saurabh (talk | contribs) (Created page with "Home > Windows > Windows Desktop Tools or Utilities > Useful Windows powershell options =Test-NetConnection= We can test network connectivity to a remote computer / port via: <pre> Test-NetConnection [[-ComputerName] <String>] -Port <Int32> [-InformationLevel <String>] [<CommonParameters>] </pre> For exmaple: <pre> Test-NetConnection -ComputerName 10.1.1.1 -Port 443 -InformationLevel "Detailed" </pre> This can be a useful alternative to Linux...")
- 09:30, 25 February 2024 Rocky 9.x Issues while connecting to some wireless networks using Broadcom wireless (hist | edit) [1,634 bytes] Saurabh (talk | contribs) (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > Network Configuration > Rocky 9.x Issues while connecting to some wireless networks using Broadcom wireless For messages such as below repeated multiple times in '<tt>/var/log/messages</tt>': <pre> Feb 25 13:45:28 barjatiyarklp wpa_supplicant[1660]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-22 retry=1 </...")
- 04:13, 20 February 2024 Live Optics (hist | edit) [1,262 bytes] Saurabh (talk | contribs) (Created page with "Home > VMWare platform > VMWare Platform Miscellaneous > Live Optics =Getting current resource utilization= We can use liveoptics for getting current resource utilization such as: * 95% IOPS * Peak and 95% CPU usage * Peak and 95% memory usage * Overall storage usage etc. for a physical host, hypervisor such as Hyper-V or ESXi, etc. This information is critical if we are trying to size a new environment during migration - P2V or V2V or hard...")
- 04:07, 20 February 2024 RVTools (hist | edit) [1,524 bytes] Saurabh (talk | contribs) (Created page with "Home > VMWare platform > VMWare Platform Miscellaneous > RVTools =Getting information about ESXi or vCenter environment= We can get detailed information about ESXi or vCenter environment including information on health issues such as: * Connected CD/DVD drive * CPU/Memory configuration issues * Zombie disks by using RV tools. We only need to give ESXi host / vCenter information (IP, Username, Password) and then within a minute we can see all t...")
- 12:39, 4 December 2023 Securing organizations IT infrastructure from modern threats (hist | edit) [29,052 bytes] Saurabh (talk | contribs) (Created page with "Home > Security tips > Securing organizations IT infrastructure from modern threats To secure an organization against modern threats consider following: ; User VLANs gateway at firewall : All VLANs should be only L2 at core / distribution / access level. Gateway for all users should be at perimeter firewall. All traffic between two user VLANs should go via firewall. : In this case have separate VLANs for printers, Biometric devices, CCTV, etc....")