Tag: SysAdmin

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On 29 April 2026, security researchers at Theori (Xint Code) publicly disclosed CVE-2026-31431, known as “Copy Fail.” It is a local privilege escalation flaw in the Linux kernel’s AF_ALG cryptographic... The post Copy Fail Linux Vulnerability (CVE-2026-31431) appeared first on Heart Internet.

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The rules around SSL certificates are changing across the whole internet. The good news is that for most customers, very little will change on your side. This is an industry-wide... The post SSL Certificates are changing. Here’s what you need to know. appeared first on Heart Internet.

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We’re incredibly proud to celebrate our Site Reliability Engineering team, who have won the Gapstars Innovation Award for their outstanding work improving platform stability, security, and visibility across our shared... The post Heart Internet Win Gapstars Innovation Award 2026 appeared first on Heart Internet.

If you want to improve your website you probably need to do A/B testing, otherwise known as split testing. Instead of guessing, A/B testing allows you to experiment more scientifically.... The post A/B Testing Explained: A Practical Guide To Better Results | Part 1 appeared first on Heart Internet.

Account security matters, and switching on two-factor authentication (2FA) is a quick win. 2FA adds a second check during the sign-in process, so even if someone compromises your password, they still can’t get in.  To enable 2FA:  Step 1: Open your... The post How to enable two-factor authentication (2FA) on your Heart Internet account appeared first on Heart Internet.

I'm trying to get our domain connected windows laptops to only connect to our wifi network when it is in range but I still want the users to be able to connect to other networks when away from site. Google has the option "restrict only if a managed Wi-Fi network is in range" that can accomplish this for chromebooks. Is there an option to accomplish this via Group policy?

I recently implemented Filebeat on my IIS server to parse and send logs to an ELK stack (Elasticsearch, Logstash, Kibana) for tracking threats and monitoring performance on my server. I have found that a few times a day one or more of our domains will get flooded with hundreds of requests. They are most often GET or POST requests for various .php files. I know there are official ways to configure temporary blocks based on floods of requests using dynamic blocking in IIS. There are times that some of my sites might legitimately receive a flood of requests, so I have been hesitant to do that. None of my sites run php so what I would love to have would be a tool or configuration that, at the server level, can watch request paths for php files and just blackhole all future requests from that IP for some period of time. I already have my server set up to automatically return a 404 for any php file, or any of the other frequently scanned paths like wordpress, before calling

If we have multiple ASP.NET Framework 4.7.2 web apps deployed on the same IIS server, can we specify the same TempDirectory? Meaning the attribute TempDirectory of the web.config compilation section under system.web. It looks like the system puts the actual files in some structure of sub folders, so it looks like there will be separation. But I'm not sure... In case it matters, several of our web apps are the same code base, but with different configurations per site and virtual folder.

Imagine an environment with two sites, HQ and Branch. Both sites have a domain controller. A client from Branch wants to locate the optimal domain controller, and it so happens that the first query is performed against a domain controller from HQ. The most optimal domain controller should be the one from the Branch site. However HQ is the closest site to Branch. Will DSClosestFlag then be 1? Or does the domain controller know that there is a dedicated domain controller in Branch and therefore set it to 0? If the flag is 1, this would lead to selection of a non-optimal domain controller? I have already checked the official Microsoft documentation, but with the wording it is not exactly clear to me, when the domain controller thinks it is closest or not.

I'm checking Nginx logs by tail -f /var/log/nginx/error.log, the Nginx is running in docker container, and seeing below errors: root@8cf99e6a536b:/# tail -f /var/log/nginx/error.log 2026/05/05 17:00:21 [error] 177#177: *126041 open() "/var/www/html/public/xi-xing-ji-season-3-episode-18-subtitle-indonesia" failed (2: No such file or directory), client: 47.141.29.68, server: server.com, request: "GET /xi-xing-ji-season-3-episode-18-subtitle-indonesia HTTP/1.1", host: "anichin.dev", referrer: "https://anichin.dev/" 2026/05/05 17:00:39 [error] 177#177: *126043 open() "/var/www/html/public/ads.txt" failed (2: No such file or directory), client: 192.184.75.253, server: server.com, request: "GET /ads.txt HTTP/1.1", host: "server.com" 2026/05/05 17:03:35 [error] 176#176: *126049 open() "/var/www/html/public/ads.txt" failed (2: No such file or directory), client: 192.184.75.253, server

I have a Parent/Child domain setup in a test environment. The parent domain contains 3 DCs with DC01 holding the FSMO roles. The Child domain also has 3 DCs with DC01 holding the PDC role for the Child domain. We doing some testing where we want to disconnect the child domain for about a month or 2 to do some stand alone testing. In Active Directory Sites & Services we have 2 Sites setup. Site 1 (Parent Domain): P-DC01, P-DC02, P-DC03, C-DC03 Site 2 (Child Domain): C-DC01, C-DC02 The reason for this topology is so that the Child domain (DC03) information remains synced with the Parent domain while the Child Domain is disconnected and incase of Domain Failure while it is disconnected from testing. While the Child Domain is disconnected we want to make sure users can login without an issue. When the Child Domain is connected we have created an Site Link so the Parent Domain Site sync with the Child Domain site. There are no DC entries in

I have many Azure OpenAI and Azure Foundry resources. How can I view, for each Azure OpenAI and Foundry resource, which IPs are allowed to send requests? I want a list, e.g.: Resource A: 149.126.12.88; Resource B: [201.2.56.5, 5.59.59.1]; Resource C: All; Resource D: None; etc.

I'm checking Nginx logs by tail -f /var/log/nginx/error.log, the Nginx is running in docker container root@8cf99e6a536b:/# tail -f /var/log/nginx/error.log 2026/05/05 17:00:21 [error] 177#177: *126041 open() "/var/www/html/public/xi-xing-ji-season-3-episode-18-subtitle-indonesia" failed (2: No such file or directory), client: 47.141.29.68, server: server.com, request: "GET /xi-xing-ji-season-3-episode-18-subtitle-indonesia HTTP/1.1", host: "anichin.dev", referrer: "https://anichin.dev/" 2026/05/05 17:00:39 [error] 177#177: *126043 open() "/var/www/html/public/ads.txt" failed (2: No such file or directory), client: 192.184.75.253, server: server.com, request: "GET /ads.txt HTTP/1.1", host: "server.com" 2026/05/05 17:03:35 [error] 176#176: *126049 open() "/var/www/html/public/ads.txt" failed (2: No such file or directory), client: 192.184.75.253, server: server.com, request: &qu

I'm connecting to a mobile computer (SBC) using wifi. This computer is transmitting data continuously, in the form of small and frequent UDP packets. I receive the data fine on my PC, but while the data is being transmitted, my SSH connection hangs. When the data stops, SSH comes back. There should be enough bandwidth, iperf shows 125Mbps and the data takes only 20 to 40 Mbps. Are there any reasons that of many small UDP packets might make this happen, other than consuming the bandwidth? Could this create some relevant overhead that causes this? How could this completely hang SSH, not just make it slow? Can I tune the SSH somehow, or make the data stream somehow to ensure I have SSH always somewhat responsive? EDIT: Here is some more information. I'm transmitting 2600 packets per second. There's no data loss in the UDP stream. The two machines are connected directly to each other, the SBC is operating in AP mod

I have a COM+ proxy that returns Access Denied. The following command from a computerA to ServerA in an admin powershell fails: Get-WmiObject Win32_OperatingSystem -ComputerName ServerA and this returned: Get-WmiObject : Accès refusé. (Exception de HRESULT : 0x80070005 (E_ACCESSDENIED)) Au caractère Ligne:1 : 1 + Get-WmiObject Win32_OperatingSystem -ComputerName ServerA + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [Get-WmiObject], UnauthorizedAccessException + FullyQualifiedErrorId : System.UnauthorizedAccessException,Microsoft.PowerShell.Commands.GetWmiObjectCommand The same command from the same account (a domain admin) from computerB, works as expected without error. ComputerB and computerA are both Windows 10 1607 machine, same network, disabled firewall on both computers and server for the test. I know, old and outdated, but we are in th