Blogs
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Releasing Reserved Memory on a VPS
Tuesday, December 31, 2024 in
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By default, the Linux kernel reserves a block of memory for kdump, and its size is controlled by the crashkernel parameter. Most application developers rarely trigger kernel panics, so you can recover this memory by editing /etc/default/grub. If you …
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How a vendor bypasses DNS blocking
Friday, December 13, 2024 in Offense & Defense
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Recently I noticed that the DNS public service IP is receiving abnormal traffic—tens of identical requests for the same domain every second, completely ignoring the DNS protocol and the global TTL value. At first I thought the IP belonged to an …
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WeChat Read Auto Check-in & Read-Time Boost
Thursday, December 05, 2024 in WeRead Experience Sharing
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Just to get a cheaper WeChat Read membership. This document may be out of date; for the latest version visit the open-source repository: https://github.com/jqknono/weread-challenge-selenium WeChat Read Rules Offline reading counts toward the total, …
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Turning off the discrete GPU to save power
Monday, November 18, 2024 in Tools
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This post is for friends who rarely shut down their desktop and often remote into it to work. My daily workstation and gaming rig are the same machine, with a 4K 144 Hz monitor. I normally leave the discrete GPU on just to make everyday interactions …
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Google Translate API Usage Guide
Friday, November 15, 2024 in Free Services
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If you need to automate translation tasks via API, the Google Translate API is a solid choice. Its translation quality may be slightly behind DeepL, but it offers better value—especially with 500,000 free characters every month. Product Overview …
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IPv6 Disconnect Issue on Long-Running Windows Server 2019
Wednesday, November 06, 2024 in Tricky Issues
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My Windows Server 2019 rarely shuts down; under a China Telecom/Redmi router, every time IPv6 is renewed, the local IPv6 connection shows “No Internet access.” Rebooting the machine or toggling the IPv6 feature fixes it, while Linux doesn’t exhibit …
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snort
Friday, June 28, 2024 in Security
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snort Snort https://www.snort.org/ Protect your network with the world’s most powerful Open Source detection software. What is Snort? Snort is the foremost Open Source Intrusion Prevention System (IPS) in the world. Snort IPS uses a series of …
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Third-party Library Pitfalls
Friday, June 28, 2024 in Chat
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Third-party library pitfalls Today we talked about a vulnerability in a recently released third-party logging library that can be exploited with minimal effort to execute remote commands. A logging library and remote command execution seem …
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Design Specification Template
Friday, June 28, 2024 in Chat
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Design Specification Template Detailed Design of XXX System / Sub-system System Name XXX System Author XXX — — Submission Date 2021-06-30 Revision History Revised Version Change Description Date of Change Author v1.0 XXXXXXX 2021-06-30 …