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China’s Great Firewall Mysteriously Severed Connection to the World for an Hour

gizmodo.com Aj Dellinger 2025-10-31 20:25:05

For about an hour on Wednesday, China appeared to go dark—or at least internet access across the country did. According to an analysis published by the Great Firewall Report, a group that monitors internet censorship efforts in China, something happened in the wee hours of Wednesday morning that resulted in China blocking almost all traffic to TCP port 443, the standard port for HTTPS traffic. Between the hours of 12:34 and 1:48 AM in Beijing, someone was observed “unconditionally injecting for

Topics: access china firewall great port
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Cisco patches critical security hole in Firewall Management Center - act now

zdnet.com Steven Vaughan-Nichols 2025-11-11 03:52:05

Olemedia/iStock/Getty Images Plus via Getty Images ZDNET's key takeaways Cisco's Secure Firewall Management Center security hole is as bad as they get. There is no mitigation and no workaround. Patch immediately. So far, no confirmed active exploits have been confirmed. Get more in-depth ZDNET tech coverage: Add us as a preferred Google source on Chrome and Chromium browsers. Do you use Cisco's Secure Firewall Management Center (FMC) software? If your company operates a serious network usi

Topics: cisco firewall management security software
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SonicWall finds no SSLVPN zero-day, links ransomware attacks to 2024 flaw

bleepingcomputer.com Unknown 2025-11-28 08:27:43

SonicWall says that recent Akira ransomware attacks exploiting Gen 7 firewalls with SSLVPN enabled are exploiting an older vulnerability rather than a zero-day flaw. The company says that the attackers are targeting CVE-2024-40766, an unauthorized access flaw fixed in August 2024. "We now have high confidence that the recent SSLVPN activity is not connected to a zero-day vulnerability," reads the update on the SonicWall bulletin published this week. "Instead, there is a significant correlatio

Topics: 2024 cve firewalls gen sonicwall
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Yes, you need a firewall on Linux - here's why and which to use

zdnet.com Jack Wallen 2025-12-06 17:18:36

JuSun/Getty ZDNET's key takeaways Linux is highly secure, but you should still have a firewall. You should know if your ISP's hardware (gateway) uses a firewall. One of the easiest Linux firewalls is UFW and its GUI sidekick, GUFW. I've been using Linux for nearly 30 years. Over those years, I've experienced only one security issue (a rootkit on a server I inherited). The reason for that is Linux's heightened security. Out of the box, it includes a tight permissions system and security mech

Topics: firewall linux machine sudo ufw
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Microsoft fixes bug behind incorrect Windows Firewall errors

bleepingcomputer.com Unknown 2025-12-29 08:24:08

Microsoft has resolved a known issue that triggers invalid Windows Firewall errors after rebooting Windows 11 24H2 systems with the June 2025 preview update installed. The bug has been fixed in the KB5062660 preview cumulative update for Windows 11 24H2, released on Tuesday, with the fix to be made generally available to all users who will install the August Patch Tuesday updates. Redmond first acknowledged this bug on July 3rd, when Redmond asked admins to ignore incorrect warnings logged in

Topics: bug event firewall issue windows
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Microsoft mistakenly tags Windows Firewall error log bug as fixed

bleepingcomputer.com Unknown 2026-01-04 12:34:59

Microsoft has mistakenly tagged an ongoing Windows Firewall error message bug as fixed in recent updates, stating that they are still working on a resolution. Earlier this month, Microsoft warned that, starting with the June 2025 Windows 11 preview update, users would see Windows Firewall errors in the Event Viewer. These events would be labeled as event ID 2042 for the Windows Firewall With Advanced Security, and would be generated every time you restart Windows. "The error is found in Event

Topics: event firewall issue microsoft windows
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Microsoft asks users to ignore Windows Firewall config errors

bleepingcomputer.com Unknown 2026-02-05 08:02:03

Microsoft asked customers this week to disregard incorrect Windows Firewall errors that appear after rebooting their systems following the installation of the June 2025 preview update. These warnings are logged in the Event Viewer as 'Event 2042' for Windows Firewall with Advanced Security, with a 'Config Read Failed' warning and a 'More data is available' message. Microsoft added that this known issue is caused by a new feature that's still under development and hasn't yet been fully integrat

Topics: errors event firewall microsoft windows
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