Tag Archives: Network

Windows Server: PPTP and L2TP VPN protocols declared deprecated

Posted on 2024-10-27 by guenni

[German]I'm catching up on a brief piece of information that I've already had for a few days. Microsoft has already announced on October 8, 2024 that it will no longer support the two protocols PPTP and L2TP VPN in future … Continue reading →

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Windows TCP/IP implementation: Reset can increase network performance

Posted on 2024-09-13 by guenni

[German]Another addendum to the topic "Microsoft's TCP/IP implementation in Windows and the pitfalls". In the TCP implementation of Windows 10 and Windows 11, Microsoft has built in some pitfalls that severely limit the possible performance of TCP/IP connections. There may … Continue reading →

Posted in Windows | Tagged , | 2 Comments

Windows 11/Server 2024 SMB Security-Hardening

Posted on 2024-09-05 by guenni

[German]In anticipation of the upcoming releases of Windows 11 24H2 and Windows Server 2025 at the end of August 2024, Microsoft has published a tech community article on the topic of "SMB Security Hardening". The whole thing is part of … Continue reading →

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Blast RADIUS attack enables RADIUS authentication to be bypassed

Posted on 2024-07-10 by guenni

[German]A vulnerability (CVE-2024-3596) discovered by security researchers makes it possible to log into a network using the RADIUS network authentication protocol without further authentication. The vulnerability, called Blast-RADIUS, could jeopardize network security in companies because RADIUS network authentication can be … Continue reading →

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Windows 11 network traffic generates twice as much CPU load as Windows 10

Posted on 2023-06-28 by guenni

[German]Within the blog post Windows 11: Optimize network transfer performance and CPU load – part 2 I mentioned, the the exploit protection implemented in Windows 11 may causes a hight CPU load. But there is more,  also Windows 11 Phishing … Continue reading →

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...

Windows 11: Optimize network transfer performance and CPU load – part 2

Posted on 2023-06-27 by guenni

[German]Windows 11 has a problem with network throughput when receiving files. In part 1, I had presented some measurements that a blog reader had taken during tests to analyze the weakening network throughput and the high CPU load under Windows … Continue reading →

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Windows 10/11: Poor network transfer performance, high Windows 11 CPU load – Part 1

Posted on 2023-06-26 by guenni

[German]When transferring data over a network, Windows has an amazing but unattractive effect. If you copy data between machines with Windows 10 and Windows 11, Windows 11 consumes 2 to 3 times more CPU power than Windows 10. In addition, … Continue reading →

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Windows: SMB Signing required soon (now available in Windows 11 Insider Preview)

Posted on 2023-06-03 by guenni

[German]Microsoft will require the so-called SMB signing (through security signatures) in Windows 11 and later also in Windows 10. This is supposed to protect systems in enterprise environments against NTLM relay attacks. The feature in question is being rolled out … Continue reading →

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Microsoft's TCP mess, how to optimize in Windows 10/11

Posted on 2023-02-14 by guenni

[German]Microsoft has made a few mistakes in the TCP implementation of Windows 10 and Windows 11 that severely limit the possible performance of TCP/IP connections. A blog reader brought this to my attention and immediately pointed out ways to possibly … Continue reading →

Posted in issue, Windows | Tagged , , | 7 Comments

Windows 11 22H2: Network printers communitcate now via RPC over TCP by default

Posted on 2022-11-01 by guenni

[German]Note to administrators in corporate environments who manage Windows 11 clients and are upgrading to version 22H2. There is a change in the connection of network printers, the connections are now done with RPC over TCP, as Microsoft has disclosed … Continue reading →

Posted in Windows | Tagged , , | 1 Comment