Weisse Betonstruktur
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Protect local MS Exchange servers against webshell attacks with reverse proxy or WAF

MS Exchange servers, which are located directly behind a NAT, are insufficiently protected against the exploitation of security vulnerabilities. A short appeal to admins and decision makers to use reverse proxies or web application firewalls (WAF).

Hybrid Cloud-LΓΆsung mit Microsoft 365 und Synology NAS
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Hybrid cloud solution with Microsoft 365 and Synology NAS

A relatively inexpensive Synology NAS can be extended with Microsoft 365 services to create a very comprehensive hybrid cloud solution for SMBs. A small How-To

SFOS 18.x on Sophos XG 105 / Sophos SG 105 appliances
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SFOS 18.x on Sophos XG 105 / Sophos SG 105 appliances

With the release of SFOS 18.0, Sophos has announced that SFOS 18.x won’t be provided for any revision of the Sophos XG 105, Sophos SG 105 as well as for the Sophos XG 85. Successors have been introduced for the Sophos XG appliances. (Sophos XG 106 & Sophos XG 86) If you compare the hardware…

Sophos SG210 mit installiertem Sophos XG Home
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Sophos XG Home on a Sophos appliance

Sophos offers the Sophos XG Home firewall free of charge for general home use or home labs. Sophos XG Home can either be run as a VM on a common hypervisor or installed on an Intel-based appliance. Basically, Sophos XG Home supports all Intel-based computers and appliances with at least 4GB RAM and 2 dedicated…

Network-Segmentation and mDNS (Bonjour & AirPrint)
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Network-Segmentation and mDNS (Bonjour & AirPrint)

Nowadays, all network administrators should know that flat network structures are particularly not a good idea. It is common practice to move multifunction devices and printers into seperate network segments and make them accessible to the user via the print server only. The problem is that AirPrint no longer works when printers are segmented into…