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Rui F Ribeiro

Longtime net/Unix sysadmin, ISP background, Unix and network security consultant. *BSD fan. First ZX Spectrum emulator for Windows. FreeRadius / EDUROAM / DNS / DHCP / Anycast specialist. Specialized in Debian and cloud migration. Was an expat 6 years in Africa. Worked for Academia twice. Internacional corporate consultant for a couple of years. Worked for a couple of ISPs. Nowadays working for the local biggest ISP provider as Linux Cloud specialist.

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30 Am I experiencing a brute force attack? Jan 16 '16
23 Is it possible to secretly monitor/backdoor hardware? Jan 19 '16
17 What is the risk of copy and pasting Linux commands from a website? How can some commands be invisible? Feb 14 '16
15 Turn RPi3 Wi-Fi adapter into monitor mode using airmon-ng Apr 26 '16
7 Can an open Wi-Fi hotspot be considered “secure” when using a VPN connection? Feb 16 '16
7 Is public Wi-Fi a threat nowadays? Dec 5 '17
5 Another domain is using our web app's IP address. How to prevent it? Jan 3 '18
5 Is HTTPS able to prevent ARP poison attack in LAN? Jan 17 '16
4 Almost fell for “tech support” scam - what is the risk? May 16 '18
3 Can I trust DNS servers? Jun 6 '16
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