Network Security - securing network infrastructure and connections

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Dual Firewall DMZ

We've just learnt about firewalls and DMZ and I'm struggling to understand how are these actually implemented ? The architecture we've learned was something like this: Let's say that we have a ...
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3answers
726 views

Why there are uninvited incoming packets to my ADSL connection?

To verify this, I boot my PC from Kali Linux live distro. Before establishing ADSL/PPP connection, I start Wireshark and listen on any pseudo device. Then I create the connection to ISP network. ...
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397 views

Is using a local DNS cache server more secure than using a DNS server from a router?

Is using a local DNS cache server imore secure than using a DNS server from a router?
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History (logs) of connected devices to my internet router (WIFI) [duplicate]

Simply, how can i know who has connected to my network WIFI? without using tools that run on PCs to monitor the traffic. Is there is a way?