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1
vote
That's what a firewall is for. In your case a packet filter based solution (linux with iptables or similar) is probably mostly enough but if you want to have a more granular access (i.e. only specific …
answered Jan 3 '16 by Steffen Ullrich
4
votes
Blocking a port is cheap: it can be done by a simple stateless firewall only inspecting up to OSI layer 4. It can also be done with the first packet already, i.e. even at the TCP handshake were no dat …
answered Sep 26 by Steffen Ullrich
0
votes
Is it possible to prevent attacks like attaching a hardware network device to the PC's straight by wire to immitate a fake gateway? That way user can avoid all office-wide network restrictions and …
answered Oct 6 '15 by Steffen Ullrich
2
votes
Disabling the functionality inside the user interface of the web application (i.e. inside the browser) can be done by using some kind of proxy, but it needs to be done on for each application. Still, …
answered Dec 31 '17 by Steffen Ullrich
0
votes
Firstly, why is cannot see application data being one of the disadvantages of Stateful Packet Filter? Application level analysis is important to filter out malware because you have to understand …
answered May 28 '16 by Steffen Ullrich
1
vote
Firstly, what does it mean "A proxy is something that acts on your behalf"? Can anyone give a more detail explanation about proxy? I read a number of papers but still bit confused The client conn …
answered May 28 '16 by Steffen Ullrich