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1answer
134 views

Steganography using all TCP/UDP ports?

I just had an idea, and usually when I come up with one, it turns out it was already invented, so... Is there some standard that would consist of multiple parties sniffing on all of their TCP/UDP ...
2
votes
1answer
446 views

How does knockd work?

It's rather easy to configure knockd for ex.: on an Ubuntu server's (10.04) sshd: ======================================================================== 0) # install knockd on the SERVER side ...
1
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3answers
369 views

Bibliography of attacks by port scanning techniques

I have to present a paper and make a presentation about the principal types of attacks by port scanning. What literature do you recommend to cover enough information about: types of attacks, port ...
5
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4answers
155 views

software to keep a list of IP that try to access ssh over a set of rules and feasibility

i'm interested in software or set of scripts to keep a lists of filtered IP that attempt to brute-force ssh, and to label an IP as brute-forcing i would add some checks like: one attempt to log as ...
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6answers
1k views

Port Knocking is it a good idea?

Normally for a server I like to lock down SSH and other non-public service to only be accessible by certain IP addresses. However this is not always practical if the business doesn’t have static IP ...