A server is a machine running a software daemon that is generally accessed over a network by other machines.

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unfamiliar IP when logging into ssh server

I just noticed something today, and Now I am curious... I was on my shell server, an i was wondering who was on, so I gave the command $w and saw this: j0h@server:~$ w 22:06:02 up 18 days, 7:02, ...
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281 views

Subdomain-only SSL security/availability

CAcert and StartSSL both only validate domains whose TLD is owned by the requester. I have a few subdomains that come from places like freeDNS that I would like to run an SSL-secured server on. Are ...
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77 views

Restricting locations for unzipping a zip file

I hope that I have found the correct place to ask my question regarding unzipping files. I would like to see if there is a way to restrict the locations available to the user to unzip a password ...
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3answers
79 views

Is it possible for an attacker to redirect a packet sent by a client, modify it then sent to original server

Theoretical question: Is it possible, or will it ever be possible, for an attacker to sniff/intercept it and redirect a packet, sent from a client through wireless, modify it and then sent to the ...
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94 views

Why is Parallels Plesk running on port 8443 > 1023?

Parallels Plesk, a server administration software package, uses HTTP(S) on port 8443 (ref). I know that ports <1024 are only available for root. This means that if the server Plesk is using for ...
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55 views

The security of dll files in a Client/Server application in .net [closed]

I'm going to write a Client/Server application. There are some ambiguous concepts in this that I was not able to get answer to after many hours of searching. As we all know one of the major caveats ...
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361 views

Recent “attack” to my server that might be using shellshock exploit

I just notice this repeated entry in nginx log: 31.184.194.114 - - [04/Mar/2015:10:29:53 +0700] "GET /cgi-bin/up.cgi HTTP/1.1" 301 178 "-" "() { :;};/usr/bin/perl -e 'print \x22Content-Type: ...
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84 views

SSH stealing files from client?

Is it technically possible for a ssh server to steal files from a connected client?.
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1k views

internal proxy server vs DMZ proxy server

What would be reason for placing a proxy server in a Demilitarized Zone (DMZ)? I understand that a DMZ is a separate network to your internal network (lies inbetween internal network and firewall). I ...
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95 views

Create https session between server and client

I'm doing a project about security transactions and i'm wondering if to establish a connection based on https both client and server need to have a ssl implementation installed to preform the ...
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3k views

Should I restrict Core Networking firewall rules in Windows server?

I have a server that I want to restrict access to by allowing only one IP address to be able to connect to it through desktop and make http request through port 80. Now in my firewall I only have ...
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91 views

What are the risks of uploading and downloading data in binary (non-encoded) format to servers and browsers?

I admit up-front that this question may be the result of unfounded paranoia. But I am concerned that uploading and downloading data in binary form opens the door to exploits that might not be ...
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248 views

Working from many places <-> being able to restrict SSH access to server to IP range

I administer a webserver, and while I'd like to restrict the SSH access to an IP range, I wouldn't be able to do so because a) I travel a lot and b) I don't have a static IP at my homeoffice. I've ...
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3answers
216 views

Implement server serial key for server software

Me and my friend want to sell game server-side software, but we want some sort of control, over use of that software. For example, we want some sort of serial key system, so only verified/paid ...
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0answers
36 views

Is there a pre-established method for cracking RSA SecureID codes?

I am using the most modern version of RSA SecureID's tokens with a RSA server (used with a lot of governments and larger organizations ). I was just wondering if there was a pre-established method for ...
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35 views

Virtually isolate a server test environment [migrated]

What is the minimum implementation that ensures some test servers (like domain controllers) don't send out network traffic that crosses over with production systems? The purpose would be to setup a ...
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209 views

Prevent CryptoLocker on Server

A quick question, which may have a not-so-quick answer - Are there any ways to prevent files associated with CryptoLocker, to be propagated to a data server, by means of a back up? We use Cobian as ...
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21 views

How can it be possible to have encrypted communication between a server and a client if the server has only a public key [duplicate]

If only the server has an electronic certificate (User ID, Version, Public key), how can be possible the encrypted communication between the client and the server?
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93 views

Transmission of messages

I am currently developing a game which will be run in a client, they will sign up for this game online and create their account there, their information will be stored into a MySQL database. I am ...
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2answers
170 views

Don't store passwords in database? [closed]

Where might someone keep them besides a database? By storing passwords elsewhere I mean a non-traditional database. Allow me to explain. A couple of my friends run high security websites. They ...
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2answers
65 views

Server Files Got Exposed, What Security Steps Should I Take? [duplicate]

so I made a script that would accept a GET request through a script on my page download the url in the GET and then echo the response. Sort of like an in browser proxy. Basically someone found out ...
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1answer
82 views

Emulating Client by sending encrypted hexdump to dB server and getting response back [closed]

So I used wireshark to retrieve a hexdump that has been encrypted with RSA. I need to figure out what the response to that would be when it comes back from the server. How I imagine it would work ...
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1answer
54 views

Where do I start securing my system? [closed]

I am working for a company with perhaps the least security possible. We have servers, databases, web applications, and websites that are all unsecured. There only exists one account: root, which ...
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3answers
50 views

Which attacks can a malicious hosting company execute? [closed]

Which attacks can a rogue hosting company carry against the servers it hosts? Assume that the rogue hosting company also provides full access to law enforcement. I was just wondering about that. So ...
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1answer
55 views

Known Windows vulnerabilities vs actual exploits on Microsoft's websites?

Although some of Microsoft's servers are running on Linux, at least half is running Windows Server of some kind. I'm trying to understand how with so many unpatched and unresolved vulnerabilities in ...
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1answer
100 views

Server security experiment? [closed]

Okay, so I am in a university class where we are using a server. Each student in the class has access to the server. We all share it. I can see their files and open them, and they likewise can see ...
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1answer
80 views

Configuration for a server [closed]

I would like to configure a server and need guidance in assembling a server. I do not wish to spend much but at the same time I do not wish to compromise on performance. The purpose for my server ...
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1answer
92 views

Exchange of encrypted files through a server

I have a thing to do, that basically bases on a server that is honest but curious. Therefore I want the server to have the public key for encryption and it will encrypt files during the process of ...
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1answer
23 views

Usage of Domain from one server to another [closed]

Just want to ask if anyone have an idea about how to do this. I'm using a domain lets call it mymaindomain.com to connect to my Main Server, now I have a second Server that uses mysecondomain.com Is ...
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1answer
67 views

Should I do science of computing or systems analyst? [closed]

I want to become a federal analyst of cyber crimes and I dont't know what's the right university course for me, I would like to know what's the cons and pros of choosing one or another course and ...
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1answer
433 views

Spoofed DDoS mitigation / DNS amplification mitigation [duplicate]

Recently my server has been attacked multiple times, after looking at my firewall I've come to the conclusion that the IP's are spoofed. (10,000+ IP's connect at once) I'm running Win server 2012 x64 ...
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1answer
175 views

Hacker problems - They stole my backups [closed]

I am facing an issue where hackers are seeking to compromise two of my servers. They succeeded in wiping out both and stealing my backups. I had off-site backups and I am back online. Nonetheless, I ...