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

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3
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0answers
104 views

Distinct databases with the same Kerberos Authentication server

Should two deployed applications within a private network requiring distinct databases (for storing their own users credentials) require distinct Authentication servers (implementing Kerberos)? Or is ...
5
votes
2answers
121 views

Don’t use a web browser on a server?

After pulling up a Windows Server 2012 instance, I learned that google.com is riskier than I thought: It does the same for microsoft.com. There are instructions to disable "Enhanced Security ...
3
votes
1answer
45 views

Prevent snapshots of VPS

Pretend I have a server. Is there anyway to prevent (or make more difficult) the administrator from taking snapshots? Feel free to give me a software way, or suggest if I should change server types; ...
0
votes
1answer
74 views

Dealing with a malware infected server

I have a web server which is heavily infected by malware. That is, around 12 websites (Outdated CMS) are infected by PHP shells and XSS. My websites are banned and are not accessible anymore. I have ...
0
votes
1answer
70 views

Man in the middle attack on loopback

We made a client/server program that runs at localhost. Is it possible to execute a man in the middle attack on the loopback between the client and server?
5
votes
2answers
98 views

Secure Software: How to ensure caller is authentic?

For multiplayer (competitive) games, there is often the issue of needing to detect illegitimate players so they can be denied service. On the other hand, legitimate players should of course be ...
1
vote
1answer
93 views

What Are Good Code Signing Environment Guidelines? [closed]

Take this scenario as an example: An organization has a few build servers that periodically check out source from a repository and builds everything. When a build finishes the binaries are code signed ...
-1
votes
1answer
132 views

Is it okay to have a blank root password for MySQL if port 3306 is not forwarded?

I'm running a PHP server that will use the root account to access the database. However, the server is behind a router and port 3306 is not port forwarded. Is it okay to have a blank password for the ...
2
votes
1answer
119 views

Proxied server requests + forwarding authentication info in a secure fashion

We are using PassportJS with a couple of Node.js servers - Passport is just a library that is popular for Node.js server authentication - but we have some questions about how to use Passport with ...
5
votes
1answer
119 views

Browsers and HTTP Public Key Pinning

The strength of HTTP Public Key Pinning (HPKP) is that the browsers are saving the keys from the HTTP header and can check in the future if the certificate from the website is valid. I have two ...
4
votes
1answer
59 views

How do I protect the stored clients' public keys on a server?

I'm learning about security at the moment, and I want to store my clients' public keys on the server to facilitate distributing and managing those keys, my question is what are the possible ways to ...
1
vote
1answer
61 views

How to prevent a hacker from accessing other user's web dir

My website got hacked today :) The hacker accessed a website hosted by another user on the same server, then he got access to my /home/website-dir/ ! it's my server and I use it to host some websites ...
-1
votes
2answers
53 views

Secure protocol for a backup server? [closed]

I want to make a back up system in my home, but I don't know I should use a FTP server or a TPC-based cloud server or a SSH-based server. Which method is best in security? I just want to upload and ...
21
votes
3answers
3k views

Could a VPS provider have access to the content of their users?

Could a VPS provider like DigitalOcean have access to the content of their users? In their terms of service they do not mention anything related to this question, but could they theoretically have ...
1
vote
1answer
152 views

Client/server communication keystore and tls

I want to establish a client-server communication using TLS protocol. The point is I dont understand a few things since I don't know many oner security. I have created certificates for my server and a ...
2
votes
1answer
91 views

How do hackers get into servers? [closed]

I am a web developer. I've checked How does hacking work? and I know all of the things described in the most upvoted post. However, I can't understand how do hackers get into servers when the website ...
0
votes
2answers
116 views

TLS or IPsec protocol for client-server communication? [duplicate]

What is the best protocol for client-server communication? TLS or IPsec? I have a public channel where users communicate with each other using a digital certificate like X.509.
1
vote
3answers
145 views

Has my server been compromised? [duplicate]

--thanks everyone this has been resolved, see my answer below-- I created an Debian/OpenVPN server several months ago for private use but in the last two days I've noticed something extremely ...
3
votes
2answers
1k views

How does a firewall help to protect a server?

Since a potential attacker will exploit the services that are already open to public by firewall rules, how will a firewall help to protect my server from attackers?
7
votes
1answer
209 views

“Fix” man in the middle

I've just tried to ssh connect to a server (auth via ssh key), and get the well-known message WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!. I'm the server administrator (but I'm not really a good ...
1
vote
0answers
47 views

How to keep home hosted webserver safe [closed]

I've got a raspberry pi I used as a web server. It's not for any sort of commercial traffic I just have it as a machine on my network so I can SSH/FTP in. I recently setup a page linked to a domain ...
1
vote
1answer
118 views

Preventing outgoing Portscan/SYN/UDP Floods in the datacenter

We are a VPS hosting company that have servers housed in a datacenter in Germany. Currently we are receiving multiple take-down requests because customers are ports scanning or attacking servers ...
2
votes
1answer
341 views

Remote Administrative Access to a server, KVM over IP or HP iLo?

We have a situation. We want to grant remote administrative access to one of our servers for clients. As I know, there are two possible ways: 1- KVM-over-IP and 2-HP iLO. The most important thing for ...
1
vote
4answers
14k views

How is HTTP PUT and DELETE methods insecure, if they really are? [duplicate]

If I really need to use these methods, how do i make sure they are secure? Edit: Is there a link or source where I can see how to make sure that 'PUT' and 'DELETE' methods are not able to delete or ...
1
vote
1answer
723 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 ...
2
votes
2answers
99 views

Is using a sqlite with random name file secure?

As you know, SQLite have no security mechanism. My question is if i change the database file into some random name like '22OYIz23tmpyesTcMVFmw1tquFxzCIQD.sqlite' can someone exploit my database and ...
1
vote
1answer
236 views

MITM Attacks with Web GUI

I'm thinking of writing an application that communicates sensitive information (using Python, if that's relevant). Instead of using the standard GUI libraries (like GTK, Qt or wxWidgets), I was ...
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votes
1answer
69 views

Server is Sending Spam

I have determined that my server is compromised because it is sending spam (from one of my legitimate addresses). How can I determine what's compromised? Does the attacker know my SSH password? ...
2
votes
1answer
127 views

Can clients visit my site, and spam socket.emit(something); to my server, or is there some security behind socket.io?

I'm using Socket.IO and the client side looks like this. <script src="/socket.io/socket.io.js"></script> <script> var socket = io(); socket.emit("sendData", "hello!"); ...
20
votes
4answers
19k views

Possible to use both private key and password authentication for ssh login?

It seems that they are mutually exclusive, as disabling one gives me the other, and vice versa. Two-factor auth for my ssh servers sounds really nice, so is there any way to accomplish this?
-4
votes
1answer
135 views

Security Setting up personal web server [closed]

I'm sure something like this has been asked many many times over the Internet. I'm asking again because I need situation-specific response. I've already set up a home web server. My setup is like ...
31
votes
13answers
8k views

Is a server infrastructure fundamentally possible which the smartest person can't breach?

TL;DR: Perhaps I've gone overboard with my question's detail, but I wanted to be sure the question was clear since the topic seems very broad. But here it is. The word "smartest" is meant ...
0
votes
3answers
4k 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 ...
1
vote
1answer
33 views

Is it secure to have an iPad app run a webDAV server on localhost without authentication?

I have two iPad apps running on the same device. One is hosting a webDAV server on http://localhost:8080 without any authentication (the server is active whilst the app is foregrounded, and for a few ...
2
votes
1answer
86 views

Communicate through gpg

I need to frequently communicate with a server in the manner do stuff related to x or send me info of x My thoughts are to directly put the task I want to be executed into the package I want to send, ...
0
votes
1answer
415 views

Command & Control Server List [duplicate]

I recently got an email from my ISP saying that they'd detected traffic to a known Command & Control server from my home. Boo. I'm sure this probably means one of our computers has some awful ...
1
vote
1answer
74 views

Authentication on client server

I have following requirements for system: My admins authenticate on client servers Over http Central authorization server My solution is based on O-Auth: user is redirected to authentication ...
4
votes
1answer
310 views

Does using NAT-T for L2TP / IPsec VPN pose a realistic security risk?

I'm working on upgrading an old Windows RAS server that hosts PPTP VPN. I want to move to a L2TP/IPsec VPN. Due to the firewall appliance we use, the VPN server has to be behind a NAT. This means ...
1
vote
0answers
74 views

Ubuntu server seems compromised for a DDOS attack [duplicate]

I have this VPS Ubuntu v12.04 Server running with DigitalOcean. Zpanel/Apache/PHP stack was installed on the Server. For the past few days it was occasionally down. Initially, I didn't know what ...
2
votes
2answers
214 views

How secure is loging into internet banking via an https library?

My bank does not have an API so I want my server to log in and check incoming payments to notify me if a client has paid or not. I would like the server to log in and scrape using Beautifulsoup and ...
0
votes
0answers
26 views

Is there any risk in allowing clients to be fed opengl shaders?

I'm working on a project that may eventually involve server specified fragment and vertex shaders. What are the possible risks of allowing a third party to send fragment/vertex shaders and execute ...
-2
votes
2answers
272 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 ...
6
votes
5answers
407 views

Does setting a default DROP policy actually improve security?

It seems that the status quo at the moment is to configure firewalls to drop any packets that aren't destined for specifically-opened ports. Many defensive port scanners (such as ShieldsUP!) seem to ...
11
votes
1answer
1k views

Git server security

I want to install a Git server for my company. I'm able to get a Windows virtual machine. Now I've been asked to assess its security aspects. I'm lost on how to achieve this goal. As it is a Windows ...
0
votes
3answers
57 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 ...
1
vote
2answers
113 views

Verifying Client with Server

I'm currently designing a basic Java program that uses sockets to communicate from a server to multiple clients. I want the clients to be unmodified, however, to prevent against users trying to use ...
1
vote
1answer
77 views

How to make sure my HTTP server on Win 7 is secure? [closed]

I'm hosting a HTTP server from home. I'm concerned about security issues since the machine has some personal files in it. I have forwarded data from external IP port 80 to my IP at port 80. The ...
0
votes
0answers
46 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 ...
1
vote
1answer
95 views

Store/retrieve users passwords on server (using password managers ?) [closed]

I am working on a project in wich a school's server will need to use students' passwords periodically to connect to another website for them. I am aware that storing users' passwords in a server ...
5
votes
1answer
91 views

Mail client: Public key pinning

I'm running my own mail server setup: - IMAP: Dovecot - SMTP: Postfix There are 4 clients which retrieve emails via IMAP: - iOS (Default client: Apple Mail) - Android (Default client) - Mac (Default ...