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

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3
votes
1answer
42 views

Restrict user from executing shell commands using PHP

Let's say that i have shared hosting and i want to secure that place, from executing shell commands. I'v installed suphp, so that users can execute PHP separately. I also did some other things in ...
1
vote
3answers
47 views

Securing online SQL database and server [closed]

I am trying to build a big project but lack the knowledge of security of servers and SQL. So, please help me by telling what necessary steps should i take. Block all remote access :- I have heard ...
-1
votes
2answers
58 views

need to hide server details using apache server whenever there is 404 or 403 error [closed]

I need need to hide server details using apache server whenever there is 404 or 403 error. I tried with the below two changes in httpd.conf file. ServerSignature Off ServerTokens Prod ...
0
votes
0answers
7 views

SQL server standard edition encryption [migrated]

I'm trying to look into what kind of encryption I can do with SQL server standard edition from 2008 forth, so far I know that I can't use TDE as that's part of EKM. When I look up this topic I'm ...
0
votes
0answers
26 views

Is there a way for someone to block an email from reaching its recipient?

I don't know if this can be done with people who can email spoof your contacts but I've been noticing that my emails just aren't getting to where it needs to go. In the same vein, I also don't get ...
1
vote
1answer
19 views

Usefulness of Server's Work Load given Timing Attack Resistance of Responses

I've read articles in the past discussing the importance of having timing attack resistant responses for information where knowing the time for evaluation would leak information about the data being ...
0
votes
0answers
23 views

Meeting HIPAA standards in a server-to-domain-client application?

Similar, inconclusive question by someone else found here: HIPAA requirements for local server The requirements are that the application runs on a Windows server and can be expected to connect to up ...
-4
votes
0answers
41 views

Alternatives to SMB

As you guys know, SMB is weak. It probably has lots of security holes. I was setting up the server yesterday and realized that whoever had access to my account information could come in and randomly ...
0
votes
1answer
125 views

Encrypting the System Infrastructure

The requirements are to Encrypt the data in our servers 'at rest' and the 'database' - in short the whole infrastructure. Threat Model - to protect a possible data-breach by an adversary (or from ...
41
votes
8answers
5k views

Is physical security less important with disks on a server being encrypted?

If you could get physical access to a server, you could change the root/admin password even if you did not know the current password. However with encrypted disks, I don't think this is possible ...
8
votes
1answer
65 views

Once established, are sockets on localhost secure?

Once a TCP socket has been established on localhost, and a connection made using accept, is it possible for a non-privileged user to intercept or modify bytes sent over this connection, or can this ...
4
votes
2answers
84 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 ...
0
votes
1answer
47 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
56 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?
1
vote
1answer
80 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
120 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 ...
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 ...
3
votes
1answer
44 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; ...
5
votes
1answer
93 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 ...
1
vote
1answer
55 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 ...
4
votes
1answer
117 views

Investigating a possible rogue DNS Server (maybe DNSChanger)

One of the users of our RouterCheck tool was complaining about random popups containing ads in Spanish and Russian. Upon investigation, we found that the DNS settings on his router were changed to ...
2
votes
1answer
92 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
2answers
90 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 ...
20
votes
3answers
2k 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 ...
2
votes
1answer
108 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
81 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
87 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.
2
votes
3answers
132 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 ...
7
votes
1answer
189 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
46 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
2answers
115 views

Mobile Phone Client -> Server Authentication based on device

I have a mobile application (Android, iOS) and a server, which handles requests from the application. It is easy to perform standard authentication using SSL, password and random token to ...
1
vote
2answers
74 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
votes
2answers
47 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 ...
-1
votes
1answer
61 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
82 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!"); ...
2
votes
2answers
84 views

Physical protection of your servers?

Here is a scenario. You are a small startup company that makes a video game. In your video game, you can exchange money for items. You are not dealing with the credit card/debit card directly but ...
-5
votes
1answer
98 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 ...
1
vote
1answer
68 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 ...
30
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 ...
1
vote
1answer
27 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 ...
0
votes
1answer
162 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 ...
2
votes
1answer
84 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, ...
3
votes
2answers
132 views

Authy: Does multi-device mode imply that all keys are stored on their servers?

My understanding is that if you use Authy, without backups/multi-device options, none of your account keys are stored on their servers. It all resides on your single device. Ie, even if Authy ...
1
vote
1answer
63 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 ...
0
votes
0answers
24 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 ...
3
votes
2answers
196 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 ...
-1
votes
2answers
245 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
378 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 ...
10
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 ...
-1
votes
3answers
53 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 ...