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

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How to find out the email host of a vanity email address?

Assuming a person gets his own domain address, say, theperson.com. He then goes on to create a vanity email address with that domain. e.g. me@theperson.com. me@theperson.com may be hosted by the ...
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3answers
207 views

How to regain access to the server?

I have a Debian server with KVM available 24/7. It was recently broken into and its root password changed. My hosting provider has restored my access and helped me change the password. But in the ...
2
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2answers
307 views

Web Service Security Checklist - Tracing and Debugging

I have been reading this security checklist about web service design: http://msdn.microsoft.com/en-us/library/ff648304.aspx One of the suggestions is that you should disable the following in ...
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4answers
154 views

Why should I log successful log-ins to my server?

I was arguing with a friend about logs in user logins. I think that logs means a big audit source for IT audit professionals. Why should I log successful log-ins to my server? It's so important log ...
2
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1answer
251 views

Security on dedicated lines

Is it safe for a company not to use any encryption on customer's data when it is transferred between data centers on dedicated lines? By customer data I don't mean passowrds/credit card info. Just ...
2
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1answer
284 views

Bastion host that allows jailed users to SSH but protects private key

Basically, I'm trying to let the user use a private key without having read access to it. Use case: Employee needs to SSH to a server in the data center. There is 1 private key for all servers, ...
2
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4answers
475 views

What's the best way to secure inter-server communication for cloud servers?

I'm looking for best-practices or suggestions to secure inter-server communications between VPSs. Should I just run all traffic through SSH? What about HTTP Traffic via something like mongo? ...
2
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2answers
219 views

Is this accidental incident considered hacking(illegal)? [closed]

I was doing research for a college research paper and I got bored and opened up CMD. I don't really know more than the next guy about computers, so i figured id just play around. I googled the ...
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2answers
512 views

SSL: How to send generated client certificate from server to avoid MITM?

The question I have is simply how do I prevent a MiTM attack on a certificate once the server side creates a new one and tries to send it to a client? Does the certificate get encrypted by rsa and ...
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2answers
84 views

Stop POODLE vulnerability in Oracle Application Server

Our Enterprise is using Oracle Application Server in front of Oracle database. We are using Oracle wallet manager(Installed with Oracle client 10) to create self-signed certificates. As you may know ...
2
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1answer
100 views

How to deal with misbehaving clients on an authoritative server?

My coworker and I are developing an authoritative server for an MMO. We can't agree on how to handle "misbehaving" clients. Misbehaving, in this case, means clients who send "odd" requests that might ...
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4answers
337 views

What are the arguments for and against having anti-virus on domain servers

I have been hired at a start-up where I seem to have become the de-facto admin despite being hired to do application support (to be fair I do have a background as an all-rounder). Amongst the ...
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1answer
47 views

“holding open” encrypted home with local ssh

I have a couple of machines that I use for purely automated stuff, with home directories encrypted using ecryptfs. So even if the machine is powered on, those directories aren't decrypted unless that ...
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4answers
484 views

I think my server is under attack, what can I do to stop it? [duplicate]

Possible Duplicate: Invalid users trying to log in to my server I have a small ssh server mostly used for file sharing. A couple of other people and I use it and there are only 3 users. ...
2
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1answer
77 views

Redeploying multiple Secure sites on a single server

This may not be a great site for this question. I basically have approximately 10 VPS instances running a secured website each, each with their own SSH connection to a hosted Database. What I'm ...
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1answer
200 views

OpenVPN: Storage location and creation of keys/certificates?

I am re-setting up some OpenVPN infrastructure to be more secure than the original and wanted some guidance. It's noted that the best security policy is to keep the Certificate Authority (CA) offline ...
2
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1answer
152 views

After having confirmed a computer is infected by a Botnet.

And having found a server IP that is controlling it. How can I find out the log-in credentials this client uses to log in to a IRC channel / server webpage / control panel. I have found out a python ...
2
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1answer
134 views

Forefront Identity Management Server Hardening

Is there a good document for hardening FIM? I've tried CIS and NIST, but I couldn't find anything. If there is no such document, what would I have to look out for in the configuration?
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2answers
5k views

How to set up a user-friendly NAS encryption?

We recently installed one NAS drive (Buffalo LinkStation Pro Duo, LS-WVL, running the most recent Firmware version 1.6 to be precise) in our (small) company network. Currently, there is no encryption ...
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3answers
141 views

Is it possible to upgrade the SSL version of a connection from the server's side only?

I am trying to find out if there's a way to upgrade the SSL version from SSLv3 to TLSv1 of a connection by only making server-side changes. In my case, both the client application and server are ...
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0answers
25 views

How do I start securing a virtual appliance to avoid manipulation? [closed]

We have created an amateur software product related with monitoring and management of specific services. It has been made in Python and runs a web service as frontend to show the data in a nice way ...
2
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0answers
67 views

Ubuntu server seems compromised for a DDOS attack [duplicate]

So 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 ...
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0answers
152 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 ...
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0answers
95 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 ...
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4answers
7k 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 ...
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1answer
94 views

Is nc -l unexploitable?

Suppose I want to set up a server as a test, and I want it exposed to the Internet, giving any IP access. It could be for any reason or no reason. I don't want it to be at risk of a buffer ...
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1answer
126 views

question on rooting

Rooting a server is done through uploading a shell on a target website and running a root exploit to gain root privileges on a server thus gaining access to sites that are hosted on that shared ...
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2answers
136 views

Using “Dynamic Hash Technique” to protect cookies from XSS?

This paper appears to describe a solution in which XSS attacks stealing cookies are made pointless by having the server send clients a cookie with a hashed name. Whenever the user sends the cookie ...
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1answer
153 views

Client vs Server security for business critical application (crossplatform)

We have the option to develop a software either based on Java (but then it is only available for desktop clients using Java SE and can run maybe also as tomcat app can be multithreaded, stable, ...
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2answers
275 views

best place to store backup encryption key [closed]

I have a server on which I keep an encrypted backup of some data. The server updates the backup once a day if the data has been changed and is physically accessible to many people. Further, I would ...
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1answer
298 views

Is it safe to use flex and bison as a protocol parser?

I started writing a a simple protocol lexer and parser for STOMP using flex and bison. Does anyone know of any security issues that might result from this? Edit: Added code. %{ /* Tokenizer for ...
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2answers
259 views

Good Practices to secure a Gaming Web Server, Memcached Server & MySQL Server

We have developed Game for Facebook platform. We have several Gaming Web Server, Memcached Server & MySQL Server. Here we have to work with facebook Payment API. We need to secure enough our ...
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2answers
74 views

Is a server absolutely safe if the attacker don't know unknown bug?

If a server installed all patches for known bugs and the attacker can't do a 0-day attack, then is the server absolutely safe?
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270 views

Is IP whitelist sufficient to protect a server? [closed]

I am currently using a server 1 managing incoming traffic from users and a server 2 managing database requests from server 2. Both servers are accesible via Internet. Would IP whitelisting be a ...
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2answers
455 views

Why should web applications use multiple gatekeepers?

I have been reading a security checklist for web application design which can be found on: http://msdn.microsoft.com/en-us/library/ff648647.aspx One of the recommendations is to "use multiple ...
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1answer
558 views

Is server-side cryptography with user-only access possible for email services?

I came across the Lavabit High Scalability Writeup and got curious. Do you use any particularly cool technologies or algorithms? The way we encrypt messages before storing them is relatively ...
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1answer
163 views

What is attacker trying to do with my server?

Some is trying to access this link (and similar ones) frequently in my site: http://example.com/upload/RS=%5EADAJVxZ5NB.GMTgFV3EMEJX3sN22Jw- Note that my server doesn't have an upload folder inside ...
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3answers
182 views

Multiple SSL server certificates

I am sort of new to SSL. During a SSL connection establishment, I see that the server is sending multiple certificates. Can someone help me to understand why the server is sending multiple ...
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3answers
104 views

Is forwarding a port(s) a security risk to all computers on the network or just one?

I know forwarding ports can add some security risk, but if I forward a port to a computer, say running linux, would it add a security risk to all computers on my network or just the one?
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2answers
273 views

What security does an ISP provide for its customers?

I've heard that ISPs provide some kind of protection; using NAT and firewalls, to prevent hackers from using tools such as nmap to attack customers from over the Internet. What other technologies are ...
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1answer
222 views

How to verify data from localStorage on a server

This is a cross-post from my Programmers.StackExchange post - I think this might be a better forum to ask this question. Admins - please delete either of them as you deem fit. On my mobile app, I am ...
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1answer
110 views

Is it dangerous to allow clients to run JavaScript on a Server

On a webpage I have been working on, we can archive certain webpages for a user. The user can give an address and this webpage is than visited on the server and archived. Lately, I noticed that ...
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2answers
117 views

Does where I put my PKI certificates matter?

I have an intermediate and a root PKI certificate that I see were already imported into a computers (windows server 2003) certificate store. However both the intermediate and root certificates were ...
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1answer
96 views

how to trace or get evidence you've been hacked [closed]

my devices and my network have been compromised. I foolishly left my router unprotected and they were able to gain access to all my apple devices and then install some sort of software that will take ...
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1answer
225 views

How does Java connect via SSL to a server without me providing any private/public key for the communication? [duplicate]

I am talking about server side auth only. Does Java create an internal self-signed cert for this communication? AFAIK from TLS protocol, we both need to create a shared secret, which is based on what ...
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1answer
65 views

Should statically-linked server binaries (daemons) be deemed more secure? [closed]

For a long time I've pondered this question. I am aware of the benefits and downsides of dynamic libraries (shared objects), including the infamous article by Drepper. All other things being equal, ...
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1answer
256 views

Certificate services will not start with “server is offline” error [closed]

I have a subordinate CA. The Enterprise root service was uninstalled from the network by accident and then migrated to a new box using the same key. This new server has a different server name. It ...
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1answer
142 views

how much of a security threat would this be?

If I set up a Domain Controller server to be accessible from the internet via Remote Desktop Connection (through port forwarding in the router), how much of a threat would that be? and if I have a ...
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2answers
59 views

Per-transfer authorization of file transfers on a per transaction basis

In my organization, users have the rights to transfer files to and from servers using SSH File Transfer protocol for a variety of reasons; e.g. application troubleshooting, BAU, etc. Although our ...
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1answer
440 views

Custom Python Server - how to secure it?

I'm going to purchase my own dedicated server service soon and run few python server scripts on it. Firstly, let me tell you that I am total noob when it comes to internet security and was unable to ...