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

learn more… | top users | synonyms

1
vote
3answers
52 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?
1
vote
1answer
68 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 ...
7
votes
1answer
2k views

Check logs for Heartbleed exploit use?

According to articles such as the following, it's apparently possible to check logs for heartbeat requests matching the payloads described in the Heartbleed exploit. Is this something that any server ...
1
vote
1answer
39 views

How do I store a user's secret key on a server?

I'm learning about security at the moment and one thing I'd like to try out is having a key server distribute keys to clients that will allow them to securely save and read data locally. My basic ...
1
vote
0answers
38 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
1answer
71 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 ...
1
vote
2answers
88 views

Hardware-restricted root login

I was thinking about how security on my Linux server can be increased and came up with this question: If most intrusions are performed by gaining remote access to machines, would it be possible and ...
0
votes
2answers
78 views

How do I prove for my client that unused ports are closed and unused services are disabled?

I have seen advice that I need to close all unused ports, and disable any unused services in order to secure my servers. How can I prove, beyond any doubt, to my client that I have done this? I need ...
1
vote
0answers
44 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 ...
1
vote
2answers
62 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 ...
8
votes
1answer
118 views

What is the difference between HSM and Key server?

As per PCI-DSS requirements, we have to use either HSM (Hardware Security Module), or Key Server to store the KEK (Key Encryption Key). If I'm storing encrypted DEK (Data Encryption Key) in an App ...
0
votes
2answers
113 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 ...
4
votes
3answers
51 views

Will sabotaging a shared web hosting account threaten the security of sibling accounts being that they are shared on the same server?

Will sabotaging a shared web hosting account threaten the security of sibling accounts being that they are shared on the same server? Whether it it be through htaccess setups, posting login ...
2
votes
2answers
71 views

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 ...
2
votes
4answers
114 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 ...
0
votes
0answers
17 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?
2
votes
4answers
112 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? ...
1
vote
2answers
205 views

Are there any logic-bombs that execute when the file is deleted?

I want to delete a suspected malicious file from a server. For the purposes of this question assume that the infected machine is Windows Server 2003 or later. Is there any risk in deleting such a ...
0
votes
2answers
62 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 ...
1
vote
1answer
117 views

How should IPSec be configured to provide a protection at least as good as my current Stunnel configuration?

In private network (as in using a private IP address space) at a cloud provider, other customers have access to the same private network. I have secured the communication between many hosts and ...
0
votes
2answers
50 views

What influences the speed of rendered php page using encryption [closed]

I've built a web app which uses the openssl_private_decrypt() functions. The rendering of a page with 15 messages encrypted with these functions takes remarkely longer as the ones without. (3-4 ...
1
vote
1answer
107 views

Is a seperate server needed for remotely accesing accounting software?

Wishing you all a great 2014. I hope this is the right section. Basically we have a Dell Poweredge R520 server in our office, and we now want to install some accounting software that can be accessed ...
2
votes
1answer
123 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
votes
1answer
40 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 ...
0
votes
2answers
80 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 ...
1
vote
2answers
91 views

Renting a remote server with IPMI: is one vulnerable?

It has been reported in the media and some security conscious mailing lists that some IPMI-enabled servers, implementations and brands suffer serious security issues. When you go to a dedicated ...
-1
votes
1answer
67 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 ...
0
votes
2answers
62 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 ...
1
vote
1answer
162 views

Does Ubuntu Server have a “phone home” feature?

I've heard that Ubuntu has some sort of "phone home" system that is enabled by default. The kind of stuff that passes along performance information and that type of things to Canonical. I don't know ...
0
votes
1answer
87 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 ...
-2
votes
1answer
60 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 ...
2
votes
2answers
225 views

Disable local/KVM access on a Linux VPS (allow only SSH)

Friends of mine have previously had issues with VPS security. The security was no fault of the operating system/services themselves, but mainly due to the "Control Panel" that gets forced upon you ...
1
vote
1answer
107 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 ...
2
votes
3answers
641 views

Cryptolocker: can servers be protected?

I'm IT in a small company. The network is about as ancient as most of the staff (at 30, I'm the company's youngest), and the staff also is notorious for spreading viruses around the network despite ...
2
votes
2answers
183 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 ...
1
vote
2answers
160 views

Main requirements to secure my Application in any database related features

I have an application which is hosted on a windows server on which an SQL DB exists. This server communicates with the clients and agents installed on host PCs through TCP/IP and SSL connections. I'm ...
2
votes
2answers
210 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 ...
1
vote
2answers
412 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 ...
1
vote
4answers
82 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 ...
1
vote
1answer
116 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 ...
6
votes
3answers
484 views

Are duplicate SSH server host keys a problem?

I'm doing an assessment of a small network that is using a good bit of virtualization. They have cloned some of their linux machines after generating their SSH server host keys. So the servers all ...
0
votes
1answer
76 views

Is there any reason to allow Python fetches of my Web server's pages?

I keep seeing "python-requests/1.1.0 CPython/2.7.4 Linux/3.8.0-19-generic" requests e.g. from Amazon's servers of my website. It's kind of creepy. Who would set up an Amazon server to scan websites? ...
2
votes
1answer
511 views

What are the pros and cons of using fail2ban when using SSH key auth? [closed]

I've just bought a new dedicated server. Should I install fail2ban if I am only using SSH keys to login? What else does fail2ban protect? What are the advantages and disadvantages of fail2ban? Is ...
1
vote
1answer
409 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 ...
0
votes
1answer
74 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 ...
4
votes
2answers
376 views

Preparing for a stolen physical server

What would be the best ways to protect sensitive data stored on a server/drive that gets stolen? The confidentiality of the data is what is important, not retrieving it. Obviously, physical means are ...
0
votes
2answers
179 views

best place to store backup encryption key [closed]

I have a server on witch I keep an encrypted backup of some data. The server updates the backup once a day if the data has been changed. Where would be the best place to store the encryption key ...
2
votes
4answers
140 views

Protecting IP on a remote server

Apologies in advance if this question is a bit vague. I just joined a stock trading group. A guy set up a server for me, and it's racked in their building. I ssh into it, and run my algo remotely ...
5
votes
1answer
1k views

What are the privacy pros and cons of using a public DNS server vs. your own?

Whether I'm using a normal internet connection setup, or tunnelling it through an anonymizing VPN or through TOR, what information of mine is revealed to whatever DNS server that I choose (e.g. Google ...
3
votes
3answers
1k views

Disabling SSL v2 and weak ciphers on client PC's

Is it a requirement to also disable SSL v2 and weak ciphers on client PC's? I have seen quite a few posts for disabling them on servers, but nothing about a regular client PC, say, running Windows XP ...