1. In computers and computer networks, a configuration often refers to the specific hardware and software details in terms of devices attached, capacity or capability, and exactly what the system is made up of. 2. In networks, a configuration often means the network topology. 3. In installing ...

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3answers
81 views

Difference between hardening guides (CIS, NSA, DISA)

I'm researching OS hardening and it seems there are a variety of recommended configuration guides. I realize the different configuration providers supply different offerings per Operating System, but ...
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2answers
45 views

Tools to check the firewall Configurations as per PCI standards [closed]

How do you audit the Firewall rules and configuration policies as per PCI standard. What are the tools used for it.
0
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1answer
49 views

Shall I set “RSAAuthentication yes” in sshd_config if I use only ECDSA key?

In a context of proprietary client boxes and servers, I want to limit authentication to ECDSA keys. Historically, "RSAAuthentication yes" was used to enable authentication with RSA and maybe DSA keys. ...
3
votes
1answer
90 views

Does encrypting a setting in web.config actually provide security?

Does encrypting a value in the web.config file actually provide any real protection? It seems to me that any web app can read that setting. Yes that's more work than just reading the web.config file, ...
0
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1answer
27 views

Directory Listing on WordPress

If a WorPress application that uses the Akismet wordpress plugin has certain directory listing exposed publicly, like, akismet-en_AU.po and the other .po files, and directories like plugins, themes, ...
2
votes
2answers
58 views

Disable all SSH security mechanisms for a private subnet

So I'm running a private subnet where there is no internet connectivity, I understand the grave danger of running an ssh server on the internet without security. In short I would like to be able to ...
0
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0answers
48 views

What is the security of Powershell “TrustedHosts”? (is it just a name match)?

Powershell has a TrustedHost section that is configured like this: winrm s winrm/config/client '@{TrustedHosts="CorpServer56"}' What security is implied for CorpServer56? Is it just an ASCII name ...
7
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3answers
226 views

What is a good source for hardened base configurations

I attended B-Sides in Orlando FL where one of the speakers had mentioned a site which contains hardened configs for popular services such as apache and postfix. The author of these configs is ...
0
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1answer
179 views

Defend against Blind ROP

At IEEE Security & Privacy, the blind return-oriented programming attack (blind ROP) was just introduced. In some sense, this is just another variation on ROP attacks -- but the blind ROP attack ...
1
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2answers
185 views

Assigning cPanel MySQL Privileges

When I log into cPanel, I go to create a new MySQL Database with the wizard. Usually, it is recommended to assign the database user with all of the permissions from Insert, Update, Alter, Execute, ...
0
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1answer
1k views

Use SSH config file with Putty [closed]

I'm using SourceTree (a Git GUI) which uses PuTTY as SSH client. I need to push some code into a repository for which I need to tunnel through SSH to do so. The trouble is, the repository and SSH ...
1
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0answers
79 views

How does Travis CI protect itself against being used for attacks?

Travis CI allows anyone to run any code on their servers by checking it into GitHub. How do they ensure that someone isn't taking advantage of their servers to launch an attack or other malicious ...
3
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2answers
2k views

How do I securely separate a wireless subnet from the wired network?

My setup looks like this: In the interest of security, I'd like to separate the wired network (where the Workstation is plugged in) from the wireless subnet. I don't trust some of the devices in ...
2
votes
1answer
290 views

OSSEC on an existing running machine

I am setting up a OSSEC on existing running machine. From my research I find that I should be running the following command to check for previous intrusion. zcat /var/log/*.gz | ...
0
votes
0answers
69 views

Protecting computers from quick physical access attacks [duplicate]

What steps need to be taken to protect a computer from quick attacks that involve physical access? (Note unlike this question, I'm primarily interested in stopping the attacks, not detecting them; ...
1
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2answers
226 views

How should I store and maintain secure configuration documents?

We have many scripts that we call "secure baselines" that allow our server/desktop installation people to install operating systems using best security practice. We test that the baselines have been ...
1
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3answers
176 views

USGCB on a non-networked computer

We will be getting some data that needs to be kept in accordance with USGCB regulations. Our intent was to keep it secure by storing and using it on a non-networked computer, but the regulations seem ...
2
votes
2answers
357 views

Are Yubi Keys secure “out of the box” when purchased for use with Yubi Cloud?

The YubiKey personalization tool allows someone to configure a YubiKey for HOTP, challenge response, and a variety of other authentication formats. YubiKey offers a number of personalization tools ...
8
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1answer
2k views

How to audit web servers for resistance/vulnerability to BREACH

BREACH, a new attack on SSL that targets HTTP compression, has recently been publicly announced. I manage a few web servers. How can I audit them to check which of them are potentially vulnerable to ...
14
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1answer
18k views

Secure Configuration of Ciphers/MACs/Kex available in SSH

Following on the heels of the previously posted question here, Taxonomy of Ciphers/MACs/Kex available in SSH?, I need some help to obtain the following design goals: Disable any 96-bit HMAC ...
2
votes
3answers
2k views

Uploading files through an HTTPS web application

We have a client facing web site. A certificate is required to land on the login page, where upon you then need a username and a password to further login. System has Apache servers acting as load ...
5
votes
2answers
227 views

Configuring election website to prevent MITM attacks

Consider an election web site that will be used for voting over the Internet. What steps should the administrator of such a web site take to provide adequate security against man-in-the-middle attacks ...
2
votes
3answers
434 views

rancid like tool for config files

I need to be able to watch directories on our servers, and track changes to files as part of our audit compliance. I have adjusted auditd to watch the directories, and send all writes and attribute ...
3
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1answer
91 views

Server Certification Processes

We are considering a certification process for new internal server builds before they are allowed to be placed into production. That is, the system administration team will send the server up to the ...
4
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2answers
4k views

Disabling authentication via DSA keys in OpenSSH?

How can I disable DSA and ECDSA authentication on my server with OpenSSH 5.9? Sifting through the documentation material and doing a web search didn't yield any results - only an old bug report for ...
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1answer
76 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 ...
3
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1answer
336 views

Security of Openflow/SDN network

Openflow/SDN networks give a remote controller the ability to manage the behavior of network devices i.e. configurations. They can forward instruction sets to dynamically change network configuration. ...
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2answers
265 views

What technologies are recommended for E-banking? [closed]

If a Linux user need use his bank account from Internet, then what technologies and procedures should use? Is better to use the Guest Account (if exist) of the OS, or an Administrator Account? What ...
7
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2answers
3k views

Security Concerns with TCP Forwarding

Until now I've been setting TCP Forwarding in ssh always blindly to no but searching on the net, I have trouble finding out what the actual security threat is, when allowing it. The one thing I did ...
2
votes
2answers
1k views

DMZ and LAN data exchange - what direction should connections be made?

When configuring services in the DMZ to exchange data with the internal LAN which scenario would be more secure: DMZ service pushes data to LAN service or LAN service pulls data from DMZ ...
1
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1answer
257 views

A BFE registry key's ACL is flagged by Microsoft Attack Surface Analyzer - what do I do?

Can anyone help me to understand which kind of action I should make to mitigate this issue, which emerged from Microsoft Surface Attack Analyzer? How I can tighten the ACL? Is there a standard ...
2
votes
3answers
328 views

unix config scanner / compliance checks

I'm looking for a tool, that scans unix operating systems for configuration issues. E.g. a script that finds PermitRootLogin yes in the ssh config file or with other words: a script that automates ...
1
vote
2answers
344 views

Seeking advice on how to build a box to brute force hashes? [closed]

I work in a startup security firm, and I need to build a GPU-based to brute force password/hashes, which can be used to validate password strength and test hashing algorithms. I expect some high ...
2
votes
2answers
119 views

What not to reveal of OS configuration

I thought that I should publicize all my programming on a web page so someone will hire me as a programmer. I got tempted to include not only programs but my .emacs, .bashrc, and .Xresources files. ...
2
votes
1answer
803 views

Encrypting configuration on shared IIS7 hosting that uses load balancing

When hosting a site on a cluster (or cloud configuration) we need to specify a Machine Key in the web.config file. This is needed to keep the machines in sync (often the first encounter with this is ...
7
votes
4answers
5k views

What do I need to configure, to make sure my software uses /dev/urandom?

When setting up a server, what configuration changes do I need to make sure that all of the software uses /dev/urandom instead of /dev/random? Some servers don't have much entropy in the entropy pool ...
2
votes
2answers
712 views

up2date tools for security audit linux / centos

I'm setting up a new CentOS 6 server and am looking into some security audit tools to validate my configuration and to point out weak spots in the server. There are a lot of non up2date tools out ...
5
votes
4answers
455 views

Is it harmful to redirect web bugs to localhost on hosts file?

I was checking the article hosts file on Wikipedia, and I found this: Blocking access to servers of unwanted content by redirecting them to the local host (127.0.0.1) may have security ...
5
votes
1answer
272 views

What is the security impact of changing PowerShell's PSLanguageMode?

A vendor is asking me to change the PSLanguageMode from within IIS on my Exchange server(s). What potential vulnerabilities am I opening myself up to? I'm surprised to see this option present within ...
1
vote
2answers
4k views

What needs to be done on a Citrix Netscaler to protect from SSL Renegotiation attacks?

I'm under the impression that the TLS/SSL renegotiation hack has been fixed. I'm not sure if the software has to be deployed on the server side, client side, or both. Based on this blog, TLS ...
2
votes
1answer
2k views

How should I configure a Citrix Netscaler to protect against HTTP, TCP, or UDP flood attacks?

I have a Citrix Netscaler and want to configure the appliance appropriately so that it can protect my hosts from a DDOS. Is this something I can do here, or must I take action on the host itself?
2
votes
3answers
1k views

HTTPS Apache2 Information Leakage

Hello IT Security! I have Apache2 vhost with HTTPS listening on port 443, ie. https:// securesecret.com. I have another vhosts with HTTP listening on port 80, ie. http:// one.com, http:// two.com. ...
5
votes
1answer
2k views

Implications of using DNS Forwarders instead of Root Hints

When redesigning an organizations DNS infrastructure, the question of using Forwarders instead of Root Hints comes up. What kinds of issues should I be aware of when the admins and designers start ...
5
votes
1answer
236 views

What is the status of forced HTTPS everywhere (Strict transport security) via DNS? I only see last years draft

I'm trying to find the most recent RFC on HSTS in DNS (or rather said DNSSEC), but can only find this year old one in expired draft status Where can I find the most current guidance on STS in DNS? If ...
5
votes
3answers
641 views

Why would configuring a Blackberry to turn radio off when charging help with security?

A friend's work Blackberry is configured so that phone and Internet access are disabled while the device is charging. I assumed this was a fault, but apparently it's a deliberate security policy. Has ...
1
vote
0answers
325 views

PF NFS Firewall Issue [closed]

I have a question about NFS and PF (freebsd). I know that NFS uses both TCP and UDP to connect to the client along with a bunch of daemons that use random port numbers. Both the NFS server and ...
18
votes
1answer
3k views

Guidance for implementors of HTTPS-only sites (Server side)

The recent trend in HTTPS attacks is to attack the HTTP protocol. What should I do to increase my site's security if the only protocol I want is HTTPS? Some easy to implement ideas are Implement ...
5
votes
5answers
459 views

Any value in a web-server closing connections on bad requests (or bad pages)?

At least one web-server, nginx, has the ability to "close the connection without sending any headers", by configuring it to return a (nonstandard) 444 to various malformed HTTP requests. Is there any ...
9
votes
1answer
870 views

Strict Transport Security — max_age value

I've been wondering what max-age should the HTTP Strict Transport Security header have. Both paypal and lastpass sites leave it very low: 500 (seconds = bit over 8 minutes) market.android.com has it ...
12
votes
3answers
342 views

Verifying server software integrity?

I'm trying to brainstorm a security scheme for the problem of verifying server software integrity. The domain of this problem is Game Servers built on Valve's Source Dedicated Servers. These servers ...