17
votes
4answers
4k views

Windows hardening

Can anyone point me at some good resources on Windows hardening? From 2003 upwards.
5
votes
1answer
850 views

Tools to identify and report hacking attempts originating inside reputable organizations?

Re: Should I report hacking attempts? - Server Fault Lots of people look at their own logs for attacks from the outside. But who regularly reports such attacks back to the source? I'm mainly ...
9
votes
6answers
9k views

Automated tools for Cisco IOS config auditing? [closed]

Are there any automated tools for auditing config files exported from Cisco IOS devices? Free/Open Source is always nice, but anything that does the job would be of interest.
18
votes
5answers
3k views

To firewall or not to firewall?

There's recently been some discussion (to be generous) about the pros and cons of having a firewall deployed in front of servers. The con mainly being that it's a point of failure in case of a DDoS. ...
9
votes
6answers
395 views

How can I ensure that default passwords are no longer in use?

There are two situations in which 'default' passwords get used on a network: A new user is registered. In her registration pack, along with her new username, e-mail address and so on is her initial ...
9
votes
3answers
872 views

How can TOCTTOU vulnerabilities within the Windows OS be mitigated?

What are some ways to mitigate the time-of-check-to-time-of-use issues that apply to Windows permissions? Example: End-user is added to the local Administrators group in order to install software, ...
6
votes
3answers
574 views

Malware nomenclature

If there a generally agreed upon naming convention for types of malware/virus? For example, are there agreed upon terms for virus, trojan, worm and the like? If one exists could someone explain it or ...
18
votes
3answers
5k views

How long should a random nonce be?

NIST provides good guidelines on the length of keys and hashes for various algorithms. But I don't see anything specifically on the length of a random or pseudo-random nonce (number used once). If ...
11
votes
4answers
474 views

What lessons about Denial of Service can we learn from Egypt's “experiment”?

Internet service was widely disrupted in Egypt starting Jan 27th at about 22:15 UTC, in the space of about 20 minutes: How Egypt Killed the Internet. Service was largely restored 5 1/2 days later on ...
9
votes
3answers
487 views

Are there any smartcard/hardware-tokens for certificate-based authentication which are easily destroyed?

It's all very well to use multi-factor authentication, but supposing you want to 'destroy a factor' so that in an situation where you are likely to be coerced to provide your passphrase, you can ...
5
votes
2answers
177 views

How can my country's legal/telecoms environment protect against cold-callers conning a remote-access session to the victim's computer?

My local region in Australia is being targeted by a scam whereby victims are cold-called and told that their computer is sending 'errors' to caller at 'Windows' which should be fixed ASAP, and they ...
7
votes
4answers
3k views

Security Services on Edge Router vs. Standard Firewall

If I can run a site to site VPN, NAT & Reflexive ACLs on a edge router (plus normal routing functions), what would be the use of running a stock firewall behind it? For instance, Core Switch --> ...
13
votes
4answers
441 views

Where are some Security Policies that are actually in use?

I know there are a lot of security policy samples and templates out in the web. I'm curious to know if there are security policies that are actually in use and still published publicly. I know they ...
6
votes
5answers
310 views

What's the real reason behind blocking the social sites? Even legitimate sites like twitter which acts as a knowledge repository?

I see some sites are blocked for IT security at schools, colleges and offices. But, why do some obvious good sites are blocked too?
15
votes
5answers
19k views

DHCP vs. Static IP Addressing

How do DHCP and Static IP addressing compare, from a security standpoint? What are the risks/benefits associated with each? I know the preferred solution between the two will vary with network size ...
10
votes
5answers
1k views

What firewall settings on a Macintosh are the most restrictive, while still permitting casual internet use?

I don't want this to be subjective, so I'll try to make the requirements as clear as possible. On a Mac with Snow Leopard, how can I set up the firewall rulesets that allow ONLY: Using the internet ...
6
votes
2answers
223 views

Concerns and Gotcha with Secure Programming Standards Development

I have recently taken on the responsibility of developing a set of secure programming guidelines. My intention is to provide, using the OWASP Development Guide as a basis, several levels of ...
67
votes
8answers
8k views

Can anyone provide references for implementing web application self password reset mechanisms properly?

We are implementing self password reset on a web application, and I know how I want to do it (email time limited password reset URL to users pre-registered email address). My problem is that I ...
9
votes
2answers
504 views

PKI solution vendor selection

What would you look for in a (X.509-) PKI solution, and why would you look for that, given the following constraints: Available programming/sw-engineering know how is limited (ie, "OpenSSL with a ...
7
votes
2answers
1k views

Classical Cryptography Tools

I'm wondering if there are any tools out there that can assist in solving classical cipher text. I'm looking into developing some tools such as frequency analysis, transposition tools and so on but ...
7
votes
4answers
831 views

Security attacks on PHP web applications

I know about following security attacks on php applications (html,php,js). XSS SQL Injection CSFR Session Hijacking /Fixation Code Injection Remote file injection Should i know about any other or ...
5
votes
1answer
562 views

Good Security tool for PHP- Suhosin vs Spike vs PHPIDS

Do I have to check/test my code beforehand, or do these tools inform me when an attempt is being made in real time? Secondly, which one should I go for -- Suhosin or Spike or PHPIDS or a combo? What ...
8
votes
2answers
1k views

What security risks do unauthorized mobile hotspot (MiFi) devices on company proprerty pose?

I'm having some difficulty determining how, or if, MiFi devices on property should be regulated. Personally, I see them as having little difference from any other rogue AP in the environment - the ...
9
votes
3answers
10k views

Why triple DES used in EDE mode?

Why is triple DES is calculated in encrypt decrypt encrypt mode? Why a decrypt in the middle? And isn't decrypt = encrypt since DES in a symmetric cipher?
23
votes
10answers
13k views

Good (preferably free) resource for CISSP practice questions

I'm looking to sit for my exam in a few weeks, and I want to have a good set of practice tests to bounce against and make sure that I'm up to par with the types of questions that will be asked.
6
votes
4answers
2k views

Initialization vector with cipher block

Is the initialization vector used to encrypt a block of data always static or dynamic? If it is dynamic then I should send the IV along with the key to the recipient right? This normally doesn't ...
5
votes
4answers
4k views

What type of cipher is RSA?

Is RSA a stream cipher or a block cipher?
2
votes
2answers
2k views

where can find sample coding for use of Bouncy Castle(java)?

I had found bcprov-ext-jdk16-145.jar and bcprov-jdk16-145.zip. I wish to use the IDEA encryption to encrypt XML, but i haven't found any sample of coding in JAVA. Can anyone tell me how to call the ...
5
votes
2answers
786 views

What kind of encryption is a one-time pad?

Is it a substitution cipher or a stream cipher or both?
14
votes
3answers
10k views

Whats the difference between MAC vs hash

What is the difference between the two algorithms? One difference that I know of, is that MAC is keyed and hash is not.
5
votes
0answers
826 views

SSL vs IPsec what's the difference [duplicate]

Possible Duplicate: What is the difference in security between a VPN- and a SSL-connection? Which is more secure? And offer better access control?
6
votes
3answers
249 views

Renew digital certificate

If I have deployed a digital certificate on a webserver and if it needs to be renewed then what steps do I need to follow? Will I need to generate a new longer public key private key pair? Why do ...
6
votes
3answers
577 views

Personal digital certificate how to verify

A server certificate would have its domain name at its subject field. A personal certificate would have your name as the subject field. How can you be sure that there are no two certificates with the ...
6
votes
3answers
1k views

Certificate chain

For my computer to verify the identity of a certain certificate should it have all the certificates up to the root certificate?
6
votes
2answers
581 views

What a programmer should know before their web service's client audit

Situation: I have created a WS client (.net wcf) for the customer that access a third party web service (Websphere). This WS uses HTTPS and I get a certificate from WS vendor. All works fine, I have ...
4
votes
1answer
90 views

Does the compiler feature of Closures decrease member variable security?

Based on this discussion, closures in C# promote private variables to public variables at compile time. Suppose a closure was implemented on a Username or Password string. Would there be any ...
9
votes
2answers
4k views

SSL Certificate revocation check

In the SSL protocol I don't see where the certificate is checked for revocation status. https://developer.mozilla.org/en/Introduction_to_SSL Is the Certificate Revocation and Status Checking not ...
10
votes
4answers
2k views

Is Facebook Connect or Twitter OAuth PCI Compliant?

We have a system that stores credit cards securely on file. We'd love to allow users to sign up using Facebook Connect or Twitter. Obviously this wouldn't be secure if we were trusting just any old ...
10
votes
3answers
3k views

Can anyone suggest good open source tools for scanning source code for vulnerabilities? [closed]

I'm particularly looking ones which detect vulnerabilities in C/C++ code. I've seen a bunch of proprietary tools but no open source ones.
0
votes
3answers
3k views

3 way authentication

Can someone please tell me what does 3 way authentication mean? I cannot understand this concept? :( Now if there are two people A and B 1.) A challenges B with a question 2.) B gives the answer and ...
3
votes
1answer
119 views

Protect file in a web site

How would you protect a password file in a web site? Is hashing the individual passwords not enough? What other steps do I need to follow?
9
votes
2answers
5k views

Encryption decryption time

Does the encryption / decryption time of rsa algorithm vary significantly with a change in key length? For example, is there a noticeable difference in encryption/decryption time between 512 bit and ...
5
votes
1answer
1k views

Clark Wilson Integrity Model: Rules

What is the conceptual difference between certification rules and enforcement rules in the Clark Wilson model? Am I on a wrong path when I assume that certification rules ensure external integrity ...
4
votes
1answer
197 views

When does one need to be concerned with leaking timing information in .NET?

According to this post, Dominick Baier was comparing two HMACSHA256 signatures and was leaking timing information upon an unsuccessful comparison. When working with .NET crypto classes, when should ...
0
votes
2answers
193 views

Create a certificate signing request [closed]

can someone please tell me a few tools that can be used to create a CSR ?
4
votes
2answers
4k views

What is an intermediate certificate authority?

What is meant by an "intermediate certificate authority?"
7
votes
1answer
3k views

Is SSL key generation client-side, server-side, or both?

Who generates the session keys for a SSL symmetric encryption? Is it the client for both client and server where client generates part of it while the server generates the other part?
3
votes
1answer
1k views

Does the Ophcrack LiveCD require hash collection via programs like pwdump?

When I used the Ophcrack LiveCD recently, the program automatically ran without me manually loading any hashes. Question is: If Ophcrack does not automatically find hashes, how can I go about ...
0
votes
1answer
154 views

Does using many XML parsers (XDocument, XMLDocument) from the public Internet increase attack surface area?

I am coding an anonymous WCF service that allows others to post XML into it. Does using different kinds of XML parsers XDocument, XMLDocument, or even 3rd party parsers increase the attack surface ...
10
votes
1answer
858 views

Relative importance of CHROOT for web servers

I have read extremely mixed opinions on the process of chrooting for a web server (non-shared environment). Some people swear by it, yet others say that it isn't as secure as everyone says. Given ...

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