Authorization is the process of determining whether a user, program or device is allowed to access a protected resource in a particular way. Authorization is a key theme in computer security practices.

learn more… | top users | synonyms

4
votes
2answers
133 views

using two passwords for normal and security critical functions

a user (can be admin) for example in a website has: a password that is used for normal and everyday access (not security critical actions). another password that is used for performing security ...
-4
votes
1answer
438 views

Feasibility of brute-force on online password [closed]

I am familiar with how offline brute-force attacks work. But for online accounts, assuming no social engineering, how feasible is it to brute-force attack a password? For example, is this dependent ...
-1
votes
3answers
699 views

Connect to Mysql database from remote host without remote access [closed]

I have a website which is managed through CPanel. I know that remote database connections are disabled by default and I have tested that it is indeed disabled. I know that many people have some of my ...
5
votes
2answers
93 views

Preventing fraudulent access to restriced resource on the web?

I'm working on a web application along with a web API and I've been warned against what seems to be a basic vulnerability: not checking that the user making an action has sufficient privileges on the ...
2
votes
2answers
190 views

Does providing OAuth for mobile apps pose a security threat?

Let's take a look at the basic OAuth workflow: The basic idea is that the Consumer (App) asks the user to grant him access to the Service Provider. The service protects the user by asking him each ...
2
votes
1answer
699 views

SSH says Authentication tried for XX with correct key but not from a permitted host

I am using and authorized_hosts file to authorise certain keys. One of those is restricted with the prefix from="1.2.3.4", the others are valid from anywhere. When accessing from a machine that has ...
1
vote
1answer
887 views

How WEP/WPA authentication works in a WiFi environment?

I'm looking on a clear schema that would explain how a computer connect to an WiFi access point (WEP or WPA in any version (1,2)). The basic schema would be : Computer looks which AP are available ...
4
votes
3answers
3k views

SAML2 vs. OAuth - What are some reasonable relationships?

I have a service that allows SSO via SAML2. When SAML2 is used, we delegate the entire authentication process to the Identity Provider. We are considering adding OAuth in order to support some ...
3
votes
1answer
393 views

user/pass auth vs hmac signed for REST API

I know they both prevent the RESTful APIs from abuse. Hmac signed api is commonly used than the other. But I think using user/pass pair for authorization is more security, here's the reason: To sign ...
2
votes
1answer
97 views

Best practices for setting up client connections to a server with app credentials

The question title is... ugly to say the least. Here's an overview of what I've got: I work on an online tool. Data is sent to it, it processes the data (an intensive task) and sends results back. ...
-1
votes
1answer
596 views

Can File Sharing being Controlled by Mac Address? [closed]

I am currently setting up secure environment between 2 pc in isolated network. Just wondering can we do file sharing based on that pc mac address instead of username? The environment is OEM Windows ...
0
votes
1answer
108 views

Implementing secure login for an API

I am implementing a web api with which I plan to authorize access by accepting a username and password and system name and returning a sessionid which can be used on subsequent calls to authorize the ...
1
vote
1answer
717 views

CSRF with OAuth or Bearer Authorization headers

I am designing a RESTful API which is to be accessible from a web browser. The API is protected by Basic authentication. I understand the concept of CSRF, and the mitigations proposed (I found both ...
1
vote
1answer
734 views

iOS auth/auth with a REST Webservice

we're currently in the design phase of a new "Gateway-Server" which we want to develop. Our server has a REST-Service. My task is to find viable options to protect the access to the aforementionend ...
0
votes
1answer
94 views

What are the dangers of client side authorization? [duplicate]

What are the dangers of client side authorization? Where client side authorization should and should not be used?
4
votes
4answers
165 views

How can an Subject only read and write to its owned objects?

It appears that in RBAC, a Subject creates a Session with an Active Role(s), these Roles are then used to determine what permissions and actions can be taken. This appears to be fine for most of our ...
2
votes
3answers
461 views

Using RADIUS for host authentication

Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a ...
1
vote
1answer
165 views

Are there any solutions available which conform to AAA protocol?

According to Wikipedia (http://en.wikipedia.org/wiki/AAA_protocol) In computer security, AAA commonly stands for authentication, authorization and accounting. It refers to a security architecture ...
18
votes
3answers
1k views

ZX Spectrum tape loader: how was copy prevention implemented?

I am curious how copy prevention was implemented for games or other programs loaded from cassette on the micro computers of the early 1980s, such as the ZX Spectrum 48k. If I recall correctly, some ...
3
votes
1answer
2k views

what is the role of RADiUS server and Active Directory to increase the security in wireless networks?

In the CBT Nuggets Video Training, one slide about Wireless networks : i want to know about the role of Radius to increase the security and how? in this project: Deploy Active Directory and ...
6
votes
1answer
663 views

Do I need to keep the NTLM token in the HTTP Authorization header a secret?

I'm troubleshooting a problem with one of our vendors and plan to send them a Fiddler trace of the http traffic between the client and our servers while replicating the issue. Our servers use NTLM ...
-2
votes
1answer
841 views

Credit Card Error. What doe “Bad Track 2” mean? [closed]

I am receiving this error when a customer is trying a transaction. What causes it?
1
vote
3answers
539 views

Validate hmac with hashed stored key

What if an HMAC is correctly generated and sent with the data to the server, so far I know the server needs to know the original data with which the MAC was created in order to re-create the MAC and ...
1
vote
2answers
457 views

Is dual control password is a feasible way to secure against unauthorized login?

I see that some organizations practice dual control password especially when it comes to critical system logins, etc. Is it feasible to implement such policy considering certain trade off such as ...
1
vote
1answer
602 views

authorization vs federation vs entitlement

I am vague among the three following terms: authorization, federation, entitlement (as stated by the OpenAM product: OpenAM provides open source Authentication, Authorization, Entitlement and ...
3
votes
2answers
162 views

Secure Spring FrameworkUser Management

I got asked this question: "Any decent reusable / plug-able Spring user management systems (registration, change pwd, reset etc)? How do you guys do authz in Spring, including managing those roles ...
9
votes
2answers
3k views

OAuth2 Cross Site Request Forgery, and state parameter

http://tools.ietf.org/html/draft-ietf-oauth-v2-30#section-10.12 says: The client MUST implement CSRF protection [...] typically accomplished by requiring any request sent to the redirection URI ...
7
votes
3answers
3k views

How to manage admin rights for helpdesk staff?

My question is about issuing administrative rights to helpdesk staff in a large Active Directory setting. Helpdesk staff commonly require administrative rights to provide support for end users. I ...
8
votes
4answers
515 views

Does UNIX have a dual approval mechanism?

Sudo and logging is used to keep administrators accountable. But is there a command/configuration that lets you enforce a dual approval type control such as the the "Two Person Concept"? (eg. Two ...
9
votes
4answers
430 views

How should I tell an organisation that they are vulnerable when I wasn't given permission to check?

I was recently at a village hall (in the UK), some distance from where I live, for a party. I noticed that they had unsecured wi-fi with an SSID of NETGEAR. I assumed it was free wi-fi for users of ...
3
votes
2answers
186 views

What value security wise, if any, does a digital handwritten signature have?

Here's an example of what I mean: (It's basically the same thing as a traditional signature.) Given I've never seen someone fail this control, it's unclear to me what real security such a system ...
1
vote
1answer
307 views

JS frontend for RESTful backend vs authorization

I'm building web-app. And i have concern about security issues. In world a lot of similar questions, but many of them does not have really clear answer(advise,suggestion). This is the reason why i ...
1
vote
2answers
743 views

How does DCOM authentication compare to RPC based authentication/auth?

The following paragraph from MSFT Best Practices for 2003 PKI says Windows 2000 authenticated via RPC vs 2003 that authenticates using DCOM A CA running Windows Server 2003, Enterprise Edition, ...
2
votes
3answers
238 views

Verify if person belongs to the claimed university through his university email id

I need to allow users access to an application after verifying that they belong to the claimed institute through university email id. So that if a person claims that he belongs to Stanford University, ...
-1
votes
1answer
174 views

About important hacks in history [closed]

I would like to know how important hacks happened, because I can figure out how they hacked a website but I can't figure out how did they hacked into NASA International Space Station source code. Or ...
3
votes
2answers
346 views

Is there a spreadsheet/template for Mapping WebServices Authorization Rules?

I'm looking for a spreadsheet/template that allows the business-rules (i.e. 'who has access to what') to be mapped, visualized and analyzed. In the past I have created a couple of these (some even ...
10
votes
4answers
2k views

Role Based Access Control + Data Ownership based permissions

Is there a common system or pattern that combines the permissions given by a role in a RBAC-system with permissions in relation to dataownership? For example: Bob is a doctor and has the role ...
8
votes
1answer
721 views

What were the specific security flaws with OAuth 1.0? How are they being addressed in 2.0?

I read an article documenting Twitter abruptly pulling its OAuth support back in April 2009. The article said it wouldn't specify the hole for security reasons, but mentioned "social engineering" is ...
9
votes
4answers
825 views

RBAC model: user in two roles access dilemma

I am implementing the Role-Based Access Control (RBAC) model security system and I have a dilemma: one User1 is in Role1 and is in Role2. Role1 allows access to the Resource1 and Role2 denies access ...
21
votes
3answers
2k views

Pitfalls of using OAuth for mobile Applications

OAuth seems to be getting a lot of traction at the moment as an authorization solution for web applications and mobile applications. I'm interested in understanding what the pitfalls of using OAuth ...
21
votes
1answer
12k views

What is the difference between RBAC and DAC/ACL?

What are the benefits of each, and when should I choose one over the other? Are there situations where these should be merged? Do you have examples of common usages? And what about MAC, where ...