A security mechanism which enforces policy describing which requesters may perform operations on specified objects. There are typically multiple types of operations. Common operations include: read, write, execute, append, create, and delete.

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2answers
417 views

Isolating guest networks

I'm setting up a secondary guest wifi on my router and I want to make sure that it's impossible for clients connected to the guest wifi to access my primary network. Initially, I used IP filtering ...
4
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3answers
246 views

Governement like classified information system

I need to implement a classification system for my company, similar to the government's. I'm working for a company working with the government. The classification system in my country isn't public so ...
2
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1answer
1k views

Is htaccess secure enought to whitelist clients IPs?

I'm using .htaccess to control source IP of connections to my web application. My configuration looks more or less like this: order deny,allow deny from all allow from X.Y.Z.Q These ...
0
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1answer
516 views

Can I use a vpn to securely use prototypes of webapps from my phone or laptop?

I want to experiment with web development (using django) for both desktop and mobile. Server, phones and desktops could all be part of the same virtual private network. The VPN will be from some ...
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1answer
186 views

physical access proof smart card for disk encryption [closed]

Current full disk encryption on mobile devices rely on low entropy passwords like PIN numbers or pattern locks. Being able to use a smartcard with such mobile devices is a tempting idea. I know that ...
12
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3answers
612 views

Given SSH access, what should I do to protect a server and monitor (dangerous) user actions?

Context: Small business, mostly a software house for web applications but also some desktop software. Many external collaborators, so a variety of outside users with access to the servers. Single ...
1
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1answer
145 views

How secure is the web-based file browser that comes with my NAS?

I have a Buffalo Linkstation Pro 2 Duo for home use. It has a web GUI for browsing the contents of the NAS (distinct from the admin interface). The idea is that you would expose the web GUI to the ...
1
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1answer
85 views

Storing opened mail attachments unencrypted in /tmp is a normal thing?

So there is an E-mail client. I can encrypt its database with a few clicks in its menu. But it's storing the opened attachments unencrypted in /tmp/foo/bla.xls. The bla.xls has 644 UNIX permission (...
51
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8answers
4k views

I'm an IT consultant. Should I discourage a client from telling me his password?

I'm an IT consultant. One client has known me for a few years. He wants me to do some work on his kids' laptop again. I'll need to log into his kids' Windows user account. (I'm guessing that multiple ...
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2answers
299 views

How to restrict access to unwanted sites?

I use Ubuntu 13.10. I tried to used OpenDNS to restrict some websites. Unfortunately, I couldn't do that. I use AirStream 1200 USB modem to access WiMax internet. OpenDNS setting didn't work for me at ...
3
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1answer
771 views

Limit BitTorrent Sync connections to a specific network

Is it possible to limit BitTorrent Sync connections to a a specific network using the client software? Right now the closest I can come up with would be IP limitations imposed on each client using a ...
4
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2answers
173 views

Is there a security advantage to requiring a user id instead of just /me in an api request?

Is there a security advantage to requiring a request to conform to /api/1234 instead of /api/me? Both would obviously have access tokens. My guess is that api/1234 is more secure because if someone ...
12
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3answers
9k views

Prevent acccess to the C drive on Windows systems

Is it possible to prevent regular users from accessing the C drive via Windows Explorer? they should be allowed to execute certain programs. This is to ensure that employees cannot steal or copy out ...
3
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1answer
3k views

Wireless MAC Address Filtering - Authentication/Association

Can somebody explain to me how a wireless AP denies access to the network if the client does not have the correct MAC Address. Does it not send a probe response when a client has not got a correct ...
4
votes
4answers
199 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 ...
11
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2answers
2k views

Best practices for implementation of role-based access control in healthcare applications

Amongst the open source EMRs, which ones may be good to learn from? Any references I can go to as a starting point?
1
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1answer
83 views

How to restrict access to a resource based on frequency of access?

I want to restrict access to a particular resource based on time (configurable). So suppose user A has time t configured from him. He can access the resource only once every t time units. The values ...
0
votes
2answers
595 views

File shares from a DMZ into an internal network

We have a firewall policy that prohibits MS RPC through firewall, particularly from internet facing DMZ's back to the internal network. There is a business unit requesting an alternative method to ...
1
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2answers
222 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 ...
8
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2answers
292 views

What's ownership concept for?

I fail to grasp the necessity of using concept of owner (ownership) and find clear explanation of its necessity. What cannot be done without concept of owner(ownership) in filesystem/database object ...
0
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1answer
40 views

Restrict access to a specific type of entity

I want to create a web service that can only be accessed by a specific type of entity: my own mobile application. Is there any well-accepted methods to do this? I'm thinking about embedding a secret ...
15
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6answers
12k views

Difference between Privilege and Permission

I am a little confused on the contextual differences between permission and privilege from computer security perspective.Though I have read the definition of both the terms but it will be nice if ...
21
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7answers
2k views

My company policy states I must put all passwords in a password safe shared with management. Is this secure?

As the title says, my company has a policy that all passwords to e.g. our workstations and server logins must be stored in an online safe. I won't say which one but there are some out there you can ...
16
votes
3answers
934 views

Risks of Mullions in High Security Areas

I have a storage space full of information assets. The room itself is sound; there are no windows, the walls go all the ceiling, and there is only a single entrance with two good stout doors and high ...
6
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1answer
155 views

Building access card that has an identification role

The main question is should a building access card have the corporate logo on it? In this organization, the employee ID card is separate from building access card. We currently do not have the logo ...
2
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3answers
410 views

Remote Connection Tampering

My small high street laptop repair/service/maintenance shop has been up and running for about 3 years. It's doing quite well so I'm looking to expand into other areas of the PC market. One area I ...
6
votes
3answers
6k views

Role vs Identity based authentication? What is the difference?

What is the difference between role-based authentication and identity-based authentication? If a system uses ONLY a password mechanism to authenticate operators (different PIN for Admin and User) it ...
0
votes
2answers
141 views

Allow or Deny Access to a Network Based on Client Hardware [duplicate]

We have to build a product that will have a network. Users will be able to connect to this network by downloading a client. However, before allowing them to access the network we want to check if ...
13
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2answers
2k views

Why do some Java APIs bypass standard SecurityManager checks?

In Java, normally permission checks are handled by the SecurityManager. To prevent untrusted code from invoking privileged code and exploiting some bug in the privileged code, SecurityManager checks ...
1
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1answer
1k views

Possible to limit server connections to clients with a specific certificate?

Usually when I read about SSL and HTTP it says that the certificate is set up to authenticate that the host is who it says it is. Is it possible to configure the host to prevent it from processing ...
4
votes
2answers
16k views

How to detect/list rogue computers connected to a WIFI network without access to the Wifi Router interface?

This is what I believe to be an interesting challenge :) A relative (that lives a bit too far to go there in person) is complaining that their WIFI/Internet network performance has gone down ...
1
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1answer
84 views

Starting point for Mobile Device Security particularly in a MDM setting?

I am looking for some good reference material (books, blogs, names, etc..) regarding Mobile Device Security. I am specifically interested in Corporate Mobile Device Management (MDM) where often ...
4
votes
4answers
4k views

Block unauthorized user from getting access to intranet

What's the common way to block users from accessing intranet? Right now, whoever plugs in a cable can access any intranet server freely. I want to change this behavior. But given that we run not only ...
0
votes
1answer
828 views

Who to assign read/write access rights for a single-user application to run correctly?

My application installs for a single user on a Windows machine. Any user may install the application for himself, but the application will save some information common to all users in a separate ...
7
votes
2answers
577 views

Full-disk encryption and theft mitigation?

Is it possible to combine the security of full-disk encryption (e.g. Truecrypt) with the honeypot-like performance of anti-theft tools (e.g. Prey)? In other words, is it feasible to have both strong ...
0
votes
2answers
192 views

How to allow only the public key owner to submit requests to my site? And what is this type of security called?

This was probably asked many times here, but I'm not finding any because I'm not sure what to look for. I'm developing a simple payment gateway, where partners (consumers) can submit requests so ...
2
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1answer
809 views

OAuth: client credentials vs tokens

Wouldn't it be much simpler and virtually equally secure to replace tokens by pure client credentials? Client credentials wouldn't expire and resource owners would always be able to modify their ...
5
votes
3answers
612 views

How can i deal with management who want 'Domain Admin' access?

While I primarily work with penetration testing for my company (A small/medium sized company with approx 50 employees), I'm also a part time member of their sys-admins team (it's handy to keep up-to ...
8
votes
1answer
292 views

Using / finding covert channels in inter-process communication

I've got a class exercise that involves a virtual game of Werewolves/Mafia. We're not really taught how to do anything in this class, which makes it hard for everyone to do the labs. The idea is that ...
2
votes
3answers
191 views

Why are UNIX-like ACLs not a form of MAC

What is the reason for UNIX-like access permissions (both the traditional user-group-others and extended ACLs) being classified as a form of DAC (Discretionary Access Control) system and not MAC (...
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votes
1answer
107 views

For a Broker/Dealer, what technology is appropriate to limit transaction to a given state? [closed]

The SEC allows for individuals to not register with them if they don't permit business with users outside of the state: A broker-dealer that conducts all of its business in one state does not ...
3
votes
3answers
2k views

Using /usr/bin/passwd as login shell

I have a requirement to set up a SSH tunnel between two hosts. SSH server runs on a Linux host, and the SSH client (PuTTY) runs on a Windows host. I have set up a separate user account (say 'tunnel') ...
2
votes
3answers
593 views

MySQL database access prevention

I am doing a PHP website for a client who deals with third party financial information, and he is concerned about the developmers (me) having access to all the information, which is obviously a valid ...
3
votes
2answers
121 views

Authorising use of apps from a public store with no back end service

I have a project I'm involved in which needs to distribute a mobile app to a specific audience. Due to regulatory restrictions in the target market, only this audience is allowed to access the data ...
3
votes
3answers
4k views

Should I give developers admin rights or leave as power users? [duplicate]

In my organization we are in the process of upgrading everyone to Windows 7.We have all of our users configured as power users. The issue we are running into is this: Should we give developers local ...
7
votes
4answers
2k views

Safest way for multiple users post to a single social networking account

Suppose I have a team or organization managing a single twitter account and a single facebook page. Different users need to be able to post content to the same account. How can I minimize the risk of ...
4
votes
2answers
970 views

How can the low-water mark property apply to Bell-LaPadula?

I am taking a computer security class, and have a homework problem which has the following setup: Now assume a dynamic version of the Bell-La Padula Confidentiality model that incorporates a ...
-1
votes
1answer
116 views

Bringing in an intern

When bringing in an intern to help you in the IT world and with access to servers and client information, what kind of forms should be signed, especially when they work remotely?
2
votes
2answers
624 views

MySQL Access Control?

I have read somewhere that it is better to have two different MySQL logins in order to prevent hacking. What I mean is having one MySQL login for read access (SELECT permission) and another login for ...
20
votes
5answers
119k views

Can someone steal money from my bank account if they know my IBAN and personal details?

To deposit money into your account, some websites require that you provide them with a lot of details about your bank account: name, complete address and IBAN which includes your account number and ...