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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How do i restrict network access to LAN for Visitors

How do i restrict network access to LAN for Visitors In my organization premises any outside visitor comes and connect to LAN ports in meeting rooms.We have seen that they are able to ping internal ...
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5answers
128 views

Is there a term for Authorizing before Authenticating? Is it even common?

In most scenarios a person identifies who they are (authentication/AuthN) via something like a username and password. Afterwards a system would likely evaluate what that validated identity can perform ...
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2answers
70 views

user roles or access levels

I am beginning a new project and I already know that I'll have various roles for various users, regardless of their access level. They just have different jobs to do. With that in mind, I'm thinking ...
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3answers
3k views

how safe is a home NAS with ssh access?

I'm thinking about acquiring a NAS from Synology (or QNap), these are pretty cool NAS and do much more than just storing files. Some extras include: ssh, ftp, telnet, mail servers photo gallery ...
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1answer
360 views

Installing applications with different user accounts on linux

I have basic question about installing applications on Linux operating system, using the Oracle database as an example. When installing the Oracle database package, I created a user called ora112, a ...
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3answers
1k views

How to set password on applications in Mac OS to prevent an administrator to start them?

Is there any program that can set password on the app like mail or browser? I know about parent control, but I doesn't work with administrator account. What I want is some program that blocks some ...
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1answer
85 views

Security controls to implement on a private environment

On a large project, my company is responsible of administering the internal servers where applications used within the intranet are installed. One of our sites are accessible from outside but we do ...
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1answer
114 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 ...
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1answer
161 views

How do automated systems store their keys securely?

As with many systems (primarily websites) there are automatic components that run on a server and are not user based (such as crons) that don't have the opportunity for a real person to input a secret ...
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2answers
128 views

Contactless session on ATM?

I'm currently reading about an access control and saw something interesting about smartcard contact & contactless. From what I understood from the book, smartcard contact is like an ATM Card. ...
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2answers
43 views

Should application logs be available to admins or just superuser?

I'm developing a kind of standard web-application, to be hosted internally on few customer's servers (not a public service, startup or anything like that). A kind of CMS, e-learning platform or ...
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1answer
64 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 ...
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1answer
657 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 ...
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1answer
278 views

What are the basic implementations that make a network secure from the inside\outside?

Would you consider the following to be "basic hardening items" for network equipment and servers? VLANs Access Control (such as NTFS permissions) Patch Management System Host Firewall Anti-Virus ...
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1answer
256 views

Can HIPS software practically be considered a form of MAC

Host Intrusion Prevention Software can restrict applications from taking certain actions regardless if they have the privileged to do so as assigned by the operating system. Given that with the use ...
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2answers
429 views

Star property in read/write access

The * star property requirement for append access [SC(S) <= SC(O)] is looser than for write access [SC(S) = SC(O)]. Can someone explain the reason for this?
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1answer
59 views

Is it safe to store important data in an encrypted access token?

Is it safe to store important data in an encrypted access token? For example, instead of storing access tokens in a database, not storing them at all and putting their associated data into them before ...
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1answer
63 views

Is open-to-all CORS safe for non-cookie-based authentication schemes (e.g. OAuth)

I'm building an API with both protected and public endpoints, and I'm protecting it with OAuth 2's various flows. I want this API to be open to the world - the main consumer website won't even be on ...
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1answer
189 views

Physical vs Logical - Location/Address

According to the CJIS Security Policy - Access Enforcement The information system shall enforce assigned authorizations for controlling access to the system and contained information. The ...
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1answer
63 views

what are security flaws on providing access to users through a unlisted/private/token/signed URL?

Some web applications enable registered users to grant temporal application access to un-registered users sending token/private/unlisted/signed URLs (I ignore the exact terminology for this), which ...
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4answers
186 views

Comprehensive audit of firewall - is Internet truly not accessible?

We have many Linux servers in several co-locations over the world. By design, these machines generally should not be able to access the Internet. Depending on location and role, some sites may have ...
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1answer
186 views

Is a separate 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 ...
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1answer
120 views

Spoofing and guest network security

I know a little bit about network security but it's only about enough to know there's a lot I don't know. My requirement is to add a 2nd wifi to my current setup (1 wifi emitted by a ...
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2answers
214 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 ...
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1answer
327 views

Installing Joomla with nobody:nobody user/group (CentOS/cPanel)

If you are installing Joomla via cPanel's File Manager to your mywebsite.com (user mywebsite) account, you will upload the package to your server and extract the archive. All files will have the user ...
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1answer
75 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 ...
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1answer
408 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 ...
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2answers
182 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 ...
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1answer
70 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 ...
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2answers
157 views

passwords database - access control and/or synchronization

so, we've got a ton of passwords that several different administrators need to have access to, each with their unique password/key/user/whatever... it needs to be either centralized, or the passwords ...
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2answers
146 views

Preventing Client PC's from accessing C&C machines

At my office I find us constantly fighting with malware. All users run under the "user" level, we have McAfee and have recently reviewed the Best Practices guide to ensure we adhere to it, all of my ...
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1answer
735 views

How secure is github's whitelisting CORS domains?

The Github API allows you to make requests using CORS [1]. The CORS requests are only allowed by certain whitelisted domains : Any domain that is registered as an OAuth Application is accepted. ...
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469 views

Closing handles of a process as a regular user

Here's the situation: As an adminstrator, I am able to stall the application by closing 2 handles held by the process. (Using ProcExplorer) . Is there any way/hack I can use to close file handles ...
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1answer
217 views

IPtables - Accept Arbitrary Packets

I've achieved a lot on blocking attacks on GameServers but I'm stuck on something. I've blocked major requests of game-server which it aceepts in the form "\xff\xff\xff\xff" which can be followed by ...
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16 views

Access Control that are used on Ubuntu? [closed]

I want to ask about access control that are used on Ubuntu. I already read Ubuntu Access Control List but I'm still confused. Is there someone can explain about access control on Ubuntu? Because ...
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135 views

Teamviewer Security Question

Currently we are using Teamviewer 9. We have a couple of desktop machines that are locked down in the following manner: 1). The shell is no longer explorer.exe, it is a custom program we have ...
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0answers
324 views

automatic connection from LSASS to different IPs. Is this the usual behavior?

I'm using windows 7. firefox 22. connecting through a regular residential wifi router. In the last month I've noticed that when I connect to the internet and once in a while my firewall indicates me ...
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0answers
51 views

What's The Easiest Way To Maintain Remote Users Access to a Webapp

Here is a real world case: A chain of high schools (several hundreds) has many websites (~ 3x number of Schools) that are content driven by users (the students). Every school maintains about 2-4 ...
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0answers
221 views

What is the best way to manage temporary accounts on Active Directory [closed]

The organisation i work for has a high turnover of staff and we have a 5 day SLA to set up a new user. However this seems to be inefficient for ourselves and the business we serve. Is there anyway ...
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6answers
349 views

What sort of security method is this called (if it has a name)?

I have thought of a way of securing access to an application interacting with another application. Using this method Application 1 - "What is the sum of 1+1?" Application 2 - "3" Application 1 - ...
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3answers
218 views

Is a console application with NT Authority/System rights dangerous?

A developer managed to open a console application with NT Authority/System rights at the startup screen before logging in. From that command prompt it is possible to execute arbitrary programs like ...
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3answers
288 views

Keyless entry security systems and HIPAA implications

We are upgrading our office to have badged security doors. What I would particularly like to know is if Keyless Entry systems exist or are of decent quality. By this I mean, I would like the doors ...
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3answers
154 views

What security issues will I face with outsourced VPS server?

Our small comapny wants to launch a paid service, hosted on the outsourced VPS server. The obvious risk is that the machine is physically not in our office and that possibly the database could be ...
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2answers
289 views

Can you pick up any device specific information by monitoring bluetooth signals? [closed]

Could I use some sort of permanent device ID broadcasted by the bluetooth radio in my phone to do something like unlock my door? I don't want to have to ever pair the device, or take it out of my ...
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2answers
50 views

Contents retrieved from a not protected url from content owner's server. Legal? [closed]

Is legal to use contents retrieved from a not protected url (no authentication involved, just a public accessible URL) from the content owner's server? Is legal to distribute urls pointing to that ...
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2answers
125 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 ...
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2answers
160 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 ...
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2answers
494 views

Access control matrix and integrity

Can access control matrix in addition to confidentiality provide the integrity of the objects to which access is being controlled?
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3answers
202 views

Using remote desktop

I was having trouble getting Outlook to work with my schools email account and called the help desk. They gave me a link to install a program called Bomgar. I installed it and clicked "allow viewing ...
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63 views

How many accounts should I have in an information system?

Is it a problem to have more than one account in an information system from security point of view? Let me clarify a bit. It is a bank system. I wonder if having a CSO (customer service officer) ...