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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66 views

Securing apache by IP with .htaccess

I have a folder that I don't want to be accessible from outside my network's LAN. It seems like all traffic from the outside world goes through my firewall (192.168.1.39). So I made my .htaccess as ...
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3answers
48 views

Restrict access to admin area by checking SSH connections

Assuming that the users have dynamic IPs (so I can't whitelist) and that setting up a VPN is not an option, is it a valid approach to restrict access to an administration area by only allowing IPs ...
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1answer
580 views

Protecting MYSQL with Fail2Ban? [closed]

I have a bunch Raspberry Pis collecting data from behind client firewalls. I want to start sending this data to MYSQL server. Because the Raspberry Pis do not have static IP addresses, I obviously ...
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1answer
59 views

access control-intersection of subjects’ permissions

In the book named "operating system security", I read this paragraph: "Protection domains can also be constructed from an intersection of the associated subjects (e.g., Windows 2000 Restricted ...
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3answers
224 views

Storing passwords and other data for coworkers

At the moment we are encrypting our server passwords and other important data internal via PGP. Every coworker has got his/her own private key/pass combination set up on their workstation. The problem ...
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1answer
80 views

how to stop write downs

Consider a scenario with two security levels, Alice and Bob. Bob is Alice's boss. Bob must be able to read Alice's documents but not write anything to her documents. I am using encryption keys to ...
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1answer
99 views

Credentials using AWS IAM

I have a server, which should provide temporary credentials to the client. The credentials will be transmitted using HTTPS. The client should be able to upload S3 files, as well as download them. The ...
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votes
1answer
102 views

Implementation of a FREE web filter [closed]

I just want some advice for the implementation of a web filter for a school network. Just want to block some contents and url. A free tool should be fine I guess. Any recommendations? Thanks!
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1answer
152 views

Best practice for selective opening of ports on network gateway

Our network is currently isolated from the outside by a Linux box, running iptables and Squid to control web access. By default we deny all outgoing traffic from all IP's, to force Web traffic ...
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1answer
46 views

Can I use stormpath user management service with a XACML library like BALANA?

I'm trying to implement some security access control in a software I'm building. I came across Stormpath for user management and they have somewhat an approach for RBAC yet what I was considering is ...
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0answers
38 views

Why allow access without an access token but deny access with an invalid access token?

I encountered a data storage service with rather weird access policies. There're "folders" with "files" and each "folder" can have either of the following permissions: anyone in the world can ...
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1answer
85 views

is UPnP / NAT-PMP really necessary today?

The possibility to enable port forwards for any hosts inside the LAN has of course security implications. The problem from my point of view is not that there are bad users, but bad hosts/programs and ...
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0answers
28 views

Bell-LaPadula implementing by using sets of roles

I have sets of roles defined hierarchically, i.e. role anonymous is a subset of role super-user. The roles are given tu users and also used in the ACL for marking who has access to a resource. ...
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0answers
76 views

Since when Access-Control-Allow-Credentials is required?

About several years ago I found a website during a pentest which had the Access-Control-Allow-Origin header set to "*". I made a POC to get the response of a webpage from an untrusted domain. The goal ...
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1answer
503 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 ...
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votes
1answer
67 views

Relative costs involved in making changes to the current organisational security

I need help understanding what is required by the phrase "a comparison of the relative costs involved in making changes to the current organizational security procedures". Am I to compare the cost ...
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3answers
465 views

How information in an access log could be used to identify the true identity of an impostor?

Is it possible to use information in an access log to identify the true identity of an impostor who has acquired unauthorized access to a computing system (Perhaps by combining several different ...
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votes
1answer
105 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?
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4answers
205 views

what will happen if us government shutdown Tier-1 internet backbone?

what will happen if us government shutdown Tier-1 internet backbone? Although Internet is designed to be quite resilient: Internet BackBone The Internet, and consequently its backbone networks, ...
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votes
1answer
155 views

setting up website for logged in users, anyone, and files no one should see (via the web) [closed]

I asked how to prevent not logged in users from seeing certain content but the solution I chose to implement encountered a problem. I chose to make my root directory for the server C:\WAMP\www\public ...
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votes
2answers
100 views

Is there a difference between Broken Access Control and Insecure Direct Object reference? [closed]

According to me,if this difference is correct,it is that for exploiting a broken access control you don't necessarily need to be logged into the application,but for exploiting insecure direct object ...
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votes
1answer
97 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 ...
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votes
1answer
102 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 ...
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votes
0answers
20 views

Page Access Authorization [on hold]

I'm trying to figure out how to give users access to a certain web pages based on the user having ownership of a certain file and file type. For instance, The user can't have access to the page unless ...
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votes
5answers
3k views

How can I configure my router to prevent connections bypassing it?

I am trying to configure my router to control access for several of my devices at home. I am currently using a linksys router. Our home consists of three devices (a desktop, a laptop, and a ...
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votes
5answers
599 views

Google Calendar has events that I didn't create and it's not shared

This has been rewritten because at first I thought this may be an accident but now it’s clear there’s a security compromise. In my Google Calendar I noticed an event that occurred each day from ...
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votes
1answer
181 views

How could an attacker have gained remote access to my laptop? [closed]

I have a 15 yr old daughter who's become not only a certified Microsoft Expert, but by pure accident, it came to my attention she'd long ago created a SPLIT network connection on our internet, HIDDEN ...
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votes
3answers
185 views

wireless security concern [closed]

My small office has Netgear Router (N300 DGN2200). I had it secured using "password" . So any computer which needed access had to give the security password. But today a outsider accessed my router ...