Questions tagged [whitelist]

A whitelist shows data that specifically is allowed. All other data (not on the whitelist) will be filtered out or ignored. A whitelist is the opposite of a blacklist. - Whitelist - only these things. - Blacklist - everything but these things.

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116 views

How to allow access from just one IP in htaccess

I have a public hosting server. I want to give access to it only from one specific IP address. Since it's a public hosting I don't have access to its infrastructure or apache configuration. I can ...
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Steps to secure unpatched devices behind home network

I have a few outdated and unpatched devices (e.g. Android tablet and network camera) that I'd like to use for "trivial" tasks like watching YouTube, reading PDFs, and being a baby monitor. Assuming ...
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90 views

Pentesting Webserver Dead End (MySQL White Listing Bypass)

I am currently pentesting a webserver running MySQL, managed to obtain its db configuration (w/ login credentials) but the hostname is in a Local Area Network. The server has white listing enabled, so ...
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As a Software Industry Editor, how to avoid my software being quarantined?

I'm a well established software company. For more than 30 years, my business has been delivering both hardware and software. My Windows software is being quarantined by some of my customer's ...
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1answer
170 views

Why does Portswigger's solution to the lab “SSRF with whitelist-based input filter” work?

The URL with the exercise is: https://portswigger.net/web-security/ssrf/lab-ssrf-with-whitelist-filter The solution is: http://localhost:80%2523@stock.weliketoshop.net/admin/delete?username=carlos A ...
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81 views

The security of IP whitelisting large ranges

I am not a network expert but; a recent conversation has come up with a client asking to whitelist a range of ip's (let's say 250 odd for now) to transfer their data to us for processing. I should ...
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843 views

Firejail Blacklist/Whitelist Priorities

I have defined the following: whitelist /home/user/.mozilla/firefox/ noblacklist /home/user/.mozilla/firefox/ blacklist /home However I get: ls: cannot access '/home/user/.mozilla/firefox': ...
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1answer
75 views

Whitelist Simulated phishing landing page

We are running a simulated phishing campaign and one of the landing pages has been blacklisted by google. If you try to visit it in chrome you get the big, red warning page "Deceptive site ahead" (...
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912 views

What are the benefits of using IP whitelists to secure cloud servers/resources?

Consider the following scenario: There is a "server" (e.g. database, API, etc) that is "in the cloud" (i.e. hosted on physical hardware that is physically distant from the clients and reachable only ...
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2answers
837 views

Is IP whitelisting safe enough for a HTTP Basic protected service available on the internet?

We are discussing about making available through the internet one of our microservices deployed on a public cloud on Kubernetes. This ms offers some sensitive information to the clients. This ...
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1answer
158 views

On-site Whitelisting vs. Off-site Cisco VPN

A company I’m applying to as web software tester is requiring me to be on-site so they could put me on their whitelist. However, I had a previous job which allowed me to work anywhere, using only ...
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220 views

IP-whitelisting for DB access, does solution fit best practices?

All the data we have on our customers sits in our data-lake, which is hosted by one of our suppliers. Currently the security is such that a limited number of users has (limited) access to the database ...
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1answer
115 views

What port state to expect from Nmap when scanning ports that are open only to specific IP addresses

My firewall has a few ports open but traffic is only forwarded when coming from specific IP addresses (whitelisted). When scanning these ports with nmap from a non whitelisted IP address, what state ...
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1answer
850 views

Could an attacker spoof a whitelisted IP to access the network?

There is a network that is protected with a firewall and only one IP is whitelisted. Assuming the attacker knows the whitelisted IP, what would prevent an attacker from sending traffic via a spoofed ...
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466 views

How to check if direct debit whitelisting is in place for a specific account number?

Paying through bank transfer to other account without direct debit is more and more common these days. Some of them are online services running bug bounties with availability of payment through bank ...
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When using Symantec security, is our IP address our own or shared, should we whitelist?

The company I work for uses Symantec security. When I am connected to the network (by cable) I can see that my IP address is registered to Symantec. My question is, do other companies that are also ...
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1answer
48 views

Whitelist outbound mail [closed]

Is there a way to limit the list of mailadresses a user can send mail to, to a small whitelist of approved addresses? The only option I can think of right now is a customized contact form, but I'm ...
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67 views

domain names with email whitelisting

We have white-listed full domains and that creates uncertainty i.e. myservice.com Anyone can send spam mails and we can't block it. We have white-listed specific emails / IP addresses and there is ...
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585 views

Whitelist Application For Windows Server 2012

My problem I am looking for an application which runs on Windows Server 2012 for security reasons. Our server began attacked on many protocols. They are trying brute force attacks with very weak ...
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1answer
117 views

Why should class names be whitelisted?

I am using the Accept known good validation strategy to sanitize user input (rich HTML) and are using a 3rd party component to do this. The component by default requires every permitted class name to ...
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880 views

Is SSH public key authentication sufficient for protecting a server if IP Whitelisting is disabled?

I'm currently working for a startup company who maintains a server on AWS. Currently, our server is set up so that in order to access it via SSH, you need to be on a white listed IP (set up in AWS) ...
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154 views

Has there ever been a country that implemented whitelist-based internet censorship?

We hear time and time again of countries censoring internet traffic by blocking IP Ranges. Without getting into the politics of it, let's take for example China's Great Firewall. Even though it is ...
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201 views

How safe I am without antivirus on Windows 7 with restricted security policy enabled?

I've Windows 7 with latest updates without any antivirus software. I use ZoneAlaram Free Firewall to restrict application from accessing Internet without my knowledge (every new application requires ...
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1answer
1k views

Difference between Knowledge-based IDS and behavior-based IDS

I have difficulties in understanding the difference between Knowledge-based IDS and behavior-based IDS. This link says that a knowledge-based IDS uses a database of specific attacks and system ...
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1answer
3k views

How do I setup SELinux to act a as a true whitelisting solution?

I am working on an appliance device running Linux. I would like to utilize the work done so far with the targeted policy in SELinux space. Since I own everything that should be installed and running ...
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1answer
109 views

Network Defense- White listing IPs/Ports

If I had a typical home user machine (google, email, youtube, no ssh/ftp, etc...) that had a dynamic iptables white-list that was dynamically updated with IP addresses that have been legitimately been ...
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3answers
159 views

If LDAP credentials are leaked, is IP whitelist still sufficient protection?

In a situation where LDAP credentials get leaked but there is still an IP whitelist in place... My gut feeling says this isn't right; the credentials should be changed. Is this correct? What ...
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3k views

Whitelisting only particular hosts on Windows 10

There is a laptop which is to be secured and only certain websites should be accessible. Reason is possible data theft by user or malware, from vpn-only-accessible websites which this laptop will be ...
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4answers
256 views

Are there tools that can prompt the user every time an executable uses system functions?

As a programmer I don't use anti-virus programs for a simple reason: I found that viruses are only detected once the executable or a part thereof has been explicitly blacklisted by the anti-virus ...
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2answers
1k views

Limit web-browsing to list of known well-known websites (whitelist)

I'd like to limit web-browsing to number of websites owned by known internet companies, for example: Google Websites Microsoft Websites Amazon Yahoo Ebay News Etc I understand I can't do it myself ...
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1answer
557 views

What resources/organizations should we submit applications to for testing, to prevent Anti-Virus “False-Positives?”

A friend's company just released an application recently, which received a false-positive warning with Norton AV from a client. He found something on Norton's website that I believe he said was a ...
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5k views

CORS REST API whitelist

I have a REST API. I want to use this API from multiple web applications. I want to only allow requests from Whitelisted clients. My first point of call would be to add the necessary headers to the ...
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3answers
756 views

When is IP blocking OSI level 7 only and what is the purpose of doing so on multiple locations?

Let's say there is an application that has IP whitelisting, all other IP's are denied. This check takes place on three different locations: iptables, .htaccess, PHP script. Now in what OSI layers ...
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2k views

How effective is MAC whitelisting on a Wireless Access Point? [duplicate]

For the sake of context, let's say I set up my home router with WPA2, a strong passphrase and I whitelisted all of my devices. I know the data is encrypted, but is the layer 2 header encrypted as ...
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1answer
577 views

Application Whitelisting Approaches/Options on non-Enterprise Windows PCs

For a while now I've been kicking around the idea of implementing application whitelisting on a few sets of machines (owned by 2-3 different consulting clients) I administer that seem suitable for it. ...
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1answer
222 views

Why not just blacklist every IP except yours?

Inspired as a continuation of this question: Is it practical to pre-blacklist certain GeoIP regions? Why would it not make sense to blacklist every single IP address that shouldn't have access to a ...
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1answer
79 views

Are there any standard practices for protecting against malicious links being entered in a public form?

A website I'm working on needs to have a form for any visitor to submit a request for information about a service. The user will not need to create an account, and contact details are just part of the ...
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4answers
5k views

Can or should whitelisting replace encryption?

I've noticed that there is a third-party webservice we utilize programmatically at my job to transmit somewhat sensitive information and I was surprised to see that the endpoint was only using http, ...
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2answers
6k views

Is there a difference in security between an IP address white list and a domain white list with TLS?

It seems to me that an IP address white list relies on easily spoofed information, while a domain white list, if it forces TLS, at least, relies on the validity of the certificate systems. I may be ...
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1answer
37 views

Technical term needed: Per default secured / blacklist vs whitelist

I'm currently working on a homework and missing a technical term / known best practice to describe what I have learned or what I feel that is better. It is about a publish / subscribe architecture, ...
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2answers
488 views

DDoS Mitigation - Whitelist or Blacklist Incoming SOURCE Ports?

For a network offering webservices, I have had recommendations to blacklist a couple of common incoming DESTINATION ports, such as UDP 53, to combat the increasing load from DDoS. I'm wondering if it ...
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217 views

Legally port scanning (Whitelist)

I am attempting to set up a security vulnerability scanning server. I have several customers interested in using it to scan their systems. I will be port scanning and carrying out intrusion detection, ...
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2answers
318 views

Vulnerability scanning: White list pentester or not?

If your company engages a third party pentester to do vulnerability scanning, do you whitelist the pentester so that they can thoroughly scan the machines on the internet, or do not whitelist them ...
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1answer
4k views

WiFi Network Whitelisting?

At school we have a school-wide LAN network. It connects all the wireless devices to the internet. I've gotten the wireless pass code and have successfully connected to the network, yet I can't use ...
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1answer
4k views

How to handle a remote office and a client requiring IP Whitelisting?

.NET Developer here, out of my comfort zone on this one. My software company is going remote, where employees can work from home, Starbucks, a Regus office, Spain, anywhere really. One of our ...
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1answer
3k views

Is it safe to whitelist CDN domains?

I am trying to whitelist URLs for my PC but I want to eventually roll out the rules to my small company's firewall. But I'm having trouble with CDNs since a page may load content from many distinct ...
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1k views

How practicable is application whitelisting

I understand that application whitelisting is better and more accurate than black listing. However, my question is, if you whitelist a directory, won't the malware also be able execute in that ...
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1answer
806 views

Whitelist for HTTP request

Malicious request can come in the form of user agent string, referrer or cookie. To prevent being pawned by zero day attacks such as Shellshock, I have created a whitelist of characters for user agent ...
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10k views

Is blocking a country's access to a website a good measure to avoid hackers from that country?

I am located in Venezuela right now, and for the whole weekend have been unable to access grubhub.com and seamless.com. Finally, I tried using the Tor Browser and got access. The same thing happened ...
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1k views

Shellshock plus sudo/su environment whitelist bypass - big problem?

The question is: How big a problem is this? Looks pretty big to me. With the shellshock bug it is possible to bypass the whitelist of known-harmless environment variables in sudo, as well as other ...