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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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Whitelist at network level, application level, or both?

I have a public-facing SFTP instance. When applying the whitelist/allow-list of IP addresses that are allowed to connect to this instance, should I enforce the list on the network/firewall level, the ...
PorLosTacos's user avatar
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1 answer
306 views

Bypass IP Whitelist Restrictions

I have an internal application that only allow whitelisted IP address to consume the API. I have tried: X-Forwarded-For, X-Originating-IP etc. in the headers. None of them work. However, with header ...
LieberHunter's user avatar
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Is it possible to make whitelisted software do custom, malicious things?

Let's say there's a keylogger secretly installed in an employee's computer. The keylogger recorded a bunch of information, but the well-configured firewall blocked the keylogger from sending that ...
No Name's user avatar
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SQL injection using “True” or “Null”

In a discussion about sql injections, a claim was made that the actress Rachel True has computer problems due to her last name, including not being able to get an iCloud account, and not being able to ...
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Does a database with pre-calculated SHA256 values exist for Windows EXEs?

Background: At my place of work, we're trying to block all unapproved browsers on all Windows machines and the IT Security guys did a search on our internal infrastructure and came up with a list of ...
Fabby's user avatar
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Query on best practice - using 2FA to self-authorise IP addresses in an allow-list

I want to know whether a solution I'm considering for a web app is particularly secure / in line with best practices etc. Scenario - a web application, it's a stock management app for small retailers. ...
clumsybiker's user avatar
2 votes
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What is the most efficient way to get new executables whitelisted by Norton? [closed]

We developed an application (see https://embeetle.com). To avoid false positives, all our executables and DLLs are code-signed with an Extended Verification Code Signing Certificate from Sectigo. ...
K.Mulier's user avatar
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How to get my exploit script served on arbitrary subdomain?

Sometimes when checking whether requests are cross-origin, applications check whether the origin contains the whitelisted domain. This makes it possible to bypass the white-listing by including the ...
Sjoerd's user avatar
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Is an IP based whitelist practical for controlling internet use?

I have to set up internet controls for our schools study hall/testing center. The idea is that computers on that network should only be able to access the school's webportal and learning platform ...
Frank's user avatar
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Restrict web access with whitelists

Can I secure a website using a simple whitelist system? My idea is to port forward a website www.example.com on my pc. To secure it, I want to add a whitelist system. It will work like this: When the ...
Gies's user avatar
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7 votes
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Is it safe to allow CSS filter: url(data:<SVG SOURCE HERE>)?

We have a web service where logged in users can create web page content and write custom CSS for their pages. All the HTML goes through a whitelist parser and doesn't allow any executable content. All ...
Mikko Rantalainen's user avatar
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Whitelisting our app to prevent connection blocking?

We publish a Windows desktop app, and while I've run VirusTotal on all of our files with no hits, some security software blocks incoming connections on ports we use, leading to frequent user support ...
Scott Smith's user avatar
3 votes
2 answers
3k views

Risks associated with IP whitelisting

I was told that IP whitelisting should not be considered safe and are hence obsolete. I fail to understand why this statement holds: can IPs be impersonated? if not, then why is it a bad/obsolete way ...
John's user avatar
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4 answers
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HTTP access from a single IP [closed]

If I were to configure a server that would be configured to only be accessible (HTTP) from a single IP address via a port, is it safe from unauthorized access?
Gundam Gundam's user avatar
1 vote
1 answer
343 views

Modsecurity CRS how to deal with field arrays

I have a question how to deal with whitelisting field arrays in modsecurity. Currently am doing the following: ... ctl:ruleRemoveTargetById=942510;ARGS:_owc_pdc_faq_group[0][pdc_faq_answer]" ... ...
Eddie4's user avatar
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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 ...
Simon's user avatar
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1 answer
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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 ...
SCO's user avatar
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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%[email protected]/admin/delete?username=carlos A ...
Kevin1923851823's user avatar
1 vote
2 answers
1k 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 ...
John Halstead's user avatar
2 votes
1 answer
3k 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': ...
balia's user avatar
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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" (...
Darren's user avatar
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2 votes
4 answers
3k 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 ...
Jacob Horbulyk's user avatar
2 votes
2 answers
2k 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 ...
codependent's user avatar
1 vote
1 answer
263 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 ...
ellaaaa25's user avatar
1 vote
2 answers
1k 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 ...
Ivana's user avatar
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2 votes
1 answer
292 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 ...
jonathan_whitelist's user avatar
6 votes
2 answers
3k 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 ...
1234y's user avatar
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2 votes
0 answers
1k views

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

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 ...
user2284570's user avatar
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120 views

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 ...
Ivana's user avatar
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0 votes
1 answer
122 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 ...
user avatar
1 vote
1 answer
149 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 ...
wonder's user avatar
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1 vote
1 answer
741 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 ...
NagyDani's user avatar
5 votes
1 answer
253 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 ...
Free Radical's user avatar
6 votes
2 answers
2k 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) ...
QuantumNoisemaker's user avatar
0 votes
2 answers
544 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 ...
zeitsern's user avatar
1 vote
2 answers
344 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 ...
Vitaliy's user avatar
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1 vote
1 answer
2k 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 ...
Fei's user avatar
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4 votes
1 answer
5k 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 ...
IguyKing's user avatar
0 votes
1 answer
190 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 ...
userJoe's user avatar
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1 vote
3 answers
248 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 ...
MrG's user avatar
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1 vote
2 answers
5k 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 ...
user avatar
0 votes
4 answers
341 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 ...
Forivin's user avatar
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2 votes
2 answers
2k 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 ...
user128766's user avatar
3 votes
1 answer
1k 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 ...
XaolingBao's user avatar
3 votes
2 answers
8k 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 ...
OJay's user avatar
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1 vote
3 answers
1k 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 ...
Bob Ortiz's user avatar
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1 vote
2 answers
4k 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 ...
Lutefisk's user avatar
  • 392
3 votes
1 answer
677 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. ...
mostlyinformed's user avatar
-2 votes
1 answer
296 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 ...
Dupontrocks11's user avatar
2 votes
1 answer
150 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 ...
jpmc26's user avatar
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