kandi X-RAY | Bypassing-Web-Application-Firewalls Summary
kandi X-RAY | Bypassing-Web-Application-Firewalls Summary
A series of python scripts for generating weird character combinations for bypassing web application firewalls (WAF) and XSS blockers
Top functions reviewed by kandi - BETA
Bypassing-Web-Application-Firewalls Key Features
Bypassing-Web-Application-Firewalls Examples and Code Snippets
Trending Discussions on Firewall
I've been trying to create a playbook that I can run periodically to go through all my Vyos firewall rules and ensure the "log enabled" command is present, just in case someone forgets to add logging to a firewall rule. I've found the vyos.vyos.vyos_firewall_rules module which I think will be perfect for what I need to do.
The only problem is, is that this module requires you input the rule set name and rule number of each firewall rule that you want to update. However in my case, I want this to be done automatically and Ansible to go through each firewall rule set and associated rules that are present, and ensure logging is enabled on each rule. Something like this is what I need:...
ANSWERAnswered 2022-Apr-11 at 02:35
You can create the dictionary first
I´m experiencing some kind of network issue when connecting to my MariaDB remotely, which is hosted on a CloudSQL instance (nevertheless, I think that this is unrelated).
When I'm trying to connect through
mariadb.exe from my installation of mariaDB:
ANSWERAnswered 2022-Apr-08 at 15:21
Cloud SQL supports MySQL, Postgres, and SQL Server engines, but not MariaDB.
Additionally, you tested
telnet x.y.z.a 5432, but the port for Cloud SQL MySQL instances is 3306. (5432 is the port for Postgres).
You should verify which type of Cloud SQL instance you have created, and that you are using the right cli to connect with it.
hi I'm trying send email , but I just get this error :...
ANSWERAnswered 2022-Mar-18 at 10:39
If you are calling from your application to the gmail server. That would be an outbound rule so you need to add a outbound exception to the firewall.
When I add a wireguard interface via
wg-quick up wg0, wg-quick sets up the following nftable rules. What are these doing and why are they needed?
Here are some example rules for ipv4:...
ANSWERAnswered 2022-Jan-24 at 00:45
The wg-quick script sets up these rules only when you configure the
AllowedIPs of a WireGuard peer to include
/0 -- aka "all addresses" or the "default route" for an address family (
0.0.0.0/0 for IPv4 and
::/0 for IPv6).
Using a tunnel like WireGuard for a default route requires some tricks to work correctly in most scenarios. The main trick wg-quick uses is to put the new default route into a custom routing table, while adding policy routing rules with a firewall mark to overide only the default route of the main table. This is the purpose for the route and policy rules you'll see wg-quick set up in this case:
I have created an Azure Firewall Policy with Premium tier using the following terraform code:...
ANSWERAnswered 2022-Jan-21 at 12:03
Here is what i have:
- GCP instance without external IP (on VPC, and NAT), and it accepts HTTP HTTPS requests
- firewall allows ingress TCP for 0.0.0.0 and also for IAP's IP 184.108.40.206/20 on all ports for all instances
I ssh to the instance via IAP and run the application in the terminal on port 5000 and 0.0.0.0 host and leave the terminal hanging, but when I connect in parallel through cloud shell and ssh to this instance through IAP, and then click on web preview on port 5000, I get "Couldn't connect to a server on port 5000". I have said that it could be a firewall rule blocking IAP, so that's why I gave access to all ports for IAP (for testing)
P.S: the process has been done on a VM with external IP and it got validated ( but without the need to connect to cloud shell to do web preview, I checked the UI with IP:port in the browser )
What did I miss?...
ANSWERAnswered 2022-Jan-19 at 12:17
You may be following the guide on Building Internet Connectivity for private VMs and this part on Configuring IAP tunnels for interacting with instances and the use of TCP Forwarding in IAP. By Tunneling other TCP connections:
"The local port tunnels data traffic from the local machine to the remote machine in an HTTPS stream. IAP then receives the data, applies access controls, and forwards the unwrapped data to the remote port."
You can create an encrypted tunnel to a port of the VM instance by:
I'm getting tripped by my WHM ModSecurity using OWASP3 rules.
I'd like to create a custom rule to the Rules List in Home>Security Center > ModSecurity Tools>Rules List following these exclusions:...
ANSWERAnswered 2022-Jan-14 at 22:51
Core Rule Set Dev on Duty here. As the list of exclusions you gave comes from someone else's blog post it's probably best to ignore them. They disable some key functionality of the Core Rule Set (the 9xxxxx rules you're using is the OWASP Core Rule Set) so it's best not to apply those rule exclusions unless you're certain you know what you're doing and why those exclusions are required.
The three entries from the "HitList" that you quoted: are you certain those are the result of known good traffic? Are those definitely from when you were trying to update a page and you got 403 errors? If you're sure those are genuine false positives (and not attacks) then let's continue…False positive #1
- The rule causing the false positive: 921110
- The location in question: /wp-admin/post.php
- The variable causing the false positive: ARGS:content
Applying a rule exclusion means poking a hole in your WAF's security. We want to try and be as specific as possible so that we make only the smallest hole necessary. We just want to let through the transactions that are being blocked in error and nothing more. We don't want to open a large hole and present an opportunity for attackers to get through.
With that in mind, let's try taking the following approach: let's exclude only the variable in question (ARGS:content) and exclude it only from the rule causing the issue (921110) and only for the location we've seen the problem occur at (/wp-admin/post.php).
Putting all that together looks like so:
ANSWERAnswered 2022-Jan-13 at 03:08
Connection refused means you can initiate a TCP connection but no process is listening on the port, so the connection attempt is refused. This means the firewall is probably not the problem. A firewall problem usually results in a Timeout error.
Edit the postgresql.conf configuration file:
I am able to make work the backend service as an instance group - if i enable the "Allow http access" enabled while creating the members in the instance group.
However i want to disable this and make the network work only from the loadbalancer(external ip). However it is not working. The way I did was to define a firewall rule in the subnet where the instance group is there, such that the destination is the network tags defined for the instance group members
the source is dfined as the ip of the load balancer as a range....
ANSWERAnswered 2022-Jan-11 at 22:55
Where you looking is fine, you can do it. The steps are, as I suggested in my comment a little bit more, I will resume them in this list, and let you the link of a qwiklab, you can check the steps there with the code to do it by yourself.
- Create the instances or instance group with the corresponding healtcheck.
- Configure the Load balancer
- Set the traffic to the new loadbalancer and build the proxy.
- Create HTTPS Load Balancer and send the traffic to the Proxy.
I think that the link is creating instance by instance, but the steps should be the same for an instance group.
I have an App on GCE that needs to have "internet" connection, but I don't want it to be accessible externally, but only by its internal IP (HTTP) by others service (others GCE and Cloud Run instances on serverless VPC).
How can I disable the external without removing the external IP? Thanks...
ANSWERAnswered 2021-Dec-15 at 09:02
There are two implied firewall rules in gcp with lowest priority. You cannot delete these.
- Allow all egress traffic (this will allow your instance to access the internet)
- Deny all ingress traffic (this blocks your instance to be accessible from anywhere)
Solution - You can create a firewall rule to allow ingress traffic only from internal vpc network on TCP port 80.
- Select your instance and click on Edit.
- In Networking column, remove http-server and https-server tags if present and add your own tag e.g "my-app" and save. We will allow http traffic in our own firewall rule.
- Go to VPC network. Select Firewall. Create a firewall rule to allow ingress traffic with target tag as "my-app" and source as CIDR IP range of your vpc network or subnet with tcp port 80. This rule will allow only internal HTTP traffic only from vpc network.
No vulnerabilities reported
You can use Bypassing-Web-Application-Firewalls like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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