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Questions tagged [firewalld]

Questions regarding firewalld a firewall service daemon

Firewalld is a service daemon with D-Bus interface

Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces.

Site: http://www.firewalld.org/

140 questions
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Block Docker container ports with iptables/firewalld

I have an docker-compose deployment with a container, e.g.: version: "3" services: web: image: nginx ports: - "8080:80" Docker version is 20.10.9, OS is CentOS 7. I need to block access to 8080 port from external IP addresses except…
Timur
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Unable to access Eureka dashboard inside a docker container

I am setting up a docker container test environment of a Spring Cloud Config Server and Eureka Discovery Service to a server running Oracle Linux 8. Before anything else, I added the following port from firewalld to allow inbound (reloaded and…
Rye
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Firewalld And Container Published Ports

On a KVM guest of my RHEL8 host, whose KVM guest is running CentOS7, I was expecting firewalld to by default block outside access to an ephemeral port published to by a Docker Container running nginx. To my surprise the access ISN'T blocked. Again,…
Howard Sherman
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Firewalld is not running

When I try to add a port to FirewallsD, I get the following exception: centos 7 answer FirewallD is not running When I try to reload with sudo firewall-cmd --reload centos 7 answers FirewallD is not running when I try to start with sudo…
Amin Baghiyat
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The task includes an option with an undefined variable

I have the below vars file and Ansible task which allows some ports for a specific source IPs on the firewall. But for some reason, whenever I run the task I got this error: FAILED! => {"msg": "The task includes an option with an undefined…
3amer_92
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Converting IPTables rules to Firewalld

I'm working on setting up Cuckoo Sandbox and I have several IPTables rules that need to be converted to Firewalld rules. Here's the reference page for the Cuckoo Sandbox install guide:…
Maumee River
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Block Firewall IP and UDP Port not effected on Centos 7

I have blocked all these method in my firewalld public zone but yet any of these not work. I wanted to block a UDP port on Cenots 7. these are the rules i tried, also public zone is my only active zone. firewall-cmd --permanent --zone=public…
Praneeth Perera
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How can i block all ssh connections except the ones from a specific source in firewalld and also log the denied ssh connections

How can i block all ssh connections except ones from 192.168.1.1 in firewalld and at the same time log the the refused ssh connections? I tried: firewall-cmd --permanent --set-default-zone=drop firewall-cmd --permanent --add-source=192.168.1.1…
Khashi A
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How to open firewall port with ansible firewalld task on Centos 7

I have a task in my ansible-playbook script to open TCP port on a remote machine. but when I run my ansible playbook it throws an error. But when i run "firewall-cmd --permanent --zone=public --add-port=1234/tcp" and "firewalld-cmd --reload" I can…
syodage
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how to instruct saltstack to reload firewalld?

I'm trying to configure firewalld via saltstack state file (on Centos7). I can add services just fine to permanent configuration, but that indeed goes into 'permanent' configuration, not in the running one. So, either a reload is needed or (less…
SWTM
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modify centos firewalld zone file with augeas loses indentation

I'm trying to modify a centos firewalld zone file using augeas and the xml lens. The default public zone file looks like: Public For use in public areas. You do not trust…
SimonH
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Validate firewalld config with ansible

I'm using ansible to configure firewalld. The lineinfile module has a validate parameter, which I'd like to use to validate my config. I tried this: - name: config firewalld become: true ansible.builtin.lineinfile: path:…
lonix
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Is it possible to use FirewallD (for CentOS 7) along with Googles VPC Firewall for Compute Instances?

Has anyone tried or know if it is possible to also setup FirewallD for CentOS 7 when Google provides a default VPC Firewall for Compute Instances/VM's? Or would this cause problems? The reason I ask is it is much easier to manage IP blocking via a…
sidgrafix
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expose server running on docker as service on the host

I am trying to get my head around networking with docker. First I create a docker image (based on ubuntu22) with net cat installed: FROM ubuntu:22.04 RUN apt-get update -y && apt-get upgrade -y RUN apt-get install -y netcat-openbsd Build…
Bruce Adams
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Unit firewalld.service is masked

When I want to start the firewalld service, I got this error [root@servera ~]# systemctl start firewalld Failed to start firewalld.service: Unit firewalld.service is masked. and I searched in the web and got a solution that run systemctl unmask…
Shawn Wong
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