Restart Iptables Ubuntu 18
This step by step tutorial explains how to install Oracle VirtualBox on Ubuntu 18. Installing VirtualBox on Ubuntu Server LTS I decided to install VirtualBox on Ubuntu server so I can use it later with Cuckoo Sandbox for malware analysis. In this guide, we'll show you some helpful commands for using iptables to secure your Ubuntu server. 04 でルータつくる. A base Cent OS 6 install (at least 6. 10 using a cloud provider that supports Ubuntu 18. The Stunnel program is designed to work as an SSL encryption wrapper between remote client and server. IPTables is an application program that allows to set up, maintain, and inspect the tables of IP packet filter rules provided by the Linux kernel. Save iptables rules over reboots on Ubuntu 16 and Ubuntu 18 - persistent iptables rules Moving towards the firewalld software and especially the systemd some good old init scripts got missing! For example, one of those good scripts is the init script for iptables firewall, which allows saving iptables rules and during boot, it loads them again. This tutorial shows the steps to install an Ubuntu 18. 2, then creation of the Ubuntu 18. Add a rule that tells the iptables firewall to block ping in and out of a server by controlling the ICMP requests. Most upgrades will go smoothly, but you want to be prepared just in case. Ideal for DigitalOcean Droplets, AWS and other virtual hosts. Our mission is to put the power of computing and digital making into the hands of people all over the world. The ipchains service is not included in Red Hat Enterprise Linux. Although iptables is not a traditional service, but we can interact with it like we would other services. d/vpxa restart. Also, Rich Turner and Russ Alexander recorded a Build 2016 session introducing and demonstrating Bash running on Ubuntu on Windows. Note that you may already have SSH installed on your Ubuntu, so just try logging into your server or run this command to check if SSH is currently running: ps -aux. 4 kernel may use ipchains or iptables but not both. Read this post to learn how to Configure Postfix Mail Forward. 04 LTS on Lionde. Part of the update-manager-core package, it does. However, if you choose to install by directly downloading the. Click on the + icon and choose "VPN" as the interface. v4 and ip6tables-save >/etc/iptables/rules. x systems, restart httpd service using the. 4, “iptables Match Options” and Section 18. Step-By-Step Configuration of NAT with iptables. Manual port forwarding. sudo /etc/init. Your web servers are now being load balanced, in a round-robin fashion, by HAProxy. Docker Engine - Community users should go to Get Docker Engine - Community for Ubuntu instead of this topic. slavov SSH, or Secure Shell, is a protocol used to securely log onto remote systems. service pptpd restart Congratulations, you now have a PPTP server! Using the VPN Mac OS X. Add a rule that tells the iptables firewall to block ping in and out of a server by controlling the ICMP requests. More than 1 year has passed since last update. Ubuntu: Iptables reload/restart on Ubuntu 18. iptablesのリストア機能を使い、PC起動時に読み込ませる。 前者のシェルスクリプトを読み込ませる場合、iptablesのコマンドを1行づつ実行し設定を適用するが、後者のiptablesのリストア機能を使う場合はトランザクション単位で処理を実行する。. I had thought that it was doing it before. How do I set up an OpenVPN Server on Ubuntu Linux version 18. 04 and CentOS-7, 6 using systemctl and chkconfig Linux commands. CRIU is also using a workaround to enable the iptables restore of containers with enabled user. Here is a little helper if your Webmin does not respond. How to Set up an FTP Server in Ubuntu Linux. 04 LTS Set Up OpenVPN Server In 5 Minutes, How do I set up an OpenVPN Server on Ubuntu Linux version 18. Start by right-clicking the folder you want to share, and select Share Folder. The actual iptables rules are created and customized on the command line with the command iptables for IPv4 and ip6tables for IPv6. 1 Cinnamon and Ubuntu 16. Testing the setup. Install OpenVPN Server Ubuntu. htaccess file we can deny or allow access from a specific ip address or range of ip addresses. Paste the above rulesets into their respective files. When Hackers try to hack in to any machine first thing they will do is a basic ping test. We will also explain some more service management systemctl commands that will help you further while working with services. 04 server By default the Ubuntu 14. So follow thus step by step my instruction for setup Zabbix agent. Just flash an usb drive with it as follow. $ sudo iptables -t nat -A POSTROUTING -s 10. x to Ubuntu 18. The iptables firewall is a great way to secure your Linux server. Restarting the Iptables Firewall $ sudo systemctl restart iptables. However, if you choose to install by directly downloading the. We’ll use a script that eases the deployment of IPSec VPN server with L2TP and Cisco IPsec on Ubuntu / CentOS / Debian Linux distributions. The commands and procedures mentioned in this article have been run on an Ubuntu 18. To re-enable the IPS, you have to set up the NFQUEUE via iptables again as shown previously. How do I upgrade Ubuntu 16. 04 LTS servers. This guide shows howto install Apache HTTP Server (httpd) with PHP 7. Prerequisites. A firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules. Most of the time you don't need to worry about using a host-level firewall such as iptables when running Amazon EC2, because Amazon allows you to run instances inside a "security group", which is effectively a firewall policy that you use to specify which connections from the outside world should be allowed to reach the instance. Following is an customized script to install DMASOFTLAB Radius Manager ver 4. There are, however, methods to reset the rules. While iptables is a solid and flexible tool, it can be difficult for beginners to learn how to use it to properly configure a firewall. The Perfect Server - Ubuntu 18. Once you logged in, Webmin may redirect you to its dashboard where you can get basic information about your system. service Failed to issue method call: Unit iptables. While I will give some very basic example configurations below, it is recommended that any person looking into hardening their Ubuntu OS do research into IpTables. To report errors in this documentation, file a bug. How do I start Iptables firewall under RHEL / Red Hat / CentOS / Fedora Linux from a shell prompt? How do I stop firewall? How do I start or restart firewall on a bash shell? First, you need to configure firewall rules by editing a text file located at /etc/sysconfig/iptables on RHEL/CentOS/Fedora. In this guide, I’ll show you the basic usage of Firewalld on Ubuntu 18. [[email protected] enyamador]# systemctl restart iptables. 04 / Debian 9. Ubuntu stop iptables service command. 04 in its main repository. 04 Posted August 20, How to Benchmark the Performance of a Redis Server on Ubuntu 18. Saving and Restoring IPTables Rules Changes to iptables are transitory; if the system is rebooted or if the iptables service is restarted, the rules are automatically flushed and reset. The save will keep your iptables for reboot, and you must restart the service so the new rules are recognized. Use this section to enable Apache 2. In this tutorial, we will show you how to set up and install ISPConfig 3 on a VPS running Ubuntu 18. Ubuntu includes its own firewall, known as ufw - short for "uncomplicated firewall. Synopsis: NetworkManager bad. Combination of Ubuntu 16/18, Docker and UFW poses a bit of a security issue. Open port 465 in firewall On RHEL/CentOS. Is there a way to show the network interfaces via iptables -L in Ubuntu 12. 04 - Login to Webmin. How to Disable IPv6 in Ubuntu Server 18. A VPS running Ubuntu 16. Just flash an usb drive with it as follow. An Ubuntu 14. This guide will walk you through the steps for setting up a firewall using iptables in Ubuntu 16. Whether you want to deploy an OpenStack cloud, a Kubernetes cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available. Ubuntu reload / restart iptables service command. HYEONG HWAN, MUN / 10월 18, 2014 / 미분류 / 1 comments. When Hackers try to hack in to any machine first thing they will do is a basic ping test. # Install Docker from Ubuntu's repositories: apt-get update apt-get install -y docker. Your iptables should now look like this:. How to Restart Network in Ubuntu Server 16. In this tutorial you will learn: What is UFW and its Overview. 1 Cinnamon and Ubuntu 16. Although you can adapt this guide for many Ubuntu versions I suggest you to stick with Ubuntu 18. Here is a little helper if your Webmin does not respond. 5, “Target Options”. How to Resize Partitions with the Ubuntu or GParted Live CD 1,270. Setup IPSec VPN server with L2TP and Cisco IPsec on Ubuntu / CentOS / Debian. This guide is also applicable to our Ubuntu 12. Persistent Iptables Rules in Ubuntu 16. Imagine the scenario in which you want to ssh backup your server to another (VirtualMin) server. Server in Ubuntu 18 While after. The following example is similar to the configuration I run on my personal Ubuntu notebook and home Ubuntu servers. Now, you can directly access your Ubuntu server via the desktop version of Ubuntu, straight from your Terminal. A DHCP Server assigns IP addresses to client computers. Creating an Ubuntu 18. 04 LTS Written by Rahul, Updated on September 16, 2019. Configuring IP address is one of the mandatory skill that every Linux and Unix administrator should learn. Ubuntu sudo ufw disable sudo iptables -X sudo iptables -t nat -F sudo iptables -t nat -X sudo iptables -t mangle -F sudo iptables -t mangle -X sudo iptables -P INPUT ACCEPT sudo iptables -P FORWARD ACCEPT sudo iptables -P OUTPUT ACCEPT Debian. This package will automatically save the iptables rules to the /etc/iptables/rules and also automatically load during boot. Enable or disable service autostart in Ubuntu-18. BLUE SKY STUDIOS are looking for Linux Administrator to maintain and support the. I wrote this guide to help others with a similar task. Create Virtual Host in Ubuntu Nginx Web Server. 04 should be a giant step forward…. This tutorial shows how to set up network-address-translation (NAT) on a Linux system with iptables rules so that the system can act as a gateway and provide internet access to multiple hosts on a local network using a single public IP address. In this blog we step you through the very basics in setting up a DRBD Pacemaker HA Cluster on Ubuntu 16. By default Fail2ban is available in Ubuntu 16. It comes preinstalled on most Ubuntu distributions, however if you are using a customized Ubuntu version or running inside a container you will most likely have to install it manually. Sharing files and folders across your network from your Ubuntu PC is every bit as easy as sharing files in Windows (arguably, it’s easier). So, we recommend using Ubuntu repository for MariaDB installation on Ubuntu 18. Update:-> you can use this one witch allow push request and better share :D <-Setting Up Downloading and installing. 04 servers for the demonstration. NOTE: This documentation was developed using the "alternative installer" for Ubuntu Server 18. With this session recording you are able to get a better understanding of the attackers tools, tactics and procedures (TTPs). In this article, we will walk through set of commands to reset iptables to default settings. 04 LTS Published by Tyler Woods on January 29, 2017 January 29, 2017 When I spin up a VM in the cloud like Vultr or Digital Ocean, I get root access. 04 LTS server. In this article, we'll focus on how you can restart networking service on Ubuntu 18. How to restart OpenvSwitch 1) Restart OpenvSwitch (19) linux network namespace (19) Libvirt (18) Cloud (17) Horizon Dev Tips (16). Enable or disable service autostart in Ubuntu-18. The iptables and ip6tables commands can be used to instruct Linux to perform functions such as firewalling and network address translation, however the configuration that they create is non-persistent so is lost whenever the machine is rebooted. Synopsis: NetworkManager bad. If the services required to sh. [My Config] Ubuntu 18. Red Hat 7, Ubuntu and other systems using systemd: systemctl stop. How to Upgrade from 16. It is really easy and quick to Configure Postfix Mail Forward and this is why i decided to share it with my readers in case anyone else happens to need it. In order to set up Postfix to work in a public environmnet, you’ll have to configure Postfix with a qualify domain name pointed to your server… ex. 2-dev libgmp3-dev libmysqlclient-dev libboost-system-dev libboost-iostreams-dev libpugixml-dev unzip unrar autoconf pkg-config automake libboost-all-dev libgmp3-dev libxml2-dev liblua5. Create Virtual Host in Ubuntu Nginx Web Server. The Red Hat Customer Portal delivers the knowledge, expertise, and guidance available through your Red Hat subscription. [03:18] i'll try that thanks [03:18] whats the best ftp client for ubuntu that shows transfer speed and all that good jazz ive been usin this crappy gFTp and i hate it [03:18] W00t, its downloading at 220kB/s rather than the 30-60 i was getting from the local (thats so veird) === jordan_ is now known as Jordan_U [03:18] XTeLiS. service apache2 restart Debian | Ubuntu 16/18. Search the icon in the top right corner of Ubuntu and choosing to restart or by using the reset. For stable Ubuntu releases there is a Firebird stable ppa repository from where you can install the stable versions latest LTS and current stable. How to set a static IP in Ubuntu 14. 2 Community Edition on LTS Ubuntu Linux systems. slavov SSH, or Secure Shell, is a protocol used to securely log onto remote systems. mi situación es, tengo una red completamente local, y tengo un servidor en dicha red (ubuntu server 12. Remove the rule that tells the iptables firewall to allow ping in and out of a server by controlling the ICMP requests. SSH (or secure shell) is an encrypted networking tool designed to allow users to log in securely to various different types of computers remotely over a network. Iptables is a great firewall included in the netfilter framework of Linux. Now I try to login. 04 server #uncomment the Lines With # Which u don't need to use #if u going to use this script in remote VPS Test it in local systems before applying it in remote VPS. Cockpit is included in Ubuntu 17. Docker, by default, directly manipulates iptables. The main advantages are it is compatible with most of the mobile devices and it uses less CPU resources. Make sure the three primary are default ACCEPT, and then delete the other table types from the dump file. Karim Buzdar October 18, 2019 October 18, 2019 Debian, Linux, Shell Read more Three ways to Customize the Ubuntu Command Line If you are as fond of running all of your tasks through the Terminal as much as I am, you might have also noticed how boring it sometimes becomes with its black background and white/grey text. 如果mysql启本地使用,可以不用打开3306端口. Ubuntu sudo ufw disable sudo iptables -X sudo iptables -t nat -F sudo iptables -t nat -X sudo iptables -t mangle -F sudo iptables -t mangle -X sudo iptables -P INPUT ACCEPT sudo iptables -P FORWARD ACCEPT sudo iptables -P OUTPUT ACCEPT Debian. 2 Community Edition on LTS Ubuntu Linux systems. This can make up the foundation of many clusters as, at the DRBD level, we can make the filesystem highly available, We are using two Ubuntu 16. 04 from Vultr. In this blog we will do the same thing except with a non-root user. 04 64bit Cloud server with IPTables installed per our IPTables guide. 04 LTS servers. 04 is by using GNOME's GUI interface. 10, Ubuntu 14. I found another interesting thing. Install OpenVPN Server Ubuntu. To manage or configure any service or application, choose the desired one from the left pane. # /etc/init. 04 LTS servers. The iptables package also includes ip6tables, which is used for configuring the IPv6 packet filter. This article will walk you through setting up your Ubuntu Cloud Server. 2 Community Edition on LTS Ubuntu Linux systems. 04 before that I used to use with Centos 7 and Red Hat and I can simply restart with systemctl restart iptables but on Ubuntu it does not work. Trust me, I should know ;) – tarleb Jul 18 '16 at 12:00. 04 and I stumbled on the manpage of systemd-rc-local-generator: "systemd-rc-local-generator is a generator that checks whether /etc/rc. 3 Restart Iptables Firewall:. Ubuntu Server brings economic and technical scalability to your datacentre, public or private. Iptables reload/restart on Ubuntu 18. 04 or higher since PHP7 is included. iRedMail is a free, open source mail server solution that automatically installs and configure all necessary mail server components on your server. 04 and Debian without using extra repositories, unnecessary packages and redundant configuration. The Log File Viewer displays a number of logs by default, including your system log (syslog), package manager log (dpkg. 04 Trusty Tahr. 04 LTS Written by Rahul, Updated on September 16, 2019. At the outset, although the Ubuntu firewall is configured, it is set up to allow all incoming and outgoing traffic on a virtual private server. 10 'Cosmic Cuttlefish' on your laptop or desktop. This brief tutorial shows students and new users how to install Apache2 webserver on Ubuntu 17. In this post,we have written a quick way to take backup and restore the iptables in Linux systems. UFW, or Uncomplicated Firewall, is an interface to iptables that is geared towards simplifying the process of configuring a firewall. Then more specific hardening steps can. $ sudo vi /etc/sysconfig/iptables. Iptables is a firewall, installed by default on all official Ubuntu distributions (Ubuntu, Kubuntu, Xubuntu). This can be done without unmounting drives or requiring a restart. How to Cut, Copy, and Paste in the Terminal in Ubuntu 962. However, if you choose to install by directly downloading the. Password authentication is now disabled, and access restricted to SSH key authentication. 2, then creation of the Ubuntu 18. Ubuntu默认安装是没有开启任何防火墙的，为了服务器的安全，建议大家安装启用防火墙设置，这里推荐使用iptables防火墙. 04 and Debian without using extra repositories, unnecessary packages and redundant configuration. If you have two network interface cards installed in your Ubuntu system, one of which connects you to the Internet and the. 04 LTS Written by Rahul, Updated on September 16, 2019. This basicly is a wifi hotspot that routes all traffic t. 04 or higher since PHP7 is included. In Ubuntu, the default firewall is UFW, short for Uncomplicated FireWall. Apache2 HTTP server is the most popular webserver in used today. iptables-save prints a dump of current iptables rules to stdout. Log in to you Ubuntu machine as a sudo user and update the system to the latest packages:. 10 'Cosmic Cuttlefish. The latest Ubuntu LTS release, Ubuntu 18. The Red Hat Customer Portal delivers the knowledge, expertise, and guidance available through your Red Hat subscription. iptablesの初期設定メモです。 (他の目的で作っていたのですが、断念したので記事再利用) もし差異があれば、以下を実行してIPアドレス設定。 今回はubuntu16. As Adrian pointed out we have two issues here and both are related to iptables. It was just three months ago that we announced Bash on Ubuntu on Windows at Build 2016. The default firewall management on Ubuntu is iptables. 1-0-dev libmysqlclient-dev libssl-dev libsqlite3-dev ack-grep. For more information on specific options which address these aspects of a packet, refer to Section 18. We also encourage you to create a staging environment to test the upgrade from 16. We'll show you, How to Open Ports in Ubuntu and CentOS using IPtables. That should get you to a clean state. zcash-cli z_gettotalbalance 0 ZEC, don’t panic. You may reboot your server and run iptables -L to make sure that your. First determine the free space of the group volume. Production Notes Before deploying MongoDB in a production environment, consider the Production Notes document. GDM and XDMCP configuration for remote graphical Linux desktop access. Bin file in Ubuntu 1,295. 4, “iptables Match Options” and Section 18. Most of the time you don't need to worry about using a host-level firewall such as iptables when running Amazon EC2, because Amazon allows you to run instances inside a "security group", which is effectively a firewall policy that you use to specify which connections from the outside world should be allowed to reach the instance. d/xinetd restart. 04 August 16, 2019 - by mhdr - 1 Comment sudo apt install iptables-persistent netfilter-persistent. Iptables is an administration tool for IPv4 packet filtering and NAT and it is used to set up and manage the tables of IPv4 packet filter rules in the Linux kernel. SNMP comes in 3 versions. This article will walk you through setting up your Ubuntu Cloud Server. To restart docker, /etc/init. 在centOS 7系统中使用service iptables restart命令，发现错. In Ubuntu 18. How to permanently update iptables [closed] up. This tutorial shows the steps to install an Ubuntu 18. Today, we will come to know how we can install and configure arno iptables on Ubuntu 14. 04 LTS using terminal bash shell over ssh based session? Introduction: Ubuntu recommend upgrading a Server Edition installation by using the do-release-upgrade command. This simple tutorial is going to show you how to enable Secure Shell (SSH) service in Ubuntu 14. We will also look at how to manage the Apache service and create virtual hosts for setting up websites. (Ubuntu and Debian) Run the following command: sudo /etc/init. MiniDLNA is server software with the aim of being fully compliant with DLNA/UPnP clients. However, if you choose to install by directly downloading the. 04 Xenial Xerus Aug 07, 2016 Firewall, It may be that a restart of the service is necessary after running these commands. $ sudo /etc/init. Hello, I just installed Openvpn on my PC, client can connect but without access to the internet. A check list and guide of best practices for your new Ubuntu Server 18. First, get your iptables rules set up the way you like them. If you plan to install Incredible PBX 13-13. How to Cut, Copy, and Paste in the Terminal in Ubuntu 962. 04 LTS system. The dpkg-reconfigure causes iptables-persistent to repeat the install procedure - it will prompt for you to save the current rules. 04 (Bionic Beaver) with Apache, PHP, MySQL, PureFTPD, BIND, Postfix, Dovecot and ISPConfig 3. 1) Using Graphic User interface. Proteger el ancho de banda. You can change this hostname later, but Ubuntu doesn’t provide a graphical interface for doing so. $ sudo iptables -F Now the endpoint is reachable while Suricata is not running. I am running squid in ubuntu server. [03:18] i'll try that thanks [03:18] whats the best ftp client for ubuntu that shows transfer speed and all that good jazz ive been usin this crappy gFTp and i hate it [03:18] W00t, its downloading at 220kB/s rather than the 30-60 i was getting from the local (thats so veird) === jordan_ is now known as Jordan_U [03:18] XTeLiS. How do I upgrade Ubuntu 16. When Fail2ban detects an attempted compromise from an IP address, it then blocks the IP address (by adding a new chain to the iptables security system) from gaining entry (or attempting to further attack) the server. Type the following command to unloads firewall and disables firewall on boot: $ sudo ufw disable. It's been no different when it came to making IPTables rules persistent after reboots on Ubuntu 16. If you’d like to learn more, you can watch Kevin Gallo’s keynote announcement and demo of running Bash on Ubuntu on Windows at Build 2016. 4GB RAM, 40GB disk space should be the minimum OpenStreetMap server requirements for displaying a small country map like UK. 04 LTS – How To Configure FireWall/IpTables and Fail2Ban August 24, 2016 August 24, 2016 m. So to restart network service you should use sudo service network-manager restart instead of sudo service networking restart. vgdisplay. In Ubuntu 18. It collects and analyzes data from deployed. Install and configure Apache2 ModSecurity and mod_evasive modules on Ubuntu 12. While iptables is a solid and flexible tool, it can be difficult for beginners to learn how to use it to properly configure a firewall. Although you can adapt this guide for many Ubuntu versions I suggest you to stick with Ubuntu 18. This article explains how to install Apache web server on Ubuntu 18. AppArmor confinement in Ubuntu is application specific with profiles available for specific binaries. How do I upgrade Ubuntu 16. Iptables-persistent is a well-known iptables restore service on Debian/Ubuntu. To report errors in this documentation, file a bug. Fail2ban monitors failed login attempts and subsequently blocks the ip address from further logins. By default Fail2ban is available in Ubuntu 16. 15 & above Template:Note Is very important before continue with this process, take a Snapshot or do a Full Backup of your System. It doesn’t offer all the power of the standard iptables commands, but it’s less complex. It helps the system to perform its duties properly. Open/Close Ports on Ubuntu distributions. If you need to add Linux to your data center, consider giving Ubuntu server a try. We are going to look at some of them that I remember. 2 rewrites and specify a setting for the distributed configuration file,. 04 LTS (trusty), 16. service: Unit not found. We’ll use a script that eases the deployment of IPSec VPN server with L2TP and Cisco IPsec on Ubuntu / CentOS / Debian Linux distributions. Note that you may already have SSH installed on your Ubuntu, so just try logging into your server or run this command to check if SSH is currently running: ps -aux. Debian / Ubuntu. * DROP INPUT by Default * ACCEPT OUTPUT by Default * ACCEPT Established Connection * ACCEPT the Connection from loopback * ACCEPT Ping Connection for 5 times per a minites from internal network(10. Manual port forwarding. GDM and XDMCP configuration for remote graphical Linux desktop access. Restart Samba and open Windows File Explorer to view the shared location on Ubuntu. Make sure to include the comment if a comment exists. 04 to Ubuntu 18. The iptables package also includes ip6tables, which is used for configuring the IPv6 packet filter. Run the following commands to restart the vpxa agent and hostd: /etc/init. service pptpd restart Congratulations, you now have a PPTP server! Using the VPN Mac OS X. Iptables is a firewall, installed by default on all official Ubuntu distributions (Ubuntu, Kubuntu, Xubuntu). Hello, I just installed Openvpn on my PC, client can connect but without access to the internet. This guide shows howto install Apache HTTP Server (httpd) with PHP 7. Version 1, the one we are going to use here is not secured, therefore we are going to make sure that only localhost is going to be able to access it. How to install fail2ban on Ubuntu Server 18. In this article we will explain how to start, stop or restart Iptables and FirewallD services in Linux. Upgrade Ubuntu 16. slavov SSH, or Secure Shell, is a protocol used to securely log onto remote systems. # /etc/init. How to install and setup HAProxy on Ubuntu 16. The latest Ubuntu LTS release, Ubuntu 18. The material in this document is available under a free license, see Legal for details. Hopefully this saves some people some time. As for restarting: iptables is build into the kernel, so there's no way to restart it independently. If you not able to see the apache test page, Disable the firewall ( iptables ) and selinux service on your server. Iptables is the preferred firewall as it supports "state" and can recognize if a network connection has already been "ESTABLISHED" or if the connection is related to the previous connection (required for ftp which makes multiple connections on. One of the ways you can restart networking on Ubuntu 18. We will also look at how to manage the Apache service and create virtual hosts for setting up websites. sudo iptables -A INPUT -i eth0 -p udp -m multiport --dports 1900,5351,5353 -j ACCEPT sudo iptables -A INPUT -i eth0 -p tcp -m multiport --dports 49152 -j ACCEPT sudo netfilter-persistent save. So, we recommend using Ubuntu repository for MariaDB installation on Ubuntu 18. If your edition of Ubuntu does not have this application by default, you can download and install it through Ubuntu Software. service apache2 restart Debian | Ubuntu 16/18.