My preferred method to work with a Raspberry Pi is via SSH. When one installs Raspian from the Raspberry Pi website, SSH is active and available on port 22 (default SSH port number). All one needs is an ethernet connection, a DHCP server and a computer on the network to begin using the Pi.SSH gives one a terminal with command line access. Command line access is fine, but using a mouse and graphics is better.
Webmin will give us a web based interface that does that. One doesn't even need to know the commands for most of the common functions and the interface is pretty intuitive.Note that I am using a Windows computer as the SSH client end. I have no doubt that Linux users can find the Linux solution In the steps that need one. I use Putty for SSH access.To get connected with Putty one needs to know the IP address and port number of the Raspberry Pi. There are a number of ways to discover the Raspberry Pi's address.
If we have access to the DHCP server, we can look at the lease table to find the assigned address. We can't always access the DHCP server and even if we can, it can be complicated. A simple way to find the address is with a port scanner. I use Advanced Port ScannerAs shown in the image, we can set it to scan port 22 at all the addresses in the subnet. If we are not sure of the subnet, there are several ways to find out what it is. In Windows we can go to the network connections and right mouse click on the connection to the subnet (Ethernet or wireless).
Then we can click 'Status' and then the 'Details.' This will show the assigned IP address and the subnet mask. One can also open a command window and use the 'ipconfig' command.Note in the image that we have devices at 192.168.5.73 and 192.168.5.101 that have port 22 open (Note is it easier to look for 'closed: 0'). By trying to connect as shown in the following step we can determine that 192.168.5.73 is the device we want.
Slackware Usb Install
The following link is to the Webmin page showing how to do a Debian install. It is good idea to use this link instead of the commands below.
It will be updated with the latest Webmin. I am not likely to keep this instructable as current as that link.The reason we are using dpkg to install Webmin is that it is not in the repository. Dpkg does not handle dependencies, so it is best to install the needed modules first. Note that apt-get and dpkg needs sudo.One can select and copy each command line and right mouse click in the Putty terminal window to paste it.sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python. For the example Pi we type into the browser.
One would use the IP address for a given Pi in place of the 192.168.5.73. The port will be 10000 on a newly installed Webmin. Note also that https must be used. That is the Webmin default.
One should get various warnings about the self-signed certificate, etc.Congratulations, we have Webmin installed and working. Now for a few tweaks.We will make those tweaks in the 'Webmin Configuration' screen. So we go to the to the Webmin drop down at the top of the Webmin menu and select 'Webmin Configuration'. Putty allows for tunneled connections. These are connections that go through the SSH connection and appear to come from the inside of the Raspberry Pi and the client computer.
The ports being used are not visible on any external interfaces. Using tunneled connections greatly improves security for devices with interfaces directly on the Internet. One can turn off external access to the Webmin port and only accept connections from inside the device through an SSH connection. One can further improve security by changing the SSH port to some obscure port number and setting up port 22 to act like a dummy port that does not allow logins. It can be configured so that it appears to an attacker as a legitimate port and they can be occupied trying to break in there.
One can also use signed key access on the obscure port to make it even more difficult. If an attacker were to discover the second port, it is highly unlikely that they can discover the 256 byte (or greater) key. (how to make these changes should be another instructable).At this point we will just show how to set up the tunnel and to turn off external access to Webmin. We will also drop the SSL, since we get that from the tunnel. Then on the 'Webmin Configuration' screen, we select 'SSL Encryption'. In the next screen, we choose the 'No' button next to 'Enable SSL?' Then click the 'Save' button.
We will have lost our connection. We need to go to the address bar and edit 'to 'and we will get our connection back. Putty has now created a connection that appears on the Raspberry Pi end to originate inside the Pi. It is mapped to a port in the calling computer that also appears inside the computer. This connection is secure and encrypted inside the SSH connection. Now to connect to Webmin we type 'in the address bar of the browser.
We now have a secure connection to our Pi to administer it. There is no access to Webmin through any external port.
From the outside, port 10000 on the Raspberry Pi is closed.
Tomcat Webmin Module InfoApache Tomcat Module for Webmin. Install and Manage Apache Tomcat or Manage Existing Installations. How to install via CDNWebmin-Webmin Configuration-Webmin Modules-From ftp or http URLURL:md5:Go to Servers-Apache Tomcat (you may need to refresh page) How to install from GITArchive module$ git clone$ mv Tomcat-Webmin-Module tomcat$ tar -cvzf tomcat.wbm.gz tomcat/Upload from Webmin-Webmin Configuration-Webmin ModulesGo to Servers-Apache Tomcat (you may need to refresh page) Notes UbuntuTested on Ubuntu 14, 16, and 18 Readhat/Fedora/CentOSTested on CentOS 6x64 and 7x64haveged helps Tomcat start much faster. Yum install epel-releaseyum install havegedchkconfig haveged onDebianTested on Debian 8 and 9 FreeBSDtomcatenv doesn't work, because tomcat service(/usr/local/etc/rc.d/tomcat8) is not sourcing the setenv.sh file. Work around is to set tomcat7javaopts= in service file. ArchInstall tomcat packages manually and then install module, because Webmin doesn't support pacman. Go to Existing Tomcat Installations below.
Pacman -noconfirm -S tomcat8 tomcat-native jre8-openjdkOpenSuSeInstall tomcat packages manually and then install module. Go to Existing Tomcat Installations below.
Zypper -n install tomcat tomcat-webapps tomcat-admin-webappsSlackwareInstall Tomcat using one of our! Existing Tomcat InstallationsThe module can also be installed on existing Tomcat installations. Install from Webmin-Webmin Configuration-Webmin Modules. Go to Servers Apache Tomcat. Click config icon in top left corner. Set the paths to those used on your installationOnce you have updated the /etc/webmin/tomcat/config file to your installation paths, you should be able to use all functionality.
IssuesPlease report issue here or at Screen ShotsTomcat Module:Tomcat Module WAR Manager:Tomcat Module Configuration Editor:Copyright. Copyright AcuGIS, 2019. Copyright Cited, Inc., 2019.