I'm looking for an example of an FTP server running on Linux platform.
I know that there is an application on windows tftpd32 which combines multiple servers such as TFTP DHCP and DNS.
I then asked the following question:
Is it always the case for any product offering TFTP server? In other words,is it always possible to find DNS and DHCP servers in the same TFTP server.
sorry for my English and thanks in advance.
No, TFTP servers are independent. If they come with DHCP, that's because TFTP is mostly useful for one purpose - PXE bootstraping. So if you need a server to bootstrap your VMs - try PyPXE. Works on Linux.
Related
I currently have the following network setup and would like to be able to make WebRTC calls between the two clients in different networks.
I enabled IPv4 forwarding on the openSuse Leap 15.2 server and both devices have either 192.168.2.1 or 192.168.4.1 as their default gateway. The web application as well as the signaling service are both hosted on this server as well.
With the Firewall disabled the call works as suspected, but with the Firewall on the call no longer works. I thought about hosting a Coturn STUN/TURN server on this server, as I've read that you should provision one, if you run into troubles with a firewall.
Is a setup like this doable with lets say Coturn and what would the configuration look like for a scenario like this?
I ended up solving it as I describe in my GitHub issue for this matter.
So, we all use TeamViewer for accessing GUI based (Windows / Linux) remotely and of course, it works really well.
Any ideas of how to do the same with headless (Ubuntu) servers? I'm thinking that the headless servers would run some sort of service that connects to a central server, which I can then remote into (somehow) and then route through the central server to the remote server.
It's kinda like the server based TightVNC that was popular a view years ago, where you could host the "server" module and have all your TightVNC clients connect to that server, whilst you do the same on your client, and the server module provides a gateway through to the remote systems. Just like TeamViewer really.
I wonder if the remote servers can connect to the (central) gateway server via SSH, I would do the same (again via SSH) but then the gateway server will provide me a "tunnel" through to the remote server.
I would of course prefer to have the remote servers have SSH ports opened through their firewall and then connect to them directly, but sometimes their IT teams don't like that. Having a server that runs a service, connects to a public server, means that the IT team will typically permit this, as the traffic is initiated internally and would be even more so agreeable to permitting it if that traffic uses an encrypted protocol.
Anyway - I just wondered if there was something out there that I could have a look at and see if it would work??
If you don't want a cloud controlled service (with serious security issues as of late), then check out the self-hostable MeshCentral project. It creates outbound tunnels that allow devices to communicate behind NAT and other networks.
Good news! Teamviewer 11 supports headless Linux servers :)
https://www.teamviewer.com/en/help/1111-How-do-I-install-TeamViewer-on-a-Linux-system-with-no-graphical-user-interface
Try https://www.dwservice.net/en/
Works on RPI, Linux and Windows.Best Part is free and Support for Terminal access
not just GUI ( so works faster in slower internet ) .
Client side- > just run the script ( not need of GUI)
Remote side - > Run just browser.
I have a cluster of computers and I am using one of them as a kickstart server.
I configured DHCP/TFTP/FTP on it and it worked fine. When you boot any box in the cluster and choose to boot from network, it will reach out to that kickstart server, lease an IP, install OS..etc. However, using one box dedicated for kickstart is such a waste of resource and I am wondering is it possible to use some level of virtualization to achieve that, so you end up with a image that is a fully functional ks server and can be running on any box with the virtuallization tool set up?
I have used VirtualBox, Vagrant and Docker before but I am not sure will these tools be powerful enought to do it? Can anyone give some directional guidance or resource to help me get started.
Just virtualize the kickstart server;
Use the virtual environment DHCP Server facility and set the Kickstart Server DHCP module as "proxyDHCP"
When a PXE client boots up will get its IP from the virtual environment DHCP Server and the PXE booting information from the instance of the kickstart proxyDHCP server.
Next the PXE client will know where the TFTP and the rest of the kickstart facilities are located and will continue the boot/install.
Yep I always run kickstart on a VM, A good way to do things is have a bunch of VM's and share them across hosts. Pretty much every site I build out I have the following VM's
Build: running Kickstart/Cobbler, DHCP, TFTP
Provision: running Puppet or Chef
Monitoring: Zenoss or Nagios
The VM's disks all live on iscsi and create the VM's with libvirt KVM. Everything can easily live on one server. I usually have a second server that is prepared for the VM's and if there is ever an outage I just bring them up on the second server.
I'd like to use a server between two machines (with no static IP). The only IP known to me is the server's IP address. I'd like to build/use a system that listens to 2 different ports within the server and whatever is received from localhost:portA is sent to localhost:portB and vise versa. Consequently, both machines (with java apps) can communicate through the server in the middle.
Please what is the best solution to do this. I'm working on linux system and I thought of using an SSH java API (hudson / ganymed-ssh-2) to build a port forwarding server application.
Some issue:
1) determining the size of the data transmitted to buffer read or not to forward it to the other port.
2)The speed of reading/writing bytes.
If you can use ssh protocol you can tunnel local or remote ports (this need support on server side). You can also think about an OpenSSH VPN (take a look on ssh -w option, this will create a real VPN (TUN/TAP device is required). ).
You can use the the ssh program. Take a look at the -L and -R options specifically.
I used nmap to check which ports are open on my server it showed
PORT STATE SERVICE
9090/tcp open zeus-admin
now port 9090 is supposed to listen for apache tomcat. What is this zeus-admin ?
how I start my apache tomcat server ?
It is also the default listed name when nmap'ing it. The actual service listening to that port doesn't have to be, it's what is usually the default service running at that port.
Zeus Web Server is a proprietary web server for Unix and Unix-like platforms.
ZWS seems to be dead since it hasn't been updated since January 2010, and the company no longer offers a similar server solution.
It's probably fine to just kill it, and remove it from operation as it's mostly just a security risk by now.
Zeus is sometimes used as an embedded web server for things like admin consoles. If you have the OpenFire XMPP server installed, you will find the configuration UI tools running on port 9090 (http://localhost:9090).