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131
votes
3answers
82k views

How does reverse SSH tunneling work?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic. Based on Reversing an ssh connection and SSH Tunneling Made ...
8
votes
3answers
2k views

Linux Bulk/Remote Administration

Beside our internal IT infrastructure, we've got around 500 Linux machines hosting our services for the on-line world. They are grouped in a bunch of clusters like Database A-n, Product A-n, NFS, ...
33
votes
6answers
3k views

Linux equivalent to PowerShell's “one-to-many” remoting

Coming from Windows administration, I want to dig deeper in Linux (Debian). One of my burning questions I could not answer searching the web (didn't find it) is: how can I achieve the so called "one-...
3
votes
2answers
3k views

best practice to backup config files

I want to setup froxlor on not fresh install remote server (Ubuntu 10.04.2). I take care of admin the server since two month. Before I start, the previous guy installed and config some services and ...
-4
votes
2answers
76 views

How do I remotely connect to my iMac from another server? [closed]

I want to ssh my iMac at home from my MacBook when I'm away, but I can't figure out how to ssh when I'm not on the same local network. I have configured my iMac to accept ssh through the "Remote login"...
6
votes
3answers
913 views

Running continuous jobs remotely

I'm new to Linux, and I'm probably asking a fairly basic question. How do I run a continuous program on Linux? Basically, I have a program that will continuously check for content on a website. This ...
4
votes
1answer
456 views

personal document management system

I'm looking for a personal document management system that would: track changes in documents in a configured directory tree save new files to a content repository (thus allowing of their versioning) ...
3
votes
2answers
950 views

remote desktop connection - similar to team viewer

I have a few different Desktop versions of Ubuntus (13.04, 12.04, Kubuntu,..) on different computers. I would like to manage all of them on a single computer via remote connection and be able to use ...
2
votes
5answers
5k views

Execute a command on multiple hosts, but only print command if it is successful?

Here's what I want to do. I want to check over 100 hosts and see if a file exists on that host. If the file does exist, then I want to print the hostname and the output of the command. In this ...
2
votes
2answers
985 views

How to fetch and process mail in order to execute commands?

I administer a home server, and sometimes when I'm out I need to execute some simple commands on the server. 3G + SSH is not an option because it's too expensive from my phone (here in Argentina). It ...
1
vote
1answer
832 views

Remote support: routing RDP over ssh tunnel?

I want to replace TeamViewer with a FOSS solution. I need to support some remote computers. I have a working SSH tunnel set up between two computers using a middleman server like this: Kubuntu_laptop-...