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It is already running on a different port. Seems this attacker has done a portscan before.



This keeps the attacker away but I still have hundreds of log entries of failed log-ins every day,...

Hi,

I experience attacks to my dedicated server for some months. There is some automated script trying to break into the server by brute force. It is connecting to SSH and tries several usernames...

OK, update: fail2ban could massively reduce the hacking attempts, but not completely stop it. So an other question: is there a possibility to limit SSH-access based on the geolocation of the source...

Hi,

fail2ban is a really nice tool and seems to do the job, so thanks for the hint!

No idea why it is not installed by default on Ubuntu Server...

Hi,

during the last few days my SSHD-logfiles are full of entries like this



Disconnected from authenticating user root 137.74.198.18 port 38522 [preauth] : 1 time(s)
Disconnected from...

OK, loadbalancer sounds good but I afraid I do not understand the general concept behind it. In my scenario, where should I run it, on server A or server B? And what happens when that sever dies...

Hi,

I'm currently running a webpage on a dedicated server and now want to implement some as much as possible automatic fallback mechanism. That's what I have:


Domain- and DNS-configuration...

Hi,

I have the weird situation that PHP-scripts that make use of mysqli-functions work in CLI only for root but not for other users. That's what I have:

1. A script containing following code:
...

It is a plain and stupid Xubuntu with Libreoffice, Firefox and a few Games installed. There is not even a custom install repository added.

Only thing worth to mention: I have an other problem with...

Hi, I have a strange problem with myXUbuntu/XFCE desktop. There the (system) symbols for trashcan, home directory and file system exist two times! Yes, two times the same icon, name, function and...

Hi,

after connecting a new display to my computer, the screen resolution does not fit any more (as it still has a VGA-connector, it is not detected automatically). So this is not a problem, I...

This is exactly the problem I described in my post. Now the question is: how can I fix this without completely repartitioning/reinstalling the whole server?

Hi,

I have a server running which started with Ubuntu 10.08. Over the years it was updated to Ubuntu Bionic and was equipped with a RAID-system. This now causes some problems. To make it short: I...

Hi,

for some time I sign my .DEB-packages with

sudo dpkg-sig --sign builder mypackage.deb

This seems to be successful, after signing the .DEB package is larger. Now I have a server where...

Hi,

I have a strange problem with one Ubuntu-system in my network. As well as some other Linux-boxes it is located in an internal network in IP range 192.168.1.x with full access to all other...

For my scanner I found following solution: it works well but the orientation of the sliders are wrong - so when you configure it to produce lighter results, they become even darker. Means you have to...

Hi,

I would like to see the process control / HMI software from https://sourceforge.net/projects/oapc/?source=directory included in the standard Ubuntu distribution. Unfortunately I'm neither the...

Finally I found the reason: it is a bug related to SimpleScan. When brightness is turned up in this program, the scans become darker (so this parameter works in the wrong direction). To make the...

Hi,

I think about using a (somewhat) realtime application on a SoC with Ubuntu operating system. I know, typically a realtime Linux is needed for
such a task. But: Since this hardware has really...

Hi,

I have installed some friends an Ubuntu 15 system for their desktop computer. These are normal home-computers which are behind a WLAN-Router with integrated firewall. Their IP is dynamic,...

Hi,

I try to get a CanoScan Lide 120 working with some very different results:



Ubuntu 14 and the sane-drivers that are available via ppa:rolfbensch/sane-git (as described at...

Hi,

I'm planning to install a SIP-server on my Ubuntu 12.04 LTS which also supports TLS/encryption. I already tried Asterisk but it's configuration is a mess, dozens of huge and strange...

Hi,

my Ubuntu 12.04 LTS often shows me this in logwatch:



--------------------- Postfix Begin ------------------------

1 Miscellaneous warnings

Your serch criteria and the results in no way fit to my question - you would have see nthat when reading it. So thanks for nothing!

Hi,

I need to configure a Ubuntu system in a way where _one_ special user has only limited access possibilities.

Means as soon as this user is logged in exactly one full screen application is...