Linked Questions

1
vote
3answers
3k views

Secure an Ubuntu OpenSSH server from Brute force attacks but without a firewall or SSH key pair? [duplicate]

I use Ubuntu 16.04 and seek to harden my SSH authentication in a special manner. The current situation: I have a machine with a minimal Ubuntu server I use mainly to transfer files to via its local ...
0
votes
1answer
2k views

Cannot login with two-factor SSH [duplicate]

In response to the users that flagged this as a potential duplicate, it is not. I have a SSH hardening solution, which I got off Canonical's ubuntu tutorials and is commonly repeated, but it isn't ...
0
votes
2answers
64 views

What steps should I take to prevent these apparent hacking attempts? [duplicate]

I'm running an Ubuntu 20.04 server, and when I look at the logs, I constantly see strings of entries like this: Jan 14 23:04:51 dell-server sshd[578861]: Invalid user carlos from 14.232.160.213 port ...
1
vote
0answers
69 views

Secure SSH Server from brute-force? [duplicate]

I'm just a newbie in Linux and recently got a VPS (Ubuntu 14.04 LTS Server). How can I secure its ssh server from brute-force attacks?
0
votes
0answers
23 views

Scared of auth.log file of my ubuntu server [duplicate]

I have a ubuntu server running, just a small project. My auth.log file is 22mb big and it is full of stuff like: Failed password for invalid user milka from **** port **** ssh2 Received disconnect ...
32
votes
2answers
15k views

Disable password access through SSH?

I'm setting up a server for backing up my desktop box remotely. I want to prevent remote password access to the server, permitting only users with private keys (AKA my desktop box) to access it. How ...
22
votes
5answers
19k views

crond64/tsm virus in Ubuntu

Recently I noticed my home server to get painfully slow. All the resources were eaten up by two processes: crond64 and tsm. Even though I repeatedly killed them, they kept showing up again and again. ...
12
votes
5answers
13k views

Is someone trying to hack into my server? What can I do?

A few weeks ago I posted a question here about some ssh issues I was having with an Ubuntu 12.04 box. Fast forward to today and I am trying to allow someone else access to the machine, but they keep ...
4
votes
6answers
4k views

who is trying to brute-force my password?

I was looking into my log files on my server and I found the following lines in: /var/log/.auth.log.1: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruse r= rhost=...
2
votes
3answers
43k views

Ubuntu Server 12.04 remote desktop access

I have an Ubuntu 12.04 server at home with GUI running. It does many things, like Apache virtual hosts (several WordPress sites hosted for me and my mates), Samba server, Mini DLNA server and some ...
4
votes
1answer
7k views

Tens of thousands of failed/denied SSH login attempts [closed]

Recently a few friends and I came up with an idea for an app. To facilitate the creation of it, we set up LAMP on an Ubuntu Server 12.04. This box is running from my home. We've set up 3 user accounts....
6
votes
1answer
2k views

How to permanently mount a remote share?

I've got an NAS file server on my local network, in my windows days I just mapped a drive to it and it was just there all the time. I'm having trouble doing the same in Ubuntu. I had done this ...
1
vote
2answers
935 views

connecting and copying files with scp — ubuntu 10.04

I have a work computer. I have a home computer. I want to be able to share files between with scp, both our computers are behind routers, which assign a local ip. 198.168.0.* As well as knowing their ...
4
votes
1answer
455 views

How to stop SSH filesystem from discarding root permissions after every command?

i have a small bash script that mounts my sshfs... problem is it ask for the server/host password for every mount... i have four mounts and i have to enter it every time for 4 times and its tiresome,...
0
votes
3answers
306 views

fresh newly rented server, spammed with root login attempts

Hello i've just rented a server at hetzner.de, and decided to follow the toturials at linode for securing my server! i've just completed setting up OSSEC and then right off the bat i get spammed with ...

15 30 50 per page