Linked Questions

0
votes
3answers
4k views

SSH Brute Force Attack; Auto-Ban IP-Addresses [duplicate]

Possible Duplicate: Preventing brute force attacks against ssh? We have approximately 20 internet connected virtual machines, and just noticed that hackers are trying to brute force SSH port 22. ...
0
votes
1answer
222 views

Deal with brute force ftp attack [duplicate]

While Checking the /var/log/secure on my centos server have found lot of attempts of failed login by using unknown usernames, from a list of ip from Japan And China How to hide my server from these ...
20
votes
4answers
13k views

Someone is trying to brute force SSH access to my server [duplicate]

By coincidence I looked at my servers ssh log (/var/log/auth.log) and I noticed that someone is constantly trying to gain access: Sep 7 13:03:45 virt01 sshd[14674]: pam_unix(sshd:auth): ...
22
votes
5answers
64k views

How to stop/prevent SSH bruteforce [closed]

I'm very new to network administration, so please regard that I'm not that experienced yet. I have a Ubuntu root server with plesk panel. Yesterday my friends and I noticed that the quality of ...
14
votes
12answers
4k views

Securing SSH server against bruteforcing

I have a little SVN server, old dell optiplex running debian. I don't have that high demands on my server, because its just a little SVN server... but do want it to be secure. I just renewed my ...
0
votes
2answers
705 views

netstat brought up strange ip

I just ran netstat -vatn and found there was a connection ESTABLISHED on :22 from my ip and another unknown ip. Moments later I ran it again and found the connection was gone. I have a default ...
0
votes
2answers
1k views

Preventing brute force attacks against ssh - on Windows Server?

Same question as this Preventing brute force attacks against ssh? - specifically for Windows Server. Strong passwords, RSA auth, and port knocking all apply to windows - but I'm hoping for something ...
0
votes
1answer
1k views

Stop and prevent brute force attacks on Ubuntu 14.04

I've currently 3 servers with SSH service being attacked by brute force. The attack is from multiple sources or one who's changing his IP with each attempt performed. I need help to stop current ...
0
votes
1answer
263 views

How do I secure my SSH access?

I'm one of those guys who climbs up the ladder to the high dive and jumps off, then realizes he doesn't know how to swim. So I have a VPS, and I have no idea how to administer it. I understand one of ...
0
votes
1answer
81 views

Strange connection on ssh serer

So, one day, I decide to check the ssh server logs. Did so, and found something odd. There were about 3 different ips trying to brute-force guess the root password? What should i do, if anything? PS: ...