Comment on Maximal protection against SSH attacks. If your server has to stay with open SSH (Secure Shell) port open to the world by admin.
Hi Matt,
Reason is fail2ban could cause you sometimes troubles in case of DoS, where simply filtering the main IPs might work and the article’s goal is to show
the principle fail2ban makes it.
I’ve seen servers where when fail2ban is enabled causes big troubles especially if it is enabled for some non SSH protocol, so if you can do it without fail2ban in my opionion its better.
But yeah you’re right sometimes you just need fail2ban.
Regards,
Georgi
admin Also Commented
Maximal protection against SSH attacks. If your server has to stay with open SSH (Secure Shell) port open to the world
What kernel and Linux distro / version?
Maximal protection against SSH attacks. If your server has to stay with open SSH (Secure Shell) port open to the world
No I don’t know this one, but it looks something similar to fail2ban. If you try it and have experience with it I’ll be glad to know about it.
Thx!
see ya around
Recent Comments by admin
Install and configure rkhunter for improved security on a PCI DSS Linux / BSD servers with no access to Internet
–rwo, –report-warnings-only
This option causes only warning messages to be displayed. This can be useful when rkhunter is run via cron. Other options may
be used to force other items of information to be displayed.
–sk, –skip-keypress
When the –check command option is used, after certain sections of tests, the user will be prompted to press the return key
in order to continue. This option disables that feature, and rkhunter will run until all the tests have completed.
Install and configure rkhunter for improved security on a PCI DSS Linux / BSD servers with no access to Internet
As rkhunter check, can be pretty annoying and ask you to press keypresses multiple times and spit you a lot of unnecessery data a very good useful option arguments are:
–rwo and –sk
# rkhunter -c –rwo –sk
Warning: The SSH and rkhunter configuration options should be the same:
SSH configuration option 'PermitRootLogin': yes
Rkhunter configuration option 'ALLOW_SSH_ROOT_USER': no
Sorry for really late reply.
perhaps you have to create it or rename the ifcfg-eno1 to ifcfg-eth1 or you have some old ifcfg-enp1s0f0 or ifcfg-eno still under /etc/sysconfig/network-scripts/ interfering
How to RPM update Hypervisors and Virtual Machines running Haproxy High Availability cluster on KVM, Virtuozzo without a downtime on RHEL / CentOS Linux
if you happen to be missing versionlock plugin and you need to get use of it
yum versionlock capabilities
You will have to install yum-utils package:
For example on CentOS 8 Linux, to enable the yum versionlock plugiun
yum install yum-utils.noarch
In case if by default log is not configured for snoopy,
these are default output locations on various Linux distributions:
Distribution | Snoopy output location | Notes |
---|---|---|
CentOS |
/var/log/secure
|
|
Debian |
/var/log/auth.log
|
|
Ubuntu |
/var/log/auth.log
|
|
(others) |
/var/log/messages
|
(potentially, could be elsewhere) |