Here is command output from imap SSL certificate which got …

Friday, 29th March 2024

Comment on How to check if newly installed SSL certificate for IMAP and IMAPS is properly installed by admin.

Here is command output from imap SSL certificate which got expired:

SSL handshake has read 946 bytes and written 319 bytes

New, TLSv1/SSLv3, Cipher is AES256-SHA
Server public key is 1024 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : TLSv1
Cipher : AES256-SHA
Session-ID: CF8CB9420D728AACB8C02D5A5D3B42D11F2D47D830AD0C414E4BF11723175040
Session-ID-ctx:
Master-Key: ADFB2BAAAF229CAE16BBC280B88C6C62CAB234775D54E88C91746D8650D69249ADE7A8B6D014F92334AA5D83A750929A
Key-Arg : None
Start Time: 1309270899
Timeout : 300 (sec)
Verify return code: 10 (certificate has expired)

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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


Fix eth changing network interface names from new Linux naming scheme ens, eno, em1 to legacy eth0, eth1, eth2 on CentOS Linux

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


How to log every Linux executed command by every running system program to separte log via rsyslog for better server Security and audit trails

In case if by default log is not configured for snoopy,
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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)

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