Archive for September 27th, 2019

Bundesgesundheitsminister Jens Spahn (CDU) – Patienten sollen sicher sein können dass Implantate höchsten Qualitätsansprüchen genügen und sie bei Problemen mit Implantaten schnell informiert werden

Freitag, September 27th, 2019

Crosswind Landings at Düsseldorf – Landing and Departure during bad weather

Freitag, September 27th, 2019

Porsche – die Geschichte des Gotthardpasses ist auch eine Entwicklungsgeschichte der menschlichen Mobilität

Freitag, September 27th, 2019

Chaos Computer Club (CCC) – moderne Kommandozeilen Werkzeuge ( denn ohne eine Kommandozeile ist wie ein Himmel ohne Sterne )

Freitag, September 27th, 2019

There are really only two ways to recover from a successful ransomware attack on your data – pay the ransom or restore from backup

Freitag, September 27th, 2019

To have proper backups, you want to follow best practices when it comes to protecting your data. A well-known and accepted backup best practice is the 3-2-1 backup rule. What is involved with this 3-2-1 backup rule and how can it help to effectively protect your data. The 3-2-1 backup rule involves having at least (3) backup copies of your data, stored on at least (2) different forms of storage media, with at least (1) copy stored offsite

Red Hat Enterprise Linux 7 & CentOS 7 Servers – useful yum command examples

Freitag, September 27th, 2019
To list all available security updates without installing them
# yum updateinfo list security all
# yum updateinfo security
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
              : manager
rhel-7-server-rpms                                       | 3.5 kB     00:00
(1/2): rhel-7-server-rpms/7Server/x86_64/updateinfo        | 3.4 MB   00:01
(2/2): rhel-7-server-rpms/7Server/x86_64/primary_db        |  62 MB   00:19
RHSA-2019:0194 Moderate/Sec.  bind-libs-32:9.9.4-73.el7_6.x86_64
RHSA-2019:1294 Important/Sec. bind-libs-32:9.9.4-74.el7_6.1.x86_64
RHSA-2019:2057 Moderate/Sec.  bind-libs-32:9.11.4-9.P2.el7.x86_64
# yum update –security
# yum update –security –exclude=kernel\*
# yum info samba
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
              : manager
Installed Packages
Name        : samba
Arch        : x86_64
Version     : 4.9.1
Release     : 6.el7
Size        : 1.9 M
Repo        : installed
From repo   : rhel-7-server-rpms
Summary     : Server and Client software to interoperate with Windows machines
URL         : http://www.samba.org/
License     : GPLv3+ and LGPLv3+
Description : Samba is the standard Windows interoperability suite of programs
            : for Linux and Unix.
# yum downgrade samba-4.9.1
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
: manager
No packages marked for update
# yum info openssl
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
              : manager
Installed Packages
Name        : openssl
Arch        : x86_64
Epoch       : 1
Version     : 1.0.2k
Release     : 19.el7
Size        : 814 k
Repo        : installed
From repo   : rhel-7-server-rpms
Summary     : Utilities from the general purpose cryptography library with TLS
            : implementation
URL         : http://www.openssl.org/
License     : OpenSSL
Description : The OpenSSL toolkit provides support for secure communications
            : between machines. OpenSSL includes a certificate management tool
            : and shared libraries which provide various cryptographic
            : algorithms and protocols.
# yum downgrade openssl-1.0.2k
# yum update samba -y
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
: manager
No packages marked for update
# yum update openssl -y
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
              : manager
Resolving Dependencies
–> Running transaction check
—> Package openssl.x86_64 1:1.0.2k-16.el7 will be updated
—> Package openssl.x86_64 1:1.0.2k-19.el7 will be an update
–> Processing Dependency: openssl-libs(x86-64) = 1:1.0.2k-19.el7 for package: 1:openssl-1.0.2k-19.el7.x86_64
–> Running transaction check
—> Package openssl-libs.x86_64 1:1.0.2k-16.el7 will be updated
—> Package openssl-libs.x86_64 1:1.0.2k-19.el7 will be an update
–> Finished Dependency Resolution
Dependencies Resolved
============================================
 Package          Arch       Version               Repository              Size
============================================
Updating:
 openssl          x86_64     1:1.0.2k-19.el7       rhel-7-server-rpms     493 k
Updating for dependencies:
 openssl-libs     x86_64     1:1.0.2k-19.el7       rhel-7-server-rpms     1.2 M
Transaction Summary
============================================
Upgrade  1 Package (+1 Dependent package)
Total size: 1.7 M
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : 1:openssl-libs-1.0.2k-19.el7.x86_64                          1/4
  Updating   : 1:openssl-1.0.2k-19.el7.x86_64                               2/4
  Cleanup    : 1:openssl-1.0.2k-16.el7.x86_64                               3/4
  Cleanup    : 1:openssl-libs-1.0.2k-16.el7.x86_64                          4/4
  Verifying  : 1:openssl-libs-1.0.2k-19.el7.x86_64                          1/4
  Verifying  : 1:openssl-1.0.2k-19.el7.x86_64                               2/4
  Verifying  : 1:openssl-libs-1.0.2k-16.el7.x86_64                          3/4
  Verifying  : 1:openssl-1.0.2k-16.el7.x86_64                               4/4
Updated:
  openssl.x86_64 1:1.0.2k-19.el7
Dependency Updated:
  openssl-libs.x86_64 1:1.0.2k-19.el7
Complete!