SerNet News

COVID19 – Status at SerNet (12/2021)

  • Offices in Göttingen and Berlin are staffed at least with a minimum crew during business hours.
  • On-site visits to our customers are reduced to the minimum necessary.
  • If possible, we do not postpone any projects, as this crisis will, according to the current state of knowledge, extend well beyond 2021. Delays will be discussed with our customers and negative effects will be reduced as much as possible.
  • The capacities of our telephone switchboard has been expanded. Please send email to the known addresses or if there are problems with the telephone availability.
  • The number and capacity of VPN channels for our customers has been significantly increased to avoid bottlenecks. All customers can simultaneously use all VPN channels managed by SerNet to access their own networks with sufficient bandwidth.
SerNet SerNet 2020

Scope and performance: ksmbd and Samba in comparison

ksmbd & SAMBA

"ksmbd", a new kernel module which implements an SMB server, was introduced with Linux Kernel 5.15 in November 2021. The Samba Team at SerNet has posted an article at in which ksmbd and the existing Samba fileserver "smbd" are addressed in comparison

The article "ksmbd: a new in-kernel SMB server" addresses performance in particular, since ksmbd claims performance improvements on a wide range of benchmarks. It also emphasizes the importance of recent improvements in Samba's IO performance: by leveraging the new "io_uring" Linux API Samba is able to provide roughly 10x the throughput compared to ksmbd.

But overall, the team points out, that ksmbd will integrate with Samba in the future. SerNet’s Samba developers are looking forward to working with and on ksmbd! If there are any questions about ksmbd, smbd and the way forward, feel free to contact us.

SerNet SAMBA 2021

New Samba team management at SerNet

Samba Logo

Ralph Böhme is the new team leader of the Samba team at SerNet. In addition, Jule Anger (also SerNet) takes over release management in the international Samba team.

Karolin Seeger, who was previously responsible for team leadership at SerNet and release management on the core team, is moving professionally to Red Hat on October 1, 2021. At SerNet, Ralph Böhme will succeed her as team leader of the Samba department. With the foreseeable end of the Netatalk software for coupling Linux and macOS via AFP he switched to SerNet and the Samba team in 2013.

Jule Anger has been working as a developer in SerNet's Samba department for 2 years. At the same time she takes over the release management, she officially becomes a member of the international Samba core team. The release management for Samba will thus continue to be sponsored by SerNet after the departure of Karolin Seeger. Böhme on Jule Anger taking office: "With her, we have a highly motivated colleague in our team and are very pleased that she will contribute to the Samba project on an international level with a breath of fresh air."

About SerNet: SerNet is the leading provider of services and products around the free software Samba and is active worldwide. With SAMBA+ SerNet releases its own professional Samba distribution.

About Samba: Samba is the only free implementation of the SMB protocol that provides file and print services, highly available clusters, and identity management with Active Directory in an open source software, see

SAMBA SerNet 2021 2021 SerNet SAMBA

Loxen is the new Chairman of DENIC's Supervisory Board

Dr Johannes Loxen

Dr. Johannes Loxen is the new Chairman of the Supervisory Board of DENIC eG. DENIC is the operating organization and central registry for all domains below the top level domain ".de".

Loxen, managing director of SerNet GmbH, joined DENIC's supervisory board in 2019. He was previously a member of the board from 2007 to 2016 . SerNet has been an independent registrar for ".de" since 2001.

Go to DENIC eG.

SerNet 2021 2021 SerNet

SerNet signs Open Letter protesting German Cybersecurity Strategy 2021

Picture from xresch at Pixabay.

In an open letter to the German government, more than 60 individuals, companies and associations from civil society and business are speaking out against the "Cybersecurity Strategy for Germany 2021". SerNet GmbH is among the first signatories and supports the action. 

The signatories of the open letter "call on the federal government to postpone the adoption of the cybersecurity strategy to the next legislature or at least to cancel the expansion of powers for the security authorities without replacement. Crucial parts of the strategy have long been highly controversial within the German government and have received massive criticism from representatives of German industry, academia and civil society."

The Interior Ministry's nearly 130-page draft Cybersecurity Strategy 2021 was not submitted until June 9, just before the end of the current legislative period, and experts were invited to comment until June 16.

Criticized - in addition to the questionable timing a few months before the federal election - are the numerous proposed measures "that would push surveillance by German security authorities at the expense of IT security" and lock it in for many years to come, such as circumventing secure encryption. Also flagged are the required powers for active cyber defense, the planned expansion of the Central Office for Information Technology in the Security Sector (ZITiS) while at the same time lacking control and protection measures and without adequate expansion of parliamentary oversight.

The open letter states very clearly, "If the strategy is adopted in its current form, it would cement a cybersecurity policy for years to come for which there is insufficient support in business and society and whose measures have little prospect of improving IT and cybersecurity in Germany. The trench warfare over the direction of national cybersecurity policy would thus be perpetuated - to the detriment of security in Germany."

The full open letter (PDF, German only) can be viewed here:

Offener Brief gegen die Cybersicherheitsstrategie 2021

Among others, the Süddeutsche Zeitung ("Open letter against Seehofer's cybersecurity strategy") and ("For a Real Cybersecurity Strategy Without New Surveillance Measures") already reported on the Open Letter.

SerNet 2021 2021 SerNet