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    Everything you need to build and manage cloud infrastructure—virtual machines and clusters, networking, data storage and load balancers.
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    Ready-made physical server configurations with rapid deployment and component replacement within 24 hours. Internet traffic starting at 15 TB.
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- Networking
  - Floating IPs
    Easily reassigned IP addresses to ensure service continuity and high availability for mission-critical applications.
  - Virtual Networks
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  - IP Addresses Leasing
    An extensive IP-address marketplace that provides a solid foundation for scalability and business continuity.
  - Cloud Load Balancing
    Even distribution of traffic across virtual servers, ensuring high availability and top infrastructure performance.
  - Firewall as a Service (FWaaS)
    Protect your cloud resources by defining access rules and evenly distributing traffic to keep applications running smoothly.
- Cloud Storage
  - Object Storage
    Scalable, flexible and easy-to-manage storage for all kinds of data and workloads.
  - Cloud Data Storage
    Our network storage supports a broad range of protocols, including FTP/SFTP, NFS, CIFS/Samba, iSCSI, SSH (SCP), WebDAV and RSYNC.
- Containers
  - Kubernetes
    An orchestration system that automates the deployment, scaling and management of containerised applications.
  - Container Registry
    A secure service for storing, managing and deploying container images, optimising DevOps workflows.
- Managed Databases
  - MongoDB
    A high-performance NoSQL database ideal for flexible, efficient management of large volumes of data.
  - Elasticsearch
    A powerful search and analytics engine for indexing large volumes of data and handling real-time queries.
  - PostgreSQL
    A massively parallel processing (MPP) platform for large-scale data warehousing and analytics.
  - Greenplum
    A massively parallel processing (MPP) platform for large-scale data warehousing and analytics.
  - MySQL
    The world’s most popular open-source database, renowned for its reliability, simplicity and speed.
  - Redis
    An in-memory data-structure store that serves as a database, cache and message broker for lightning-fast data access.
  - Apache Kafka
    A distributed data-streaming platform that lets you build data pipelines and real-time applications.
  - ClickHouse
    A high-performance columnar DBMS optimised for online analytical processing (OLAP).
  - OpenSearch
    An open search-and-analytics suite used for real-time log monitoring and analysis.
- Security
  - DRaaS
    Ensure business continuity with our reliable disaster-recovery solutions, delivering rapid restoration and minimal downtime when unexpected issues arise.
  - DDoS Protection
    Neutralise DDoS attacks at every OSI layer up to L7 while maintaining your web resources’ performance with Qurator and DDOS Guard.
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News

Blocked Ports and IPs

Published on 30.10.2025

All data is current as of 31.10.2025

For security reasons, some network ports and IP addresses are blocked. These measures help prevent unauthorized access, protect services from attacks, and reduce the risk of malicious traffic spreading. Below is a list of blocked ports and their purpose.

Blocked Ports

Port	Protocol	Direction	Description
137	TCP/UDP	Ingress	NetBIOS Name Service (NBNS), used for naming in Windows networks.
138	UDP	Ingress	NetBIOS Datagram Service (NBDS), datagram transmission.
139	TCP	Ingress	NetBIOS Session Service (NBSS), provides session connections.
445	TCP	Ingress	SMB (Server Message Block) over TCP/IP, file and printer sharing.
1688	TCP	Ingress	Microsoft Key Management Service (KMS), product activation.
25	TCP	Egress	SMTP, email sending (unblocked on request).
23	TCP	Ingress	Telnet, outdated insecure remote access protocol.
1900	UDP	Ingress	Simple Service Discovery Protocol (SSDP), part of UPnP.
3702	TCP/UDP	Ingress	Web Services Dynamic Discovery (WS-Discovery), web services discovery.
11211	UDP	Ingress	Memcached, distributed data caching.
17	TCP/UDP	Ingress	Quote of the Day (QOTD), outdated string message protocol.
19	TCP/UDP	Ingress	Character Generator Protocol (CHARGEN), outdated service often used by attackers in DDoS.
53413	UDP	Ingress	Remote Code Execution (RCE) vulnerability on Netcore/Netis routers via UDP port 53413 (backdoor).

We also block so-called bogons — IP addresses from private or reserved ranges (including ranges defined in RFC 1918) that should not be used on the internet. This helps prevent internal addresses from leaking into public Internet traffic and protects against IP spoofing attacks.

Blocked RFC 1918 address ranges:

10.0.0.0/8: from 10.0.0.0 to 10.255.255.255;
172.16.0.0/12: from 172.16.0.0 to 172.31.255.255;
192.168.0.0/16: from 192.168.0.0 to 192.168.255.255.