About project
SNER is a proactive network monitoring service operated by CESNET for network security and research purposes within the CESNET2 network.
The service continuously maps enrolled networks, performs service discovery, and conducts fingerprinting similar to Shodan, Censys, and Shadowserver services. Participating networks can enhance their visibility within their address space and potentially receive early warnings about possible vulnerabilities.
- GitHub project: https://github.com/bodik/sner4
- Scanning Techniques:
- IP enumeration
- DNS enumeration
- TCP SYN scan
- UDP service discovery
- Service version fingerprinting
- JA3/JARM scanning
- TLS scanning
- Vulnerability scanning (Nuclei)
- Data Mining Techniques:
- Service version extraction
- CPE-CVE correlation
Scanning sources
Note that the following list is subject to change at any time (machine-readable version).
| Hostname | IPv4 Address | IPv6 Address |
|---|---|---|
| sner.flab.cesnet.cz | 78.128.214.225 | 2001:718:1808:f000::225 |
| sner2.flab.cesnet.cz | 78.128.214.226 | 2001:718:1808:f000::226 |
| sner3.flab.cesnet.cz | 78.128.214.227 | 2001:718:1808:f000::227 |
| sner4.flab.cesnet.cz | 78.128.214.228 | 2001:718:1808:f000::228 |
| sner5.flab.cesnet.cz | 78.128.214.229 | 2001:718:1808:f000::229 |
| sner6.flab.cesnet.cz | 78.128.214.231 | 2001:718:1808:f000::231 |
| sner7.flab.cesnet.cz | 78.128.214.232 | 2001:718:1808:f000::232 |
| sner8.flab.cesnet.cz | 78.128.214.233 | 2001:718:1808:f000::233 |
Contact
Acknowledgement
Computational resources were supplied by the project "e-Infrastruktura CZ" (e-INFRA CZ LM2018140 ) supported by the Ministry of Education, Youth and Sports of the Czech Republic.
The Pallets organization develops and supports Flask, Jinja, Werkzeug, Click, and other Python libraries.