The Shadowserver Foundation

Open LDAP Scanning Project

If you are looking at this page, then more than likely, you noticed a scan coming from this server across your network and/or poking at the LDAP Service on port 389/tcp.

The Shadowserver Foundation is currently undertaking a project to search for publicly accessible devices that have the LDAP Service running. The goal of this project is to identify openly accessible systems that have the LDAP Service running and report them back to the network owners for remediation.

Servers that are configured this way have been incorporated into our reports and are being reported on a daily basis.

Methodology

We are querying all computers with routable IPv4 addresses that are not firewalled from the internet on port 389/tcp with a request for information about the LDAP server and capturing the response. We intend no harm, but if we are causing problems, please contact us at: dnsscan [at] shadowserver [dot] org.

If you would like to test your own device to see if it has the LDAP Service accessible, try using the nmap command: "nmap -sU -p 389 --script ldap-rootdse [IP]" and look for the response.

Blocklisting

To be removed from this set of scanning you will need to send an email to dnsscan [at] shadowserver [dot] org with the specific CIDR's that you would like to have removed. You will have to be the verifiable owner of these CIDR's and be able to prove that fact. Any address space that is blocklisted will be publicly available here: https://scan.shadowserver.org/ldap/exclude.html

Useful Links

Scan Status

Statistics on current run

Other Statistics

If you would like other statistics and information on historical trends, please take a look at: https://scan.shadowserver.org/ldap/stats/. Otherwise, stats from the most current scan are listed below.


All devices with the LDAP Service Accessible

All LDAP

(Click image to enlarge)

These are the devices with LDAP accessible

If you would like to see more regions click here

All devices with the LDAP Service Accessible

All LDAP

(Click image to enlarge)

These are the devices with LDAP accessible



If you would like us to not scan your network, please let us know and we will remove your networks from the scan.

Likewise, if you have anymore questions please feel free to send us an email at: gro [tod] revfooreswodahs [ta] nacbarssnd

The Shadowserver Foundation