---
title: The PingDirectory server’s use of certificates
description: "Reference the two main certificate types the PingDirectory server uses: listener certificates and the inter-server certificate."
component: pingdirectory
version: 10.2
page_id: pingdirectory:pingdirectory_security_guide:pd_sec_pd_server_cert
canonical_url: https://docs.pingidentity.com/pingdirectory/11.1/pingdirectory_security_guide/pd_sec_listener_certs.html
llms_txt: https://docs.pingidentity.com/pingdirectory/llms.txt
docs_for_agents: https://developer.pingidentity.com/build-with-ai/docs-for-agents.md
revdate: 2023-09-13T00:00:00Z
---

# The PingDirectory server's use of certificates

The PingDirectory server uses two main types of certificates: listener certificates and an inter-server certificate.