Product SiteDocumentation Site

3.3. System Ports

FreeIPA uses a number of ports to communicate with its services. These ports, listed in Table 3.1, “FreeIPA Ports”, must be open and available for FreeIPA to work. They cannot be in use by another service or blocked by a firewall. To make sure that these ports are available, try iptables to list the available ports or nc, telnet, or nmap to connect to a port or run a port scan.
To open a port:
# iptables -A INPUT -p tcp --dport 389 -j ACCEPT
The iptables man page has more information on opening and closing ports on a system.
Table 3.1. FreeIPA Ports
Service Ports Type
HTTP/HTTPS
80
443
TCP
LDAP/LDAPS
389
636
TCP
Kerberos
88
464
TCP and UDP
DNS 53 TCP and UDP
NTP 123 UDP