title	description	sidebar_label	hide_table_of_contents
Firewall Rules	Required firewall configuration	Firewall Rules	true

You must allow these rules to make Passbolt work in a firewalled environment:

Inbound rules

Protocol name	Port number	Transport Layer Protocol	Comment
HTTP	80	TCP	Optional, should be used only to redirect to HTTPS
HTTPS	443	TCP	To serve Passbolt through HTTPS

Outbound rules

Protocol name	Port number	Transport Layer Protocol	Comment
HTTP	80	TCP	To be able to connect to operating system repositories who don't use https (Ubuntu)
HTTPS	443	TCP	To be able to connect to package repository or bitbucket repository
SMTP	usually 587	TCP	To send email notifications, used port depends of your SMTP server configuration, usually 25/TCP, 587/TCP or 465/TCP
DNS	53	UDP	To be able to resolve SMTP server name, or download.passbolt.com to check for updates
NTP	123	UDP	To make server synchronized to a NTP server. Mandatory to make GPG or MFA/OTP work
HKPS	11371	TCP	HKPS protocol for receiving GPG keys