Port Requirements and General Specifications

Port Requirements

For a ports diagram, see CTERA Edge Filer Ports Diagram.

Firewall ports opened for LAN communication and managing the Edge Filer user interface:

Port Protocol Direction Notes
443 TCP Inbound HTTPS. This port should be behind the firewall.

Firewall ports opened to the CTERA Portal:

Port Protocol Direction Notes
443 TCP Outbound HTTPS. This port should only be open to the specific CTERA Portal IP addresses.
995 TCP Outbound CTTP. Communications with the CTERA Portal. For details about CTTP, see What is the CTTP Transport Protocol.
8443 TCP Outbound Communications with CTERA Portal for log collection.

Firewall ports opened to the CTERA Portal backend storage when Direct Mode is set for the storage node in the portal:

Port Protocol Direction Notes
443 TCP Outbound HTTPS

When Direct Mode is used, the edge filer requires the certificate to enable the TLS handshake with the object storage. See Loading a Trusted CA Certificate to a CTERA Edge Filer for details.

Firewall ports opened for Active Directory:

Port Protocol Direction Notes
88 TCP/UDP Outbound If Kerberos is used
389 TCP/UDP Outbound LDAP protocol
445 TCP Outbound SMB when joining to a domain as a Computer account
3268 TCP/UDP Outbound LDAP GC (Global Catalog) protocol

Firewall ports opened for antivirus updates:

Port Protocol Direction Notes
80 TCP Outbound HTTP

Firewall ports opened for SMTP:

Port Protocol Direction Notes
25 TCP Outbound The port is configurable in the edge filer user interface (in the Configuration view, select Alerts > Mail Server in the navigation pane).

Firewall ports opened for NTP updates:

Port Protocol Direction Notes
123 UDP Outbound —

Ports opened when you want to automatically send crash reports to CTERA (at URL available from CTERA Support) :

Port Protocol Direction Notes
443 TCP Outbound See Automatically Sending Crash Reports to Support

Warning: CTERA Edge Filers operate behind a firewall, and it is important to leave all other ports closed.

Internal network file sharing protocols (not requiring any port configuration):

Port Protocol Direction Notes
111, 2049 TCP Inbound NFS
445 TCP Inbound SMB

Browser Requirements

The latest two releases of Google Chrome, Apple Safari, Mozilla Firefox, and Microsoft Edge.

Software Features

Features Feature Description
Supported File Sharing Protocols SMB 2.x/3.x (Windows File Sharing), NFS v3/v4, FTP, WebDAV
Monitoring SNMP

Cloud Service Features

Features Feature Description
Protocol Security TLS (Transport Level Security)
Efficiency Incremental updates, data compression, block level deduplication, simultaneous synchronization
Versioning Retention of previous file versions
Additional Services Centralized management, centralized monitoring, Cloud Drive caching and synchronization, reporting, logging, remote access