Silent Brick System
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Protocols and Functions

Protocols and Communication

Description

Direction

Protocol

Port

Ping

Incoming

ICMP

-

SSH for
FAST LTA Support

Incoming

TCP

22

DNS

Outbound

TCP

53

NTP

Outbound

TCP/UDP

123

WEBGUI HTTPS

Incoming

TCP

443

IPerf31

Incoming
Outbound

TCP

5201

SNMP1

Incoming

UDP

Port 161

For SMB and Active Directory integrations1

Kerberos

Outbound

TCP

88

End Point Mapper

Outbound

TCP

135

NetBIOS Name Service

Outbound

TCP

137

NetBIOS Datagram

Outbound

TCP

138

NetBIOS Session

Outbound

TCP

139

LDAP

Outbound

TCP

389

SMB over TCP

Incoming

TCP

445

Kerberos kpasswd

Outbound

TCP

464

LDAPS

Outbound

TCP

636

Dynamic RPC Ports

Outbound

TCP

49152-65535

Global Catalog

Outbound

TCP

3268

Global Catalog SSL

Outbound

TCP

3269

For NFS connections1

NFS Port 111

Incoming

TCP/UDP Port 111


NFS Port 2049

Incoming

TCP/UDP

2049

For Virtual Tape connections1

iSCSI

Incoming

TCP

3260

Email notifications

SMTP1

Outbound

TCP

25 or 587

O-Auth1

Outbound

TCP

443

Between connected Silent Brick Systems1

Ping

Outbound

ICMP


SSH

Outbound

TCP

22

1Optional ports: Only required when using the corresponding function.