White Papers

PAGE 15 OF 24
Access to DRAC 5
Disabling Services and Changing the Service Port Number
There are several out-of-band services running on a DRAC 5 by default. These services open a
network port that listens for a connection.
Dell strongly recommends disabling all unused services on DRAC 5 cards
.
The following are services which can be enabled or disabled by administrators:
 SNMP Agent
 Telnet (disabled by default)
 SSH
 Web Server
 Console Redirection Service
 Virtual Media Service
 IPMI LAN interface (disabled by default)
 IPMI SOL interface
Ports must be correctly configured to allow DRAC 5 to work through firewalls. The following table
lists the ports used by DRAC 5.
Port # Protocol Port
Type
DRAC 5
Firmware
Version
Maximum
Encryption
Level
Direction Usage Configurable
22 SSH version 2 TCP 1.0 128-bit In/Out Optional Secure
Shell (SSH) CLI
management
Yes
23 Telnet TCP 1.0 None In/Out Optional Telnet CLI
management
Yes
25 SMTP TCP 1.0 None In/Out Optional e-mail alert
messages
No
53 DNS UDP 1.0 None In/Out Dynamic Domain
name server (DNS)
registration of the
host name assigned
within DRAC 5 and
ADS authentication
DNS lookup
No