Date Code 20210715
SEL-2890 Instruction Manual
Appendix F
Open Network Ports
The following information is intended to help security auditors verify that the network
hosts and open ports on a control network are what is expected.
The following tables list the network ports that may be presented by the device.
Physical Port
# Ports
Default
Can Be Disabled
Serial Ports
1
Enabled
No
Ethernet Ports
1
Enabled
No
Ethernet
Services:
Server
Device
Function
Protocol
Default
Listening
Port
Port
Settable
Default
State
Can Be
Disabled
Hypertext
Transfer
Protocol
(HTTP)
Relay
Display
TCP
80
No
Enabled
No
Telnet (Server)
Passthrough
Mode
TCP
23
Yes
Enabled
Yes
Raw TCP
(Server)
Passthrough
Mode
TCP
23
Yes
Disabled
Yes
Telnet (Server)
Console
TCP
1025
Yes
Enabled
No
File Transfer
Protocol (FTP)
Authentica-
tion Proxy
TCP
none
Yes
Enabled
No
Internet Control
Message
Protocol (ICMP)
System
ICMP
N/A
N/A
Enabled
No
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