7.0.8 Insight Remote Support Security White Paper

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Appendix A: Summary of Network Ports for Standard
Operating System Connectivity
The following tables summarize all ports that might be used in Insight Remote Support Hosting Device Operating
System Connectivity. The following ports are required for basic system operation.
A.1 Standard Operating System Network Ports
Table A.1 Standard Operating System Connectivity - Firewall/Port Requirements
Protocol
Ports
Source
Destination
Function
Configurable
Optional
UDP
53
System
DNS Server
Domain Name Service (DNS) - Host name
resolution.
No
Required
UDP
123
System
NTP Server
Network Time Protocol - Synchronizes
system clock
No
Recommended
TCP
3389
Customer's MSRDP
(Terminal Services)
Client
System
Remote Desktop Protocol - Remote
management (to change port number, see
http://support.microsoft.com/kb/306759)
Yes
Optional
TCP
22
Customer's SSH
Client
System
Secure Shell - Remote management
Yes
Optional
TCP
80 or
web
proxy
port
Customer's Web
Browser
Web Server or
Web Proxy
HTTP web access
Yes
Optional
TCP
443 or
web
proxy
port
Customer's Web
Browser
Web Server or
Web Proxy
HTTPS web access
Yes
Optional
TCP
25
System
SMTP Server
Simple Mail Transfer Protocol - Sending
email
No
Optional