Networking Port Reference: Expressway Traversal Pair
Purpose
Src. IP
Src. ports
Protocol
Dest. IP
Dst. Ports
Administrator SSH
Admin PCs
1024-65535
TCP
Expressway-C
22
Administrator HTTP
*
Admin PCs
1024-65535
TCP
Expressway-C
80
Administrator HTTPS
Admin PCs
1024-65535
TCP
Expressway-C
443
Name resolution (DNS)
Expressway-C
1024-65535
UDP & TCP
†
Internal name server
53
Time synchronization (NTP)
Expressway-C
123
UDP
Internal time server
123
Table 4 Basic Networking Ports for Expressway-C
* Expressway redirects HTTP to HTTPS by default. You don't need to open the HTTP port, but you can allow HTTP for
convenience and redirect to HTTPS.
† Expressway will attempt DNS resolution over TCP if the response is too large.
Purpose
Src. IP
Src. ports
Protocol
Dest. IP
Dst.
Ports
Administrator SSH
Admin PCs
1024-
65535
TCP
Expressway-E private
IP
22
Administrator HTTP
Admin PCs
1024-
65535
TCP
Expressway-E private
IP
80
Administrator HTTPS
Admin PCs
1024-
65535
TLS
Expressway-E private
IP
443
Internal name resolution (DNS)*
Expressway-E private
IP
1024-
65535
UDP
& TCP
Internal name server
53
External name resolution (DNS)
Expressway-E public
IP
1024-
65535
UDP
& TCP
External name server
53
Internal time synchronization
(NTP)*
Expressway-E private
IP
123
UDP
Internal time server
123
External time synchronization
(NTP)
Expressway-E public
IP
123
UDP
External time server
123
Table 5 Basic Networking Ports for Expressway-E
* You may prefer to connect Expressway-E to external DNS and NTP. You do not need both.
10
Cisco Expressway IP Port Usage Configuration Guide
Summary of Contents for Expressway Series
Page 9: ...Basic Networking Traversal Pair 9 Cisco Expressway IP Port Usage Configuration Guide ...
Page 11: ...11 Cisco Expressway IP Port Usage Configuration Guide ...
Page 15: ...SIP Calls 15 Cisco Expressway IP Port Usage Configuration Guide ...
Page 19: ...19 Cisco Expressway IP Port Usage Configuration Guide ...
Page 30: ...Jabber Guest Dual NIC Deployment 30 Cisco Expressway IP Port Usage Configuration Guide ...
Page 32: ...Jabber Guest Single NIC Deployment 32 Cisco Expressway IP Port Usage Configuration Guide ...
Page 35: ...Off Premises Microsoft Clients Cisco Expressway IP Port Usage Configuration Guide 35 ...
Page 40: ...SIP Edge for Meeting Server Connections 40 Cisco Expressway IP Port Usage Configuration Guide ...