Cisco Cisco Expressway Maintenance Manual
Port usage
The pages under the
Maintenance > Tools > Port usage
menu show, in table format, all the IP ports that
have been configured on the Expressway.
The information shown on these pages is specific to that particular Expressway and varies depending on the
Expressway's configuration, the option keys that have been installed and the features that have been
enabled.
Expressway's configuration, the option keys that have been installed and the features that have been
enabled.
The information can be sorted according to any of the columns on the page, so for example you can sort the
list by IP port, or by IP address.
list by IP port, or by IP address.
Each page contains an Export to CSV option. This lets you save the information in a CSV (comma
separated values) format file suitable for opening in a spreadsheet application.
separated values) format file suitable for opening in a spreadsheet application.
Note that IP ports cannot be configured separately for IPv4 and IPv6 addresses, nor for each of the two LAN
interfaces. In other words, after an IP port has been configured for a particular service, for example SIP UDP,
this will apply to all IP addresses of that service on the Expressway. Because the tables on these pages list
all IP ports and all IP addresses, a single IP port may appear on the list up to 4 times, depending on your
Expressway configuration.
interfaces. In other words, after an IP port has been configured for a particular service, for example SIP UDP,
this will apply to all IP addresses of that service on the Expressway. Because the tables on these pages list
all IP ports and all IP addresses, a single IP port may appear on the list up to 4 times, depending on your
Expressway configuration.
The port information is split into the following pages:
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On an Expressway-E you can also configure the specific listening ports used for firewall traversal via
Configuration > Traversal > Ports
.
Local inbound ports
The
Local inbound ports
page (
Maintenance > Tools > Port usage > Local inbound ports
) shows the
listening IP ports on the Expressway that are used to receive inbound communications from other systems.
For each port listed on this page, if there is a firewall between the Expressway and the source of the inbound
communications, your firewall must allow:
communications, your firewall must allow:
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inbound traffic to the IP port on the Expressway from the source of the inbound communications, and
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return traffic from that same Expressway IP port back out to the source of the inbound communication.
Local outbound ports
The
Local outbound ports
page (
Maintenance > Tools > Port usage > Local outbound ports
) shows
the source IP ports on the Expressway that are used to send outbound communications to other systems.
For each port listed on this page, if there is a firewall between the Expressway and the destination of the
outbound communications, your firewall must allow:
outbound communications, your firewall must allow:
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outbound traffic out from the IP port on the Expressway to the destination of the outbound communications,
and
and
Cisco Expressway Administrator Guide (X8.5.1)
Page 243 of 399
Maintenance
Port usage