Cisco ONS 15454 SDH Specifications Page 111

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2-27
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 2 Set up PC and Log into CTC
Accessing ONS 15454 SDH Behind Firewalls
Step 3 On the Add Node dialog box, enter the node name (or IP address).
Step 4 If you want to add the node to the current login group, click Add Node to Current Login Group.
Otherwise, leave it unchecked.
Note The Add Node to Current Login Group checkbox is active only if you selected a login group
when you logged into CTC.
Step 5 Click OK.
After a few seconds, the new node will be displayed on the network view map.
2.6 Accessing ONS 15454 SDH Behind Firewalls
If an ONS 15454 SDH or CTC computer resides behind a firewall that uses port filtering, you must
receive an Internet Inter-ORB Protocol (IIOP) port from your network administrator and enable the port
on the ONS 15454 SDH and/or CTC computer, depending on whether one or both devices reside behind
firewalls.
Note For information about firewall settings using the Provisioning > Network > Gateway Settings feature,
see Chapter 4, IP Networking.
If the ONS 15454 SDH is in a protected network and the CTC computer is in an external network, as
shown in Figure 2-5, enable the IIOP listener port specified by the firewall administrator on the ONS
15454 SDH. The ONS 15454 SDH sends the port number to the CTC computer during the initial contact
between the devices using Hyper-Text Transfer Protocol (HTTP). After the CTC computer obtains the
ONS 15454 SDH IIOP port, the computer opens a direct session with the node using the specified IIOP
port.
Figure 2-5 ONS 15454 SDH residing behind a firewall
If the CTC computer and the ONS 15454 SDH both reside behind firewalls (Figure 2-6 on page 2-28),
set the IIOP port on both the CTC computer and the ONS 15454 SDH. Each firewall can use a different
IIOP port.
61331
CTC computer
External network Protected network
ONS 15454 SDH
Unprotected
network
Private
network
IIOP port
IIOP port
Firewall
Port
filtering
ONS 15454 SDH
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