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8
Internal firewall
If you have a firewall on the internal network, you may need to adjust its policy to open ports for back-end applications with
which the appliance must communicate. In addition to opening ports for standard network services such as DNS and email, you
may need to modify your firewall policy before the appliance can access the following services.
Table 2. Internal firewall
Traffic Type Port/protocol
Usage
Microsoft
networking
138/tcp and
138/udp
137/tcp and
137/udp
139/udp
162/snmp
445/smb
Used by WorkPlace to
perform WINS name
resolution, browse
requests, and access
file shares
LDAP
(unencrypted
)
389/tcp
Communicate with an
LDAP directory or
Microsoft Active
Directory
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