AR-3000SD (Ver.1.00) Command Reference - 12
If the results of the ping command indicate that the network connection has not been made correctly,
check the following.
･
Is the power to the AR-3000SD turned on?
･
Is the power to the hub turned on?
･
Is the UTP cable connection without any problems?
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Is the type of UTP cable correct (straight or crossover)?
･
Is there a conflict with the IP address assigned to another device?
･
Are the subnet mask and gateway settings correct?
If a proxy server is on the LAN, then depending on the proxy settings, establishing a connection might
not be possible unless further steps are performed. To establish a connection, try one of the following
methods.
1) Use the Internet option to make the settings for connecting directly to the Internet and not via the
proxy server.
2) Use the Internet option to register the IP address assigned to the AR-3000SD as not to use the
proxy.
3) Contact your network administrator to register the IP address of the AR-3000SD in the DNS
database.
2.2.4 Firewall
settings
If a firewall or other security software is in use, establishing correct communication between the
computer and the AR unit might be difficult. In such cases, refer to the following examples and specify
the client program and port numbers as exceptions.
Service Port
number
TELNET 23
FTP (control)
21
FTP (data transmission)
20
HTTP 80
