I Cannot Ping AS/400 Over VPN
Application System/400 describes a family of computer systems developed by IBM in 1988. The often misused term "ping" refers to sending information over a network to find out if a specific device is available for connection. You can't ping AS/400 as such, but you can ping a hardware component in an AS/400 system. A virtual private network allows remote users to access a local area network via the Internet.
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AS/400
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As a family of midrange business computers, AS/400 works in a variety of configurations, including network servers to PCs, hosts or intermediate nodes to other AS/400s, and remote systems to mainframe-controlled networks. It features the operating system software environment OS/400, which includes an integrated relational database. When used as a server, an AS/400 device can be programmed to connect to the Internet as an interface for all computers within the network, and for remote access from distant locations via a VPN.
VPN
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A VPN uses software to set up the server or router in a LAN to allow remote clients to enter via the Internet. To connect, a remote client enters the server IP address into his browser, then enters a user ID and password. In some cases, the network administrator installs software on the client's computer with an icon that the user can click to enter his ID and password. Neither type of command pings an AS/400 network, but both attempt to establish a connection. If you can't establish a connection, you can ping the network to see if it's available.
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Ping
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A ping sends four packets of information to establish the availability of a device. If available, your computer displays the response information, which includes the device's numerical IP address; the amount of time each packet took to make the round trip; the fastest, slowest and average times of the packets; and a report if any packets were lost. If any packet does not respond within 128 milliseconds, the display reports, "Request timed out." You can ping devices within a LAN, or from one LAN to another over a private wide area network or via the Internet.
Ping AS/400 Over VPN
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To ping an AS/400 server or router via VPN, you must be connected to the Internet, then manually enter the command. To find the command line in Windows 7, click "Start," enter "Run" in the search line, click on the "Run" icon, enter "cmd" in the space provided, then click "OK." On the black screen with white letters, enter the command at the prompt (">"). Type "ping," a space and the IP address of the AS/400 network server, then press "Enter." For example, type "ping www.myas400.com."
Ping Command Times Out
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If the report on your computer shows that all four packets have timed out, the server or router connected to the Internet at the AS/400 network may be disconnected or shut down, or the firewall may be programmed to not allow access from your particular computer or area. There is no way you can fix it from your end. If you're an authorized user of the AS/400 system, contact the network administrator. If you're not an authorized user, attempting to enter could be construed as hacking, and you could face criminal prosecution.
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