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Either from below is possible:Link to TFTP server is temporarily damaged.Link to TFTP server is permanently damaged.TFTP is shut down.
Because if you don't, the internet will not work properly. "iptables" is the method used to configure the built-in firewall in the Linux kernel.
TFTP server, Flash
it copies the ios FLASH to TFTP SERVER
Options are: A) Make sure the TFTP server is reachable across the network. B) Check the password authentication for TFTP access. C) Assure that the TFTP server has enough hard disk space for the IOS image. D) Make sure that the TFTP server can store text files. E) Adjust the maximum IP packet size to speed up transfer F) Verify that the TCP connection to TFTP server is ready. Anyone? Answer is all the above.
"The TFTP server is used for webpages that have a maximum server load. It makes it easier for your webpage to get a lot of hits without going down, and keeps it secure."
RouterC#copy running-config tftp [copy run tftp]
RouterC#cpoy tftp running-config [ cpoy tftp run ]
By default a TFTP server will accept connection requests on UDP port 69.
This command will copy the running configuration (located in RAM) of a Cisco device to a TFTP server. After executing the command you will be prompted for further information about the TFTP server (Server Address, file name, etc.).
What is the purpose of using the copy tftp flash command on a router? to back up the current IOS image to a server to restore the IOS image from a server to back up the router configuration to a server to restore the router configuration from flash
This command will allow you to copy a configuration from a TFTP server to the running configuration of a Cisco device. When you issue the command you will be prompted for further details about the TFTP server. The new configuration will replace the active one (or running configuration) and make any necessary changes.