D-Link DFL-800-AV-12 User Manual - Page 145
TFTP, TFTP is a much simpler version of FTP with more limited
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6.2.4. TFTP Chapter 6. Security Mechanisms • Destination: 21 (the port the ftp server resides on) • ALG: select the newly created ftp-outbound 3. Click OK Rules (Using Public IPs). The following rule needs to be added to the IP rules if using public IP's; make sure there are no rules disallowing or allowing the same kind of ports/traffic before these rules. The service in use is the ftp-outbound, which should be using the ALG definition ftp-outbound as described earlier. C. Allow connections to ftp-servers on the outside: 1. Go to Rules > IP Rules > Add > IPRule 2. Now enter: • Name: Allow-ftp-outbound • Action: Allow • Service: ftp-outbound 3. For Address Filter enter: • Source Interface: lan • Destination Interface: wan • Source Network: lannet • Destination Network: all-nets 4. Click OK D. Rules (Using Private IPs). If the firewall is using private IP's, the following NAT rule need to be added instead: 1. Go to Rules > IP Rules > Add > IPRule 2. Now enter: • Name: NAT-ftp-outbound • Action: NAT • Service: ftp-outbound 3. For Address Filter enter: • Source Interface: lan • Destination Interface: wan • Source Network: lannet • Destination Network: all-nets 4. Check Use Interface Address 5. Click OK 6.2.4. TFTP Trivial File Transfer Protocol (TFTP) is a much simpler version of FTP with more limited capabilities. Its purpose is to allow a client to upload files to or download files from a host system. TFTP data transport is based on the UDP protocol and therefore it supplies its own transport and session control protocols which are layered onto UDP. 145