D-Link DFL-2500 User Guide - Page 140
Create HTTP SAT/NAT Rule
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14.3. Scenarios: IP Rules Configuration 121 3. Create HTTP SAT/NAT Rule Next step is to create an NAT rule to permit traffic SAT:ed by the above rule. Rules → IP Rules → Add → IP Rule: Name: SATNAT to WebServer Action: NAT Service: http Source Interface: any Source Network: all-nets Destination Interface: core Destination Network: ip ext Then click OK 4. Create HTTP NAT Rule Final step is to create a NAT rule that allows internal machines on the local network to access the Internet via HTTP. Rules → IP Rules → Add → IP Rule: Name: HTTP from LAN Action: NAT Service: http Source Interface: LAN Source Network: lan-net Destination Interface: any Destination Network: all-nets Then click OK Note SAT needs a second rule SAT rule needs a second rule line to pass traffic through (shown as the "Allow" rule above). The second rule can be a Allow, FwdFast, or NAT, and this second rule line must be placed below the initiating SAT rule. The initiating SAT rule does nothing to the actual data. If there is a match with the packet received and a SAT rule, the firewall will D-Link Firewalls User's Guide
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