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SRX5308 secondary IP port forwarding
Just got a brand new SRX5308 to replace a dependable but somewhat underpowered FVS336g. I spent the past few days trying to get it to do simple port forwarding on a secondary IP. I tried 3.0.7-29 an...
The documentation is a bit ambiguous on this matter. But I've added secondary IPs inside the same subnet as primary WAN IP. It works for me. I've managed to stump tech support for over a week with this issue. I was only able to solve this after spotting a pattern:
Primary WAN IP port fowarding always works
Secondary IP port forwarding does not work
IP range port forwarding always forwards to WAN IP
If I move the WAN IP to something else in the same subnet, Secondary IP port forwarding to the recently vacated IP works.
Which got me to think that only the primary WAN IP will properly perform ARP with the modem. Just adding Secondary IP will not cause the modem to recognize it. Of course all this goes away after I reset both the modem and the router and force to repopulate their tables from scratch.
Primary WAN IP port fowarding always works
Secondary IP port forwarding does not work
IP range port forwarding always forwards to WAN IP
If I move the WAN IP to something else in the same subnet, Secondary IP port forwarding to the recently vacated IP works.
Which got me to think that only the primary WAN IP will properly perform ARP with the modem. Just adding Secondary IP will not cause the modem to recognize it. Of course all this goes away after I reset both the modem and the router and force to repopulate their tables from scratch.
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