First - Lets us concentrate on my Danish setup while I can´t try anything in Sweden when sitting here in Denmark ;)
You asked me to ping my cam in Denmark and that have I done this morning and it works very fine.
My problem with forwarding is, that I don´t work with these things and the last time I did forward my danish cam was in the old Linksys WRT54GL-EU router and at that time I could get a free guide how to do it and that was very easy (as shown earlier in this tread) Now I shall provide more details (I look so for me) and that is the problem!
I have also looked at the portforwarding.com and they ask for $ 29.95 so I have to be sure that their program will work with my 2 setups:
Denmark: Netgear R6300 router and locally a Linksys WVC54GCA webcam - cabled and with it´s own ip-adr. I can´t see any video/picture locally in Denmark
Sweden: Huawei B593s-22 router and over there locally a D-Link DCS-2121 webcam - cabled and with it´s own ip-adr. I can see video/Picture locally in Sweden.
But I could write to both:
1) New GFI LanGuard® 2014 (as you suggest)
and ask both if they can tell me if their software will help my with my exact problems.