I have used both of those products. I would love an Axis 2400 server as they are great products.
It sounds like you have the Axis Server setup, but if not here are some guidelines.
You need to assign an internal static IP address for the Axis server and not let your Linksys assign a DHCP address. This way you will not have to change your port forwarding settings in your Linksys router on chance the Axis gets its address changed if done dynamically.
I usually like to use the "ARP" method of assigning an IP address for the Axis products. Let's say you assigned the Axis server an internal address of 192.168.1.200. I would also use an uncommon port such as 3000 in lieu of the default port 80. Once you get your address setup, go to your web browser and type in that IP address. Log in using the default username and password, then click on the "ADMIN" button on the lower left. All of these instructions are in the manual of course and if you have any trouble let me know.
Their is a network settings menu once in the admin setup of the Axis. Notice of course that the IP address is what you assigned, but also note the "port" setting. Set this to say 3000 instead of its default 80.
Also, go to the user menu and add yourself as a user with read/write/admin rights. Remember this username and password.
Now save your settings and re-open the Internet Explorer window. Now type http://192.168.1.200:3000
and you should see the login screen appear. Log in with the username and password you created.
Now it's time to setup your Linksys WRT300N for Port Forwarding. Open the admin menu for your Linksys WRT300N router by typing http://192.168.1.1
and enter the PASSWORD for it. You will now see the setup menus.
Click on status and note your "Internet IP Address". This is the IP address that your service provider provided you (can change due to DHCP settings, more on this later). Write this number down.
Click on "Applications and Gaming", then on "Port Range Forwarding". You now need to forward to your Axis server whenever you enter the IP address you just wrote down above followed by :3000 (port for the Axis).
I entered settings for that in the screen shot below ("Mike's Axis" are the settings you need).
Click on "Save Settings" button towards the bottom of that screen.
Now whenever you go to a computer that is not on your internal network (i.e. work computer) just enter http://the
ip address you wrote down above:3000. Let's say the ip address you wrote down was 22.214.171.124. You would enter http://126.96.36.199:3000
from your work PC and it should to go your Axis server.
Now one caveat is if your service provider's address changes that they assigned to you! Then you would have to get the new IP address and enter that :3000 or use a service mentioned above such a dydns. Let's get this working first before going that route though.
I love Axis product and use them at work. I just wish I could afford them for my home use!
If you have any trouble, send me a PM and we will hook up.