A query about Time Capsule, Ethernet, and DSL modems...

When I originally set up my modem, I used the network assistant and it seemed to "auto-connect", where the assistant tells you that your ISP "may allow you" etc. This was done with the ethernet cable as Modem to Macbook Pro. Then when I purchased a TC, I simply connected the ethernet cable to the TC and let Airport Utility set up a wireless network.
All was fine, until I was trying to ensure my security was half-decent. I changed a few settings in the TC, and then spent an afternoon trying to get my MBP to "see" the wireless network. I got that managed as well.
What's confusing me is this, and I hope someone can help me and explain it like I'm a 5-year-old.
1. In speaking with the ISP tech support, they seemed pretty sure I had to enter specific DCHP, DNS, etc. values in their fields, yet with the network assistant, it seemed to do this not only on its own, but with different values (numbers) then the one tech support told me to use, including an assigned "public" 192 IP address.
2. Moreover, the ISP told me I should use PPPoE, yet the network assistant seemed just fine with Ethernet and DCHP.
3. My ethernet IP address (System preferences/Network) is different from my Airport IP address. Is this normal?
4. Strangely, when I connect another ethernet cable from the TC ethernet out port to the MBP (I was attempting a quicker Time Machine incremental back up), and turned Airport off (as an experiment), I still have internet connectivity. I thought TC ethernet out to MBP would only be for disk data transfer. Is this normal? If I have Airport "ON", would that cable then only be used for data transfer?
5. I have the TC in Bridge Mode, with Access Control to "Not Enabled". I originally had my MBP and iPod Touch MAC addresses added to Access Control, until I read that this doesn't really help with security. As it stands now, I increased my WPA2 password from an easy to remember one to a random 25 character one. Basically, I am hoping someone can tell me the settings I should use (with detail) to make both the network settings AND the wireless network as safe as possible without having a computer science degree.
Additional information: I only use my MBP and iPod Touch, and the wireless network is only for my use. No guests whatsoever. I do have a usb printer connected to the TC. The modem has a wireless "WLAN" feature which I have turned off since I have the TC. For my email accounts, I have the correct ports entered, as far as I can tell and as far as I've been told by those providers. I occasionally use Acquisition (not sure how safe it is security wise), and I'm often online playing Call of Duty 4 (wirelessly). I think that all I can think of that's important.
I really appreciate everyone's comments and guidance.

4. Strangely, when I connect another ethernet cable from the TC ethernet out port to the MBP (I was attempting a quicker Time Machine incremental back up), and turned Airport off (as an experiment), I still have internet connectivity. I thought TC ethernet out to MBP would only be for disk data transfer. Is this normal? If I have Airport "ON", would that cable then only be used for data transfer?
Whichever connection is toward the top of the list in System Preferences-> Network preference pane is the one which will be used.
5. I have the TC in Bridge Mode, with Access Control to "Not Enabled". I originally had my MBP and iPod Touch MAC addresses added to Access Control, until I read that this doesn't really help with security. As it stands now, I increased my WPA2 password from an easy to remember one to a random 25 character one. Basically, I am hoping someone can tell me the settings I should use (with detail) to make both the network settings AND the wireless network as safe as possible without having a computer science degree.
WPA2 with a long non-dictionary password is the best wireless security.
2. Moreover, the ISP told me I should use PPPoE, yet the network assistant seemed just fine with Ethernet and DCHP.
If your ISP uses PPPoE for Internet connections, the device connecting directly to the DSL modem should be configured to use PPPoE.
3. My ethernet IP address (System preferences/Network) is different from my Airport IP address. Is this normal?
Yes

Similar Messages

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