The RV082 can support a connection from a client with a dynamic IP address. The FQDN is actually required, but this is not significant since you can make it up. You just need to be sure to enter the same "text" for the FQDN on the client and on the gateway. I use the USER FQDN option since my IP address at home changes. Upgrade to the latest firmware on the RV082 if you haven't already and follow these steps to configure the RV082:
1. Login to the RV082
2. Click the VPN tab
3. Click the Add New Tunnel button
4. Under Client to Gateway, click Add Now
5. Select Group VPN
6. Enter a name in the Group Name box (this can be anything, it is only there so you can identify it among other connections)
7. Select the interface to which the client will connect (Probably WAN1)
8. For Local Security Group select Subnet
9. If you are using the default network settings, enter 192.168.1.0 for your IP Address and 255.255.255.0 for your subnet mask
10. For the Remote Client, select E-Mail Address
11. Make up an email address. The "user" of the email address will go in the box before the @ sign and the (made up) FQDN will go in the box after the @ sign
12. For the IPSec Setup, keep all of the settings as they are by default with the exception of the Preshared Key. For the Preshared Key, come up with a random string of characters. The longer the string of characters the better. You will need this string of characters, matching case, on the client when you set it up.
13. Click the advanced Button and select Aggressive Mode and Keep Alive.
14. Click Save Settings.
This should get the RV082 configured correctly. A dialog box will come up asking if you want to setup another tunnel, just click cancel. You're now ready to configure the client.
The setup for the client is a bit more tricky. I see you have chosen SSH Sentinel, that's a good choice. What version of this are you using? I'm using version 1.3.2. I'll go ahead and throw the settings up for that version. These steps assume that you have already installed SSH Sentinel and have restarted the computer after the setup process.
1. Right-click the SSH Sentinel icon in that is by the clock in the button right of your screen and select Run Policy Editor (with the left button).
2. Click the Key Management tab.
3. Under Host Key double click add.
4. Select Create a Pre-Shared Key and click next.
5. Enter a name for the key in the Name Box (this is just for you to identify the key). In the next two boxes, enter the string of characters that you came up with in step 12 of the RV082 setup (these must match exactly as they are entered in the RV082). Click Finish.
6. You should be back in the Key Management tab of the Policy Editor window. Double click on the key that was just created (it will have the name that you entered for it in step 5).
7. Click the Identity tab, and for Local Primary Identifier select Administrator Email. A box will appear below where you type the value for this setting. This is where you enter the email address that you made up in step 11 of the RV082 setup. For instance, you will enter something such as user@company.com in the box. This must match the setting that is in the RV082 that you configured in step 11 above)
8. Click OK.
9. You should be back in the Key Management tab of the Policy Editor window. Click on the Security Policy tab. Once there, click on the VPN connections icon and click Add.
10. I'm guessing that you want to enter the IP Address of the RV082, so click on the IP button next to the Gateway Name box and enter the IP Address of the RV082 (This will probably be the IP Address of the WAN1 port on the RV082).
11. Click the ... button to the right of the Remote Network box. Click New. Create a Network name for your own identification purposes. Assuming you're using the default settings in the RV082, enter 192.168.1.0 in the IP Address field, and enter 255.255.255.0 in the Subnet Mask field. Select OK.
12. From the Remote Network drop down box, select the name for the remote network that you just created in the previous step.
13. For the Authentication Key, select the name that you created for the Authentication Key in step 5.
14. Click Properties.
15. Click Settings under IPSec/IKE Proposal.
16. Under IKE Proposal, for Encryption algorithm select DES, for Integrity Function select MD5, for IKE Mode select Aggressive, for IKE group select Group 1. Under the IPSec Proposal, for Encryption algorithm select DES, for Integrity Function select HMAC-MD5, and for PFS group select Group 1. Click OK.
17. Click on the Advanced tab. Check Enable Network Address Translation Traversal. You can leave the Discover path maximum transfer unit checked. If you want to audit this rule, keep that option selected, though you can probably uncheck the option.
18. Click OK.
19. You should be back in the Add VPN connection. Click OK.
20. You should be back in the SSH Sentinel Policy Editor. Click OK.
Those steps should get you going on your client. To connect to the tunnel, right-click the SSH Sentinel icon by the clock, scroll up to Select VPN, then select the VPN to which you want to connect (this will either be the IP Address or FQDN of the RV082 as entered in step 10 above).
So, that's it. I hope I didn't forget anything there!! It's important to follow those steps exactly since the settings must match on the client and the gateway.
If you have questions be sure to post back... hope that helps
deeno