| KB | 0000070 | |
| Dated | 21/01/10 | |
| Revision | 0.03 | |
Cisco ASA5500 Client VPN Access |
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| Problem | ||
Below is a walkthrough for setting up a client to gateway VPN Tunnel using a Cisco ASA appliance.This is done via the ASDM console. Though if (Like me) you prefer using the Command Line Interface I've put the commands at the end. It also uses the Cisco VPN client - the version used is v5 which is still in beta at the time of writing. |
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| Solution | ||
Step1 Configure the ASA5500 |
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1. Open up the ADSM console. > Click Wizards > VPN Wizard. |
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2. Select "Remote Access". > Next. |
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3. Select Cisco VPN Client. > Next. |
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4. Enter a Pre Shared Key e.g. thisisthepresharedkey > And then give the Tunnel group a name e.g. "RemoteVPN". > Next. |
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5. Select "Authenticate using the local user database". > Next. |
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6. Now create a user, for this exercise I've created a user called user1 with a password of password1 |
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7. Click Add. > Next. |
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8. Now we need to create some IP addresses that the remote clients will use when connected. > Click New |
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9. Give the Pool a name e.g. RemotePool and set the start and end IP addresses you want to lease (note these DONT have to be on the same network as your internal IP's - In fact, for auditing its good practice to make them different). > Enter a Subnet Mask. > OK. |
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10 Click Next. |
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11 Enter the details you want the remote clients to use while connected, DNS servers, WINS Servers and domain name. > Next. |
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12. Leave it on the defaults of 3DES, SHA and DH Group 2 (Note some Cisco VPN clients will not support AES). > Next |
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13. Again leave it on the default of 3DES and SHA. > Next. |
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14. You can choose what IP addresses you want the remote VPN clients to have access to, first change the dropdown to "Inside", here I want them to have access to the entire network behind the ASA so I will choose 10.254.254.0 with a mask of 255.255.255.0 > Click Add. > Next. NOTE If you do not tick the box to enable "Split Tunneling" then the client cannot browse the internet etc while connected via VPN. |
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15. Review the information at the end of the wizard. > Finish |
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16. Now you need to save the changes you have just made, From the ASDM Select File > "Save running configuration to flash" |
Step 2 Configure the Client VPN Software on the remote client. |
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Also See THIS VIDEO |
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1. I'll assume you have the software installed you can get it from two places, On the CD that came with the ASA, or download it direct from Cisco (NOTE this needs a valid Cisco CCO account and a service contract). > Click New. |
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2. Under connection entry give the connection a name e.g. "Remote VPN to Office" > Under "Host" enter the Public IP of the ASA (NOTE I've blurred this one out to protect my IP address). > Under "Name" enter the name you created earlier (Step 1 number 4) > Under Password use the password you created earlier (Step 1 number 4) and enter it a second time to confirm. NOTE these are NOT the usernames and passwords you created in Step 1 number 6. > Click Transport Tab. |
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3 Accept the defaults but tick "Allow LAN access if you want to be able to access YOUR drives etc from the network behind the ASA" > Save. |
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4. Select the Connection you have just created. > Connect. |
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5. Enter the username and password you created earlier (Step 1 Number 6) of user1 and password1. > OK. |
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6 After a few seconds (provided the details were all right) it will connect, hover over the padlock in your task tray and it should say "VPN Client - Connected". |
Create Additional Users on the ASA |
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1. Open the ASDM and navigate to Configuration > VPN > General > Users > Add. |
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2. Give the user a name > Enter and confirm a password > Set the Privilege Level to 0 > Then Select the VPN Policy Tab |
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3. > Under Group Policy untick "Inherit" > Select RemoteVPN (the policy you set in Step1 Number 4) > OK. |
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4. You will now see the user listed (Don't forget to save the settings, (File > "Save Running Configuration to Flash"). |
Do the same thing from command line |
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access-list splitvpn standard permit 10.254.254.0 255.255.255.0 |
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