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We have recently installed a Cisco ASA5510 (Sec +) and had it configured apples to apples with previous firewall, which was to allow email, HTTP, HTTPS and Terminal Services. We then setup a VPN in an effort to close off the Terminal Service port, so only access to terminal server is if connected to VPN...
So, everything works perfect on a PC, I installed Cisco VPN Client, connect to the vpn and can then connect to terminal server. If no VPN connection, cannot connect to terminal server. In both connected and disconnected states I can open browser and use web. BUT...
On a Mac, with OS X (brand new Mac Book Pro's al 64bit), once I connec to the VPN, I lose internet access, and cannot connect to nor ping any of the servers on my network, especially the terminal server. If I disconnect the VPN, I regain access to internet.
A little background information, our network is setup to use 192.168.1.x and while we are planning to change, while setting up the VPN, we realized that users on home networks are more than likely having the same IP scheme, so we setup the VPN to use 10.0.0.x Something tells me the Mac, when connected, is not receiving the 10.0.0.x address and there's an IP conflict. Could that be the case?
Either way, ANY help appreciated, I've also tried to connect with AnyConnect on the Mac, the connection works just fine, but once connected, no internet or access to terminal server.
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For your problem you did not tell us if you try to reach server by IP or name. If indeed you use name I suspect it's a split DNS problem. You should be able to enter DNS entries in the client but I'm not sure since I don't know the Cisco stuff. Don't use Cisco for VPN - too low end and too flaky for my taste.






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To return on the question:
There are several commands you need to check:
group-policy IPSEC-SSL_VPN_Policy attributes
split-tunnel-policy tunnelspecified
split-tunnel-network-list value LOCAL_splitTunnelACL
default-domain value domain.local
split-dns value domain.local
for both IPsec and SSL VPN (AnyConnect) policies. You can consult the Command reference guide for the right syntax.
I have users with Mac OS 32- and 64-bit OS as well as PC clients 32/64 using IPsec and AnyConnect VPN without any problems.
Being very new to the ASA, I'm a bit unsure what to do with your request. I have putty and can access the command line interface, but don't want to mess things up. Should I copy your commands and paste them into the command line for results?
One thing I should mention, when I am connected to AnyConnect, and I try to pull up an RDP session, I am trying both internal IP and computer name, same results, nothing...

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If you are more familiar with ASDM you can do the configuration there. Basically, you need split tunnelling and split dns.
Was more comfortable in ASDM, and when checking it appears split tunneling and split DNS is setup, when I checked the routing table on the Mac, shows 192.168.1.0
As for Error 51, it was incompatibility on Cisco client on Mac OS 10.6, got that working OK by manually adding the built-in Cisco IPSec client.






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Networking
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Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.