Cisco VPN

Cisco VPN client a/o 13Apr2010 (choose one):
Windows Version 5.0.07.0290 (32-Bit)
Windows Version 5.0.07.0290 (64-Bit)
Linux Version x86_64-4.8.02.0030
Mac Version 4.9.01.0100
Solaris Version 4.6.02.0030

The install may hang if the network interface is connected during the actual installation. Disconnect the Ethernet cable and or the Wireless LAN network interface after the download, before you run the install for best results.

Windows firewall may need three ports open for the VPN to run reliably.

• TCP 10000
• UDP 62515
• UDP 4500

You can download this file to open the ports for you. After downloading the zip file, extract the contents and run the batch file included in the archive. You will be prompted to run the file or cancel. Open_VPN_SP2_ports.zip

What other ports might I need to open to permit VPN traffic?
For PPTP VPN connections, you need to open TCP port 1723 (for PPTP tunnel maintenance traffic). PPTP also uses IP port 47 for tunneling data. Port 47 is designed for "General Routing Encapsulation" or GRE packets.
For L2TP VPN connections, you need to open UDP port 500 for Internet Key Exchange (IKE) traffic and UDP port 1701 for L2TP traffic.

IPSec over TCP enables a VPN Client to operate in an environment in which standard Encapsulating Security Protocol (ESP, Protocol 50) or Internet Key Exchange (IKE, User Datagram Protocol (UDP) 500) cannot function, or can function only with modification to existing firewall rules. IPSec over TCP encapsulates both the IKE and IPSec protocols within a TCP packet, and it enables secure tunneling through both Network Address Translation (NAT) and Port Address Translation (PAT) devices and firewalls. IPSec over TCP does not work with proxy-based firewalls.

Apple iTunes - It has been reported that iTunes and Cisco VPN have a conflict. It would be best if you uninstall iTunes and Cisco VPN, reboot, install Cisco VPN and test.

ATT Broadband Wireless - Does not work with Cisco VPN