The various types of IP address conflicts discussed earlier are essentially eliminated. This eliminates problems with external addresses on the internal network as well as with NAT.īecause the client is assigned a unique IP during the initial IKE negotiation, the client's local IP address can be almost anything it needs to be.
#CHECK POINT VPN 1 SECUREMOTE SECURECLIENT WINDOWS#
The client uses one of these IP addresses for all communications to the encryption domain, which will be assigned to a virtual adapter that appears in your Windows configuration. The administrator can choose which IP addresses the firewall will assign or choose to obtain the IP address via an internal DHCP server. In Office Mode, the firewall assigns the client an IP address. You can also disconnect from the VPN domain easily.Ĭlient IP addresses assigned on authentication: As part of that process, you can specify which dial-up networking connection to bring up as well. You must explicitly tell SecureClient to connect to the VPN domain. Connect Mode acts a bit like dial-up networking?the interface is even similar. The client now provides a new way to initiate a VPN connection. Office Mode provides solutions to all of these issues. SecureClient 4.1 and earlier did not work in this configuration.Īt the end of the day, VPN access was more problematic for many people than dialing in. Furthermore, your client might be using IP address space your encryption domain contains. You might want to use SecuRemote to always talk to a firewall, regardless of whether or not you are in the internal network. Use of SecuRemote from within the encryption domain: In a Transparent mode configuration, the only way to "log out" of a site (i.e., to prevent the client from sending encrypted packets to the encryption domain) is to disable or remove the site from the configuration. In FireWall-1 4.1, there was no way to cleanly bring up dial-up networking and the VPN connection simultaneously.ĭisconnection from the encryption domain: In some instances, it is useful to allow a VPN connection only when dialed up to the Internet. Lack of integration with dial-up networking: IP Pool NAT partially helps, but again, it is subject to the limitations of NAT. It becomes especially difficult when trying to perform access control on items within the network. Routing of Internet addresses in the internal network:įor a variety of reasons, it is not always desirable to allow Internet IP addresses on the internal network. IP Pool NAT attempts to resolve this problem but breaks applications that aren't NAT friendly. In a VPN situation, it is vital to enter and exit the same set of firewalls.
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Most firewalls don't cope very well with asymmetric routing, even when VPN access is not involved. As a result, you might come in one gateway and go out the other. In particularly large networks that span multiple sites, there may be more than one way out of the internal network depending on where you are. What about when the 192.168.0.x network is used in your encryption domain? SecuRemote doesn't work in this configuration. The firewall doesn't deal with this very well and drops clients. What happens when two or more VPN clients use the same private address space? With a number of NAT router vendors choosing 192.168.0.x as their internal DHCP address range and most of them assigning 192.168.0.2 first, you end up with a lot of clients using the same address. If the client is sitting behind a NAT device, this is the client's nonroutable IP address. Packets appear to be sourced from the client's IP address. Once the VPN is established, the client may communicate with the encryption domain. It is "transparent" in the sense that no interaction with the SecuRemote application is required to bring up the VPN. In FireWall-1 4.1, a VPN client initiates a connection to the encryption domain simply by attempting to access the encryption domain. To understand why this is a big step forward, a bit of history is in order. An important enhancement to SecureClient is Office Mode, which allows you to assign your remote access client an IP address, DNS, and WINS information as if the client were on the local network.