In a previous series of articles we looked at how to use Squid Proxy to overcome the five devices maximum limit when subscribed to the PrivateInternetAccess VPN anonymising service. While this is useful when needing to browse anonymously, it doesn’t help when using other non-HTTP protocols e.g. FTP, SMTP, SSH so to that end we present this PrivateInternetAccess SOCKS Proxy tutorial.
To this end, we need to employ a SOCKS (sockets) proxy: A SOCKS proxy is a general purpose proxy server that establishes a TCP connection to another server on behalf of a client and then routes all the traffic back and forth between the client and the server. It works for any kind of network protocol on any port.
In this tutorial we will be building on parts of the previous tutorial but using the Dante SOCKS proxy instead of Squid.
dante – to proxy specific traffic or applications through the VPN
Our network diagram for this example is as follows:
The client is sitting on the 172.16.16.0 network and accessing the proxy in the DMZ 192.168.101.0 subnet. Outgoing traffic will then be routed out through the VPN interface (tun0) encrypted and anonymised.
Fill in the blank. In New Mode HA, the internal cluster IP VIP address is 10.4.8.3. The internal interfaces on two members are 10.4.8.1 and 10.4.8.2 Internal host 10.4.8.108 pings 10.4.8.3, and receives replies.
Review the ARP table from the internal Windows host 10.4.8.108. According to the output, which member is the standby machine?
Fill in the blank. In New Mode HA, the internal cluster IP VIP address is 10.4.8.3. An internal host 10.4.8.108 successfully pings its Cluster and receives replies. Review the ARP table from the internal Windows host 10.4.8.108. Based on this information, what is the active cluster member’s IP address?
Fill in the blank. In Load Sharing Unicast mode, the internal cluster IP address is 10.4.8.3. The internal interfaces on two members are 10.4.8.1 and 10.4.8.2. Internal host 10.4.8.108 Pings 10.4.8.3, and receives replies. The following is the ARP table from the internal Windows host 10.4.8.108. Review the exhibit and type the IP address of the member serving as the pivot machine in the space below.
This short article describes the process of policy installation when it is initiated via SmartDashboard.
Policy installation flow:
Assuming the initiation was made by the SmartDashboard, as opposed to using command line options, such as fwm load (on Management Server) or fw fetch (on Security Gateway), the Check Point Management Interface (CPMI) policy installation command is sent to FWM process on the Management Server where the verification and compilation takes place.
FWM process forwards the command to CPD process for code generation and compilation.
CPD process invokes the Check Point Policy Transfer Agent (CPTA) command that sends the policy to all applicable Security Gateways.
CPD process on the Security Gateway receives the policy and verifies its integrity.
FWD process on the Security Gateway updates all of the user-mode processes responsible for enforcement aspects. These include VPND process for VPN issues, FWSSD processes for Security Server issues, and so on. Once complete, the CPD process then initiates the update for Check Point kernel.
The new policy is prepared, and the Check Point kernel halts the current traffic and starts queuing all incoming traffic.
The Atomic Load takes place. This process should take a fraction of a second.
Note: During Atomic Load, SecureXL is disabled and re-enabled afterwards.
The traffic queue is released, and all of the packets are handled by the new security policy.
