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Agents
There are two agents for the Barracuda SSL VPN. The Barracuda SSL VPN Agent which secures unencrypted connections from the client
computer to the SSL VPN and the Server Agent which creates a SSL tunnel to relay traffic for resources which can not be directly accessed by
the SSL VPN. Both Agents create a SSL tunnels to the Barracuda SSL VPN, acting as a transparent proxy.
SSL VPN Agent
The Barracuda SSL VPN Agent is used to tunnel unencrypted connections. The traffic is intercepted and rerouted by the SSL VPN Agent installed
on the client computer and then sent through a SSL encrypted tunnel to the Barracuda SSL VPN.
For more information, see
.
How to Configure the SSL VPN Agent
Server Agent
The Barracuda Server Agent is installed inside of a network, which can not be reached directly by the Barracuda SSL VPN. The Server Agents
initiates a HTTPS connection from inside of the network, using port 443. It then waits for requests from the SSL VPN and forwards traffic for the
local resources. For example if you want to make the internal company wiki available via SSL VPN, the Server Agent is installed on a computer or
server in the same network. It will then act as a transparent proxy, relaying the information to the SSL VPN which delivers the content to the client.
The SSL VPN can use multiple Server Agent in different networks, using routes containing host patterns (e.g.,
) to decide which
*.example.com
Server Agent to contact for a particular resource. The whole process is completely transparent to the user.
For more information, see
How to Configure a Server Agent
How to Configure a Server Agent
The Barracuda Server Agent is used to proxy traffic for resources located in a network which can not be reached directly by the Barracuda SSL
VPN. For this example the client will request a web resource hosted on the
server in the intranet. The Barracuda SSL VPN will
a.example.com
use the server agent installed on one of the local servers in the network to connect to the
server and forward the traffic to the
a.example.com
client.
The SSL tunnel creates a secure tunnel into your network. It is important that users log out and do not leave their session unattended.
The tunnel will disconnect, if it is inactive for a configurable amount of time.