Starting an SSL-VPN CPS test

This test establishes a SSL-VPN tunnel connection and completes a full of HTTP transaction through it. It creates one HTTP(FTP) transaction per tunnel.

The tunnel is only established if configured in empty tunnel mode.

To start an SSL VPN CPS tunnel test:

1. Go to Cases > Performance Testing> VPN > SSLVPN > CPS to display the test case summary page.
2. Click + Create New to display the Select case options dialog box.

3. Configure the Inner Traffic and click OK to continue.

   HTTP CPS

   FTP

4. Set the server network to Peer Network.

   

   If FortiGate SSLVPN policy has disabled NAT mode, you need set the Internal IP assigned by FortiGate. If FortiGate SSLVPN policy has enabled NAT mode, you need to set a peer IP.

5. Set Specifics for Load and Client. See the table below.

6. Set Inner protocol case Specifics >HTTPCPS.

   Simulated Users

   Number of simusers in a Tunnel.

SSL-VPN CPS test case options

For details about the common options for SSL-VPN cases, see VPN test case common options.

Settings	Guidelines
Basic Information
Network Settings If you have selected a network config template, the network settings automatically inherit the configurations in the template. See Using network configuration templates for the description of network settings.
Load
Mode	Simuser: Simulated users. Simuser simulates a user processing through an actions list one at a time. It allows you to determine the maximum number of concurrent users your device, infrastructure, or system can handle. Connections/second: This mode simulates TCP connections, each of them containing up to hundreds of transactions. It's useful to test how many concurrent connections can be handled by your device. NOTE: If you want FortiTester to create connections as fast as possible, set Mode to Simuser. For more information, see What is the difference between Connections per Second and Simulated Users?
Tunnel Concurrent Connection	The total number of tunnels created in the Throughput case.
Ramp Up Time	The duration in seconds for which new sessions can be opened, attempting to reach the desired Connections per Second configured. (Range: 0 - 300). NOTE: If FortiTester cannot reach the Connections per Second configured during the specified Ramp Up Time, it will keep the highest CPS it reached during the Ramp Up Time.
Ramp Down Time	The duration in second during which the device ramps down the number of connections it is making. 0 will cause the FortiTester to cease generating sessions. (Range: 0 - 300).
VPN Gateway Port	Specify the VPN gateway port number.
Enable User Group	Enable to simulate multiple user names. This allows FortiView to populate with more rich user name information, for example. Go to Objects > User Groups > Create New to create a user group object. Click Create New to create multiple users/password pairs to the current User Group Object. In SSL-VPN (CPS/RPS/CC/Throughput) cases, click on the "Enable User Group" switch option button and select the User Group created in step 1.
VPN Username	Enter the VPN username.
VPN Password	Enter the VPN password.
Tunnel mode	Select TCP or UDP.
Client Profile
Client Close Mode	Select the connection close method: 3Way_Fin or Reset.
Quiet Shutdown	Enable to apply safe shutdown procedure to SSL connections by sending SSL alert to the peer.
Available SSL Versions	Select SSL versions. TLSv1.3 and other SSL versions are mutually exclusive. This means you can’t select TLSv1.3 at the same time with other SSL versions.
SSL Ciphers	Select one or more SSL ciphers from the list.
Session Resumption	Disabled (turns off session resumption). Resume Session by Ticket: Select this option to simulate a client presenting a ticket to a TLS server, having originated from that server, for the purpose of resuming a TLS session. Resume Session by Session: Select this option to simulate a user attempting to use the same SSL Session ID, initially negotiated with the server. This option applies only to TLS v1 and TLS v1.2. It does not apply to TLS v1.3.
Enable Client Certificate	Enable the client authentication for HTTPS cases.
Piggyback Get Requests	If enabled, this means an acknowledgment is sent on the data frame, not in an individual frame. Otherwise, it sends an ACK frame individually. This feature only works with get/post requests.
Client/Server TCP Options
TCP Receive Window	The receive window in which you want the TCP stack to send TCP segments. The receive window informs the peer how many bytes of data the stack is currently able to receive. The supplied value is used in all segments sent by the stack. The valid range is 0 to 65535.
Delayed Acks	Select to cause the TCP stack to implement the Delayed ACK strategy, which attempts to minimize the transmission of zero-payload ACK packets. Acknowledgments will be deferred and should be piggybacked on top of valid data packets. If successfully deferred, these acknowledgments are free, in the sense that they consume no additional bandwidth.
Delayed Ack Timeout	If you select Delayed ACKs, use this timeout value to specify the maximum time the TCP stack waits to defer ACK transmission. If this timer expires, the stack transmits a zero-payload acknowledgment.
Timestamps Option	Select to add a TCP time stamp to each TCP segment.
Enable Push Flag	Select to set the TCP PSH (push) flag in all TCP packets. This flag causes buffered data to be pushed to the receiving application. If deselected, the PSH flag is not set in any TCP packet.
SACK Option	Select to enable TCP Selective Acknowledgment Options(SACK).
Enable TCP Keepalive	Select to enable TCP Keep-alive Timer.
Keepalive Timeout	If you enable TCP Keepalive, use this timeout value to specify the maximum time to send your peer a keep-alive probe packet
Keepalive Probes	If you enable TCP Keepalive, use this value to specify the maximum probes to detect the broken connection.
Override Internal Timeout Calculation	Select to override the TCP stack calculation of the retransmission timeout value.
Retransmission Timeout	If you select Override Internal Timeout Calculation, use this value for the first transmission of a particular data or control packet; it is doubled for each subsequent retransmission.
Retries	The number of times a timed-out packet is retransmitted before aborting further retransmission. If the client does not receive a response after the configured number of retries have been attempted, the error is logged in the results. CSV file as a TCP timeout when a SYN or FIN is sent, and no SYN/ACK or FIN/ACK from the server is received.
FinACK Timer	This value measures the amount of time that a SimUser waits after it finishes its actions and before it directly breaks all of its TCP connections (that is, the time to wait to receive the LAST_ACK message for a FIN request). A value of 0 disables the timer. Note: Setting this timer can adversely affect TCP performance.
Client Network
Tunnel Mode	Select TCP or UDP.
Server Network
Network MTU	The maximum transmission unit size.