Virtual Server Packet Processing

Create additional Virtual Servers

Create a wildcard virtual server and pool, test and observe various traffic under different configurations to determine how virtual servers process new inbound connections. You will be using tcpdump from window1, virtual server statistics, as well as a browser to determine behavior.

Create wildcard_vs 10.1.10.100:* with a TCP profile, Automap and a pool named wildcard_pool with the following member 10.1.20.11:*

To create the wildcard pool, go to Local Traffic > Pools > Pool List and select Create.

Name	wildcard_pool
Address	10.1.20.11
Port	*

Hint

Don’t forget to Add the pool member to the New Members box before you hit Finished.

To create the wildcard virtual server, go to Local Traffic > Virtual Server and select Create.

Name	wildcard_vs_10_1_10_100
Destination	10.1.10.100
Service Port	*
Source Address Translation	Automap
Default Pool	wildcard_pool

Don’t forget to hit Finished.

You didn’t need to enter the source addresses allowed. Go to your new virtual server and look at the Source to see what the default default is source addresses allowed.

Testing Virtual Server Packet Processing Behavior

Many of your virtual servers have the same virtual address. You will now test various behaviors.

Clear virtual server stats.

Observe connection statistics (VS stats) after each of the following tasks.

Webmin is installed on the backend server. Browse to https://10.1.10.100:10000

Q1. Which VS is used for web traffic over port 10000?

FTP to 10.1.10.100

Q2. Which VS is used for FTP traffic?

Browse to http://10.1.10.100

Q3. Which VS is used for this web traffic the default HTTP port? What port was used?

Clear virtual server stats.

From the tcpdumps you can see you are accessing the virtual servers using a source IP of 10.1.10.6. Modify the www_vs to only allow connections from a Source of 10.1.10.10/32.

Browse to http://10.1.10.100

Observe connection statistics (VS stats)

Q4. Which VS is used for web traffic?

Clean up your modifications

Clear virtual server stats.

Modify www_vs to include the default Source of 0.0.0.0/0.