Mark

This scenario shows how to mark diverted packets in order to distinguish locally generated traffic from proxied traffic.

Test Traffic-Proxy With Mark

Description

This example demonstrates how to mark packets crafted by the traffic-proxy service. A traffic policy with a special traffic selector is attached to the WAN interface to match only marked packets or ICMP messages.

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces eth0 traffic policy in TPROXY
set interfaces eth0 address 192.168.1.1/24
set interfaces eth0 tcp-mss 1400
set interfaces eth1.100 address 10.0.0.1/24
set interfaces eth1.100 tcp-mss 1400
set traffic policy TPROXY rule 5 selector TCP_TRAFFIC
set traffic policy TPROXY rule 5 action proxy tcp 3128
set traffic selector TCP_TRAFFIC rule 1 protocol tcp
set traffic selector TCP_TRAFFIC rule 1 destination port 80,443,8080,4430
set service traffic-proxy TRAFFIC_PROXY mode ssl
set service traffic-proxy TRAFFIC_PROXY port 3128
set service traffic-proxy TRAFFIC_PROXY x509 ca-cert running://test.crt
set service traffic-proxy TRAFFIC_PROXY x509 ca-key running://test.key
set service traffic-proxy TRAFFIC_PROXY mark 1234
set traffic policy MARKED_POL rule 1 selector MARKED_SEL
set traffic selector MARKED_SEL rule 1 protocol icmp
set traffic selector MARKED_SEL rule 2 mark 1234
set interfaces eth1.100 traffic policy out MARKED_POL

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.1.2/24
set protocols static route 0.0.0.0/0 next-hop 192.168.1.1

Step 3: Set the following configuration in DUT2:

set interfaces ethernet eth0 vif 100 address 10.0.0.2/24
set protocols static route 0.0.0.0/0 next-hop 10.0.0.1

Step 4: Ping IP address 10.0.0.2 from DUT1:

admin@DUT1$ ping 10.0.0.2 count 1 size 56 timeout 1

Step 5: Ping IP address 192.168.1.2 from DUT2:

admin@DUT2$ ping 192.168.1.2 count 1 size 56 timeout 1

Step 6: Initiate a ssl connection from DUT1 to DUT2 and try to send some messages between both endpoints

admin@DUT2$ monitor test connection server 443 ssl cert running://test.crt key running://test.key
admin@DUT1$ monitor test connection client 10.0.0.2 443 ssl source-port 1234

Step 7: Run command service traffic-proxy TRAFFIC_PROXY show stats at DUT0 and check if output does not match the following regular expressions:

intercepted\s+0\s+0

Step 8: Run command traffic policy MARKED_POL show at DUT0 and check if output matches the following regular expressions:

1\s+MARKED_SEL\s+[1-9]\d*\s+[1-9]\d*