cli command to capture accepted traffic and dropped traffic.

Reply
L4 Transporter

cli command to capture accepted traffic and dropped traffic.

Can someone help me with command to capture accepted and dropped traffic through cli or through webui interface of firewall.

I tried command show log traffic dst/src/sport/dport   but looks like show log traffic in general does not provide good info.

Help appreciated.

Tags (1)
L0 Member

Re: cli command to capture accepted traffic and dropped traffic.

Hi,

You can find procedure here How to Run a Packet Capture

L4 Transporter

Re: cli command to capture accepted traffic and dropped traffic.

this is really helpful , but how can we check if packet is being dropped by firewall as above mentioned commands  are all packet captures, where can we find drop packet logs.

L4 Transporter

Re: cli command to capture accepted traffic and dropped traffic.

Hi

You have to secify files for every type of traffic (ie drop)

debug dataplane packet-diag set capture stage drop file <filename>

If this file has size >0 there is something dropped.  Please use Wildshark to open this file and investigate further.


Regards

Slawek

L7 Applicator

Re: cli command to capture accepted traffic and dropped traffic.

Hello Mandar,

Please find DOC Packet Capture, Debug Flow-basic and Counter Commands . The flow basic will give you the information about drop packet.

You can check the real time session in the CLI by using 'show session all filter source IP_ADD_OF_THE_TESTING_PC destination IP_ADD_OF_THE_DESTINATION'.


>  If there is an session exist for the same traffic,  then please apply  CLI command PAN> show session id XYZ   >>>>>>>> to get detailed information about that session, i.e NAT rule, security rule, ingress/egress interface etc.

verify the global counters, if a specific "DRP" counter is increasing rapidly. The command show counter global provides information about the processes/actions taken on the packets going through the device; if they are dropped, nat-ed, decrypted etc.  These counters are for all the traffic going through the device and are useful in troubleshooting issues; like poor performance, packet loss, latency etc. It is advised to use the command show counter global filter packet-filter yes delta yes in conjunction with filters to obtain meaningful data.

For more information, you can follow the DOC What is the Significance of Global Counters?

> You can enable FLOW BASIC feature to understand the exact reason behind the failure:

> debug dataplane packet-diag clear all

> debug dataplane packet-diag set filter match source  IP_ADD_OF_THE_TESTING_PC destination IP_ADD_OF_THE_DESTINATION

> debug dataplane packet-diag set filter match source IP_ADD_OF_THE_DESTINATION destination  IP_ADD_OF_THE_TESTING_PC

> debug dataplane packet-diag set log feature flow basic

> debug dataplane packet-diag set log feature tcp all

> debug dataplane packet-diag set filter on

> debug dataplane packet-diag set log on


~~~~~~~~~~~~~~~~ Initiate traffic through the PAN firewall/try to browse a website ~~~~~~~~~~~~~~~~~~~~~~~~~

> debug dataplane packet-diag set log off

> debug dataplane packet-diag aggregate-logs

> less mp-log pan_packetdiag_log.log

For more information, you can follow the DOC: Packet Capture, Debug Flow-basic and Counter Commands

Hope this helps.

Thanks

Highlighted
L6 Presenter

Re: cli command to capture accepted traffic and dropped traffic.

Hi Mandar,

Packet capture will provide information for Recieved, Transmitted and dropped packets. its a best way to view packets.

Let us know for additional information.

Regards,

Hardik shah

L3 Networker

Re: cli command to capture accepted traffic and dropped traffic.

Also with 6.1 it has a session end reason enhancement in the logs

L4 Transporter

Re: cli command to capture accepted traffic and dropped traffic.

Mandar.Kulkarni, hshah is correct, dropped packets are put in a separate pcap.

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!

The Live Community thanks you for your participation!