https://community.cisco.com/t5/network-security/forward/m-p/3314674#M926087 Hi,<BR /><BR />You can use tcpdump with interface, port and IP filter to see traffic between sensor and FMC.<BR />Don't know the interface name in FS4000 but in a FMC I can use " sudo tcpdump -i eth0 port 8305" to see the traffic between FMC and sensor.<BR /><BR /><BR />br, Micke Fri, 19 Jan 2018 17:39:00 GMT mikael.lahtela 2018-01-19T17:39:00Z https://community.cisco.com/t5/network-security/forward/m-p/3313597#M926085 <P>We have a Firesight Management center(FS4000 v5.4.1) through which we are managing Multiple sourcefire sensors (ASA5516 - V5.4.1 and ASA5525 - V5.4.0). Sometimes we are facing issue with receiving the packets from these sensors. How do we check the sensor interface status from Defence center and what is command to check packet flowing from&nbsp;different sensor in <SPAN>Defence center.</SPAN></P> Fri, 21 Feb 2020 15:09:46 GMT https://community.cisco.com/t5/network-security/forward/m-p/3313597#M926085 susinkumar 2020-02-21T15:09:46Z https://community.cisco.com/t5/network-security/forward/m-p/3314674#M926087 Hi,<BR /><BR />You can use tcpdump with interface, port and IP filter to see traffic between sensor and FMC.<BR />Don't know the interface name in FS4000 but in a FMC I can use " sudo tcpdump -i eth0 port 8305" to see the traffic between FMC and sensor.<BR /><BR /><BR />br, Micke Fri, 19 Jan 2018 17:39:00 GMT https://community.cisco.com/t5/network-security/forward/m-p/3314674#M926087 mikael.lahtela 2018-01-19T17:39:00Z