If logging is enabled for a gateway firewall, gateway firewall packets will be logged.
The log file is /var/log/syslog. Each log message conforms to the syslog format, and consists of a syslog header and firewall-specific information. For more informaion about syslog, see Log Messages and Error Codes.
The firewall-specifc portion of a log message has the following fields:
Field | Notes |
---|---|
<VRF ID and interface UUID> | You can get this information about an interface by running a CLI command. For example:edge-1> get firewall interfaces Interface : 55f1af2f-4875-44e9-b0e0-59132ad7753d Type : UPLINK Sync enabled : true Name : Uplink_40_1 VRF ID : 1 ... |
Address family | Possible values: INET, INET6 |
Reason | Possible values:
|
Action | Possible values:
|
Rule ID | The firewall rule ID. |
Direction | Possible values: IN, OUT |
Packet length | Length in bytes. |
Protocol | Possible values: TCP, UDP, or PROTO (protocol number) |
Source IP address and port | For SNAT, this is the address before translation. |
Destination IP address and port | For DNAT, this is the address before translation. |
Examples of gateway firewall log messages for TCP:
<181>1 2020-09-21T22:14:12.080427+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match PASS 1005 OUT 60 TCP 1.1.1.10/45120->91.189.92.38/443 S <181>1 2020-09-21T22:14:19.963758+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET TERM PASS 1005 OUT TCP 1.1.1.10/45120->91.189.92.38/443
Examples of gateway firewall log messages for UDP:
<181>1 2020-09-21T22:05:05.686346+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match PASS 1005 IN 328 UDP 40.40.40.10/60613->1.1.1.10/42917 <181>1 2020-09-21T22:05:48.301116+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET TERM PASS 1005 IN UDP 40.40.40.10/60613->1.1.1.10/42917
Examples of gateway firewall log messages for PROTO:
<181>1 2020-09-21T21:54:38.047682+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match PASS 1005 IN 84 PROTO 1 40.40.40.10->1.1.1.10 <181>1 2020-09-21T21:54:45.036957+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET TERM PASS 1005 IN PROTO 1 40.40.40.10->1.1.1.10
Examples of gateway firewall log messages for SNAT:
<181>1 2020-09-21T22:57:24.203037+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match PASS 1005 OUT 60 TCP 1.1.2.10/49974->40.40.40.10/22 S <181>1 2020-09-21T22:57:24.203615+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match NAT 536870914 OUT 60 TCP 2.2.2.10/37305-OR 1.1.2.10/49974->40.40.40.10/22 S <181>1 2020-09-21T22:57:32.125757+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET TERM NAT 536870914 OUT TCP 2.2.2.10/37305-OR 40.40.40.10/22->1.1.2.10/49974
Examples of gateway firewall log messages for DNAT:
<181>1 2020-09-21T22:49:00.978192+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET reason-match RDR 536870913 IN 60 TCP 40.40.40.10/40082->10.10.10.1/22-OR 1.1.1.10/22 S <181>1 2020-09-21T22:50:01.915154+00:00 lur-svc.nsxedge-ob-16404613-1-gdefw NSX 2802 FIREWALL [nsx@6876 comp="nsx-edge" subcomp="datapathd.firewallpkt" level="INFO"] <1 55f1af2f487544e9:b0e059132ad7753d> INET TERM RDR 536870913 IN TCP 40.40.40.10/40082->10.10.10.1/22-OR 1.1.1.10/22