Cisco FTD – permit bpdu frames

In the old days of Cisco ASA transparent firewalls, there was an option to allow BPDU frames in access list. Therefore, bpdu frames were passing through the firewall even some rule later could override it. ASA ACL looked something like this. access-list acl-bpdu ethertype permit bpduaccess-group acl-bpdu in interface inside In the FTD there is no way to allow this using Access control policies. By default, BPDUs are forwarded for

Ping tricks

Change Ping Packet Size Win:     ping –l 1450 IP_ADDRESS Linux:  ping –s 1450 IP_ADDRESS Send 10 packets and stop Win:  ping –n 10 IP_ADDRESS Linux: ping –c 10 IP_ADDRESS Show ping statistics without stopping Linux ping :  Press Ctrl + |  (pipe) hostname:~ $ ping PING ( 56(84) bytes of data. 64 bytes from icmp_seq=0 ttl=117 time=193 ms 64 bytes from icmp_seq=2 ttl=117 time=192 ms 3/3