https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/3949587#M935867 <P>That is correct. Passive-interfaces are only supported on OSPFv3 configuration.&nbsp;</P> <P><EM>Thank you for rating helpful posts!</EM></P> Tue, 29 Oct 2019 03:15:05 GMT nspasov 2019-10-29T03:15:05Z https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/3948756#M935866 <P>For FTD, managed via FMC, looks like passive interface is only supported on OSPFv3. Regular OSPF doesn't have the option, is this correct?</P><P>So if I advertise a connected interface/network on the FTD into ospf via "Add Area" option, this potentially leaves the advertised network open to ospf peering (unless authentication used).&nbsp;</P> Fri, 21 Feb 2020 17:38:10 GMT https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/3948756#M935866 Madura Malwatte 2020-02-21T17:38:10Z https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/3949587#M935867 <P>That is correct. Passive-interfaces are only supported on OSPFv3 configuration.&nbsp;</P> <P><EM>Thank you for rating helpful posts!</EM></P> Tue, 29 Oct 2019 03:15:05 GMT https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/3949587#M935867 nspasov 2019-10-29T03:15:05Z https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/4916346#M1103949 <P>Is this still true in 7.3?&nbsp;&nbsp;</P> Fri, 01 Sep 2023 17:34:06 GMT https://community.cisco.com/t5/network-security/ftd-passive-interface-for-ospf/m-p/4916346#M1103949 tabularasa138 2023-09-01T17:34:06Z