https://community.cisco.com/t5/network-security/is-fastpath-bi-directional/m-p/4087120#M1070288 <P>FTD, like an ASA, acts as a stateful firewall. So the return traffic for an existing allowed connection (fastpath or otherwise) is automatically allowed.</P> Sat, 16 May 2020 15:47:37 GMT Marvin Rhoads 2020-05-16T15:47:37Z https://community.cisco.com/t5/network-security/is-fastpath-bi-directional/m-p/4086879#M1070267 <P>If I create a rule that Fastpath's for example:</P><P>&nbsp;</P><P>Szone: INSIDE</P><P>Dzone: OUTSIDE</P><P>S: ANY</P><P><span class="lia-unicode-emoji" title=":anguished_face:">😧</span> 1.1.1.1</P><P>&nbsp;</P><P>Does return traffic from 1.1.1.1 to what initiates the connection get Fastpathed or do you need another rule to Fastpath the reverse traffic? Is that true for UDP traffic?</P> Fri, 15 May 2020 20:23:49 GMT https://community.cisco.com/t5/network-security/is-fastpath-bi-directional/m-p/4086879#M1070267 ryan14 2020-05-15T20:23:49Z https://community.cisco.com/t5/network-security/is-fastpath-bi-directional/m-p/4087120#M1070288 <P>FTD, like an ASA, acts as a stateful firewall. So the return traffic for an existing allowed connection (fastpath or otherwise) is automatically allowed.</P> Sat, 16 May 2020 15:47:37 GMT https://community.cisco.com/t5/network-security/is-fastpath-bi-directional/m-p/4087120#M1070288 Marvin Rhoads 2020-05-16T15:47:37Z