topic NTP through a Firewall Service Module? in Network Security https://community.cisco.com/t5/network-security/ntp-through-a-firewall-service-module/m-p/642302#M1030470 <P>I am querying a NTP router outside of a firewall interface, the firewall is a service module in a catalyst switch. I see the request hit the NTP router but no packets seem come back through the firewall. Any ideas would be helpful</P> Mon, 11 Mar 2019 09:12:23 GMT samwise_diver 2019-03-11T09:12:23Z NTP through a Firewall Service Module? https://community.cisco.com/t5/network-security/ntp-through-a-firewall-service-module/m-p/642302#M1030470 <P>I am querying a NTP router outside of a firewall interface, the firewall is a service module in a catalyst switch. I see the request hit the NTP router but no packets seem come back through the firewall. Any ideas would be helpful</P> Mon, 11 Mar 2019 09:12:23 GMT https://community.cisco.com/t5/network-security/ntp-through-a-firewall-service-module/m-p/642302#M1030470 samwise_diver 2019-03-11T09:12:23Z Re: NTP through a Firewall Service Module? https://community.cisco.com/t5/network-security/ntp-through-a-firewall-service-module/m-p/642303#M1030471 <HTML><HEAD></HEAD><BODY><P>are you allowing NTP replies back in ? You can user capture facility on FWSM to see the replies if any</P></BODY></HTML> Fri, 22 Dec 2006 22:50:56 GMT https://community.cisco.com/t5/network-security/ntp-through-a-firewall-service-module/m-p/642303#M1030471 varakantam 2006-12-22T22:50:56Z