topic ICMP (dup) message in Network Security https://community.cisco.com/t5/network-security/icmp-dup-message/m-p/935185#M939441 <P>We just migrated a bunch of in-bound access rules from a Netscreen to a PIX 515 (v7.2). When several Linux servers ping devices on the internet they get back icmp (dup) messages. These hosts have the PIX set as their default gateway.</P><P>Has anyone seen this? Is there something on the PIX that we can do to supress the icmp (dup) replys? </P> Mon, 11 Mar 2019 12:29:49 GMT mvhurley9 2019-03-11T12:29:49Z ICMP (dup) message https://community.cisco.com/t5/network-security/icmp-dup-message/m-p/935185#M939441 <P>We just migrated a bunch of in-bound access rules from a Netscreen to a PIX 515 (v7.2). When several Linux servers ping devices on the internet they get back icmp (dup) messages. These hosts have the PIX set as their default gateway.</P><P>Has anyone seen this? Is there something on the PIX that we can do to supress the icmp (dup) replys? </P> Mon, 11 Mar 2019 12:29:49 GMT https://community.cisco.com/t5/network-security/icmp-dup-message/m-p/935185#M939441 mvhurley9 2019-03-11T12:29:49Z Re: ICMP (dup) message https://community.cisco.com/t5/network-security/icmp-dup-message/m-p/935186#M939443 <HTML><HEAD></HEAD><BODY><P>An additional comment on this. The devices that see these icmp (dup) messages have static translations and acl rules allowing in-bound connections. Other Linux devices on the local that do not have the statics and acls don't get the dups.</P></BODY></HTML> Fri, 11 Apr 2008 03:57:29 GMT https://community.cisco.com/t5/network-security/icmp-dup-message/m-p/935186#M939443 mvhurley9 2008-04-11T03:57:29Z