Hi! Everyone. This is Jongwon Kim from Korea Telecom in seoul ,KOREA. We have a severe udp flooding form our server as follow. .Dec 7 10:53:15: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43307) -> x.x.x.x(50753), 1 packet .Dec 7 10:53:16: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43422) -> x.x.x.x(42084), 1 packet .Dec 7 10:53:17: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43539) -> x.x.x.x(47889), 1 packet .Dec 7 10:53:18: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43656) -> x.x.x.x(48642), 1 packet .Dec 7 10:53:19: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43773) -> x.x.x.x(60407), 1 packet .Dec 7 10:53:20: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(43890) -> x.x.x.x(48339), 1 packet .Dec 7 10:53:21: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(44001) -> x.x.x.x(56690), 1 packet .Dec 7 10:53:22: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(44117) -> x.x.x.x(18638), 1 packet .Dec 7 10:53:23: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(44234) -> x.x.x.x(12099), 1 packet .Dec 7 10:53:24: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(44350) -> x.x.x.x(18927), 1 packet .Dec 7 10:53:25: %SEC-6-IPACCESSLOGP: list 102 permitted udp 203.234.254.1(44467) -> x.x.x.x(61352), 1 packet We'd like to know how do i limit the udp port use above 40,000 in the host . Any comment will be appreciated . TIA -*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* KORNET Network Assistance Manager(Centural O&M Center) - Voice : 82-2-766-5902 -Fax : 82-2-766-5901 -E-Mail : knight@kix.net ====================================================================