Hi all, I want to use netmeeting over an iptables firewal version 1.2.3 ( redhat 7.2, kernel 2.4 ) I use this command to update iptables : # cvs -d :pserver:cvs@xxxxxxxxxxxxxxxxxxxxx:/cvspublic login # cvs -d :pserver:cvs@xxxxxxxxxxxxxxxxxxxxx:/cvspublic co netfilter/userspace netfilter/patch-o-matic And to make dependecies : # cd /usr/src/linux/ # make dep And cd ton ~/netfilter/patch-o-matic/ : ./runme extra and # ./runme --batch extra/h323-conntrack-nat.patch After that, i add H323 module to kernel :# make menuconfig And compile iptables : # cd ~/netfilter/userspace/ # make all install So i obtain this message : Making dependencies: please wait... cc -O2 -Wall -Wunused -I/usr/src/linux-2.4.7-10/include -Iinclude/ -DIPTABLES_VERSION=\"1.2.7a\" -fPIC -o extensions/libipt_ah_sh.o -c extensions/libipt_ah.c ld -shared -o extensions/libipt_ah.so extensions/libipt_ah_sh.o cc -O2 -Wall -Wunused -I/usr/src/linux-2.4.7-10/include -Iinclude/ -DIPTABLES_VERSION=\"1.2.7a\" -fPIC -o extensions/libipt_conntrack_sh.o -c extensions/libipt_conntrack.c In file included from extensions/libipt_conntrack.c:14: include/linux/netfilter_ipv4/ipt_conntrack.h:28: `IP_CT_DIR_MAX' undeclared here (not in a function) include/linux/netfilter_ipv4/ipt_conntrack.h:29: `IP_CT_DIR_MAX' undeclared here (not in a function) include/linux/netfilter_ipv4/ipt_conntrack.h:29: `IP_CT_DIR_MAX' undeclared here (not in a function) extensions/libipt_conntrack.c: In function `parse_status': extensions/libipt_conntrack.c:103: `IPS_EXPECTED' undeclared (first use in this function) extensions/libipt_conntrack.c:103: (Each undeclared identifier is reported only once extensions/libipt_conntrack.c:103: for each function it appears in.) extensions/libipt_conntrack.c:105: `IPS_SEEN_REPLY' undeclared (first use in this function) extensions/libipt_conntrack.c:107: `IPS_ASSURED' undeclared (first use in this function) extensions/libipt_conntrack.c: In function `parse': extensions/libipt_conntrack.c:202: `IP_CT_DIR_ORIGINAL' undeclared (first use in this function) extensions/libipt_conntrack.c:259: `IP_CT_DIR_REPLY' undeclared (first use in this function) extensions/libipt_conntrack.c: In function `print_status': extensions/libipt_conntrack.c:364: `IPS_EXPECTED' undeclared (first use in this function) extensions/libipt_conntrack.c:368: `IPS_SEEN_REPLY' undeclared (first use in this function) extensions/libipt_conntrack.c:372: `IPS_ASSURED' undeclared (first use in this function) extensions/libipt_conntrack.c: In function `matchinfo_print': extensions/libipt_conntrack.c:420: `IP_CT_DIR_ORIGINAL' undeclared (first use in this function) extensions/libipt_conntrack.c:440: `IP_CT_DIR_REPLY' undeclared (first use in this function) make: *** [extensions/libipt_conntrack_sh.o] Error 1 Is there any probleme, and how can i delete the old version of iptables. Thanks.