Problems compiling iptables and installing PPTP connection tracking on kernel linux-2.6.9

[Pablo Salinas]

Hi there,
	I'm completly new to iptables and patch-o-matic-ng. Nevertheless, I have experience compiling and installing the linux kernel. I want to install the patch-o-matic-ng-20050613 in order to activate the PPTP connection tracking on my linux firewall. I need it in order to be able to have multiple VPN clients to one Nated VPN server.

So, I've followed the patch-o-matic-ng install instructions. First, I've patched the linux kernel with patch-o-matic-ng-20050613. This worked fine. Although, when prompted if I wanted to install the pptp-conntrack-nat option, I answered yes, on the kernel .config file, the option CONFIG_IP_NF_PPTP wasn't added. The only option that's similar that I've found was the CONFIG_IP_NF_CONNTRACK option, the one is set to "m".

Anyway, after patching my kernel with the patch-o-matic code, I've followed the second step provided by path-o-matic README file. That is to recompile the ip-tables code. I've tried both with iptables-1.3.1 and iptables-1.2.11, and on both I get the same error message:

[root at porthable-switch iptables-1.2.11]# make KERNEL_DIR=/usr/src/linux
Extensions found: IPv4:addrtype IPv4:comment IPv4:recent IPv6:ah IPv6:esp IPv6:frag IPv6:ipv6header IPv6:hbh IPv6:dst IPv6:rt
cc -O2 -Wall -Wunused -I/usr/src/linux/include -Iinclude/ -DIPTABLES_VERSION=\"1.2.11\"  -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/include -Iinclude/ -DIPTABLES_VERSION=\"1.2.11\"  -fPIC -o extensions/libipt_connlimit_sh.o -c extensions/libipt_connlimit.c
In file included from /usr/src/linux/include/asm/byteorder.h:57,
                 from /usr/src/linux/include/linux/netfilter_ipv4/ip_conntrack_proto_gre.h:3,
                 from /usr/src/linux/include/linux/netfilter_ipv4/ip_conntrack.h:54,
                 from extensions/libipt_connlimit.c:9:
/usr/src/linux/include/linux/byteorder/little_endian.h:43: error: syntax error before "__cpu_to_le64p"
/usr/src/linux/include/linux/byteorder/little_endian.h:44: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_le64p':
/usr/src/linux/include/linux/byteorder/little_endian.h:45: error: `__le64' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h:45: error: (Each undeclared identifier is reported only once
/usr/src/linux/include/linux/byteorder/little_endian.h:45: error: for each function it appears in.)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:47: warning: type defaults to `int' in declaration of `__le64'
/usr/src/linux/include/linux/byteorder/little_endian.h:47: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__le64_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:49: error: `p' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:51: error: syntax error before "__cpu_to_le32p"
/usr/src/linux/include/linux/byteorder/little_endian.h:52: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_le32p':
/usr/src/linux/include/linux/byteorder/little_endian.h:53: error: `__le32' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:55: warning: type defaults to `int' in declaration of `__le32'
/usr/src/linux/include/linux/byteorder/little_endian.h:55: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__le32_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:57: error: `p' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:59: error: syntax error before "__cpu_to_le16p"
/usr/src/linux/include/linux/byteorder/little_endian.h:60: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_le16p':
/usr/src/linux/include/linux/byteorder/little_endian.h:61: error: `__le16' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:63: warning: type defaults to `int' in declaration of `__le16'
/usr/src/linux/include/linux/byteorder/little_endian.h:63: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__le16_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:65: error: `p' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:67: error: syntax error before "__cpu_to_be64p"
/usr/src/linux/include/linux/byteorder/little_endian.h:68: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_be64p':
/usr/src/linux/include/linux/byteorder/little_endian.h:69: error: `__be64' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h:69: error: syntax error before "__swab64p"
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:71: warning: type defaults to `int' in declaration of `__be64'
/usr/src/linux/include/linux/byteorder/little_endian.h:71: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__be64_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:73: error: `p' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:75: error: syntax error before "__cpu_to_be32p"
/usr/src/linux/include/linux/byteorder/little_endian.h:76: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_be32p':
/usr/src/linux/include/linux/byteorder/little_endian.h:77: error: `__be32' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h:77: error: syntax error before "__swab32p"
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:79: warning: type defaults to `int' in declaration of `__be32'
/usr/src/linux/include/linux/byteorder/little_endian.h:79: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__be32_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:81: error: `p' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:83: error: syntax error before "__cpu_to_be16p"
/usr/src/linux/include/linux/byteorder/little_endian.h:84: warning: return type defaults to `int'
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__cpu_to_be16p':
/usr/src/linux/include/linux/byteorder/little_endian.h:85: error: `__be16' undeclared (first use in this function)
/usr/src/linux/include/linux/byteorder/little_endian.h:85: error: syntax error before "__swab16p"
/usr/src/linux/include/linux/byteorder/little_endian.h: At top level:
/usr/src/linux/include/linux/byteorder/little_endian.h:87: warning: type defaults to `int' in declaration of `__be16'
/usr/src/linux/include/linux/byteorder/little_endian.h:87: error: syntax error before '*' token
/usr/src/linux/include/linux/byteorder/little_endian.h: In function `__be16_to_cpup':
/usr/src/linux/include/linux/byteorder/little_endian.h:89: error: `p' undeclared (first use in this function)
make: *** [extensions/libipt_connlimit_sh.o] Error 1


Please, somebody give me a hint on what I'm doing wrong or if there's a more simple way of having the PPTP connection tracking on my firewall.

Thanks in advance.

regards,
	Pablo Salinas


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