IPMASQADM

["Jeffrey C. Lehman" <jeff.lehman@iname.com>]

I'm having a problem getting port forwarding working. This is what happens 
(as root):

ipmasqadm portfw -a -P tcp -L <local ip> <port> -R <remote IP> <port>

results in
portfw: setsockopt failed: Invalid argument

ipmasqadm portfw -l

results in:
portfw: setsockopt failed: Invalid argument
Could not open "/proc/net/ip_masq/portfw"
Could not open "/proc/net/ip_portfw"
Check if you have enabled portforwarding

I have a RedHat 6.2 system with a custom 2.2.14 kernel.  Masquerading works 
alright so I'm wondering whether I missed an option while I was compiling 
the kernel or whether I installed ipmasqadm wrong.

rpm -qa | grep ipmasqadm

results in
ipmasqadm-0.4.2-3

Are there any other tests to determine whether I compiled the kernel with 
this option?  Here is my /usr/src/linux/.config network section


#
# Networking options
#
CONFIG_PACKET=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_FIREWALL=y
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ROUTE_LARGE_TABLES=y
CONFIG_IP_ROUTE_NAT=y
# CONFIG_IP_PNP is not set
CONFIG_IP_FIREWALL=y
CONFIG_IP_FIREWALL_NETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_TRANSPARENT_PROXY=y
CONFIG_IP_MASQUERADE=y
CONFIG_IP_MASQUERADE_ICMP=y
CONFIG_IP_ROUTER=y
CONFIG_NET_IPIP=y
CONFIG_NET_IPGRE=y
CONFIG_IP_ALIAS=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_RARP=y
CONFIG_SKB_LARGE=y
# CONFIG_IPX is not set
# CONFIG_ATALK is not set


TIA,
Jeff