diff --git a/README.rst b/README.rst
index 20fae2a6..485d71e6 100644
--- a/README.rst
+++ b/README.rst
@@ -124,6 +124,11 @@ Several methods have been added which are not present in psutil, but will provid
   - system wide stats on network protocols (i.e IP, TCP, UDP, etc.)
   - sourced from /proc/net/snmp
 
+- iptables nf_conntrack (linux only)
+
+  - system wide stats on netfilter conntrack module
+  - sourced from /proc/sys/net/netfilter/nf_conntrack_count
+
 Some codes are ported from Ohai. many thanks.
 
 
@@ -153,6 +158,7 @@ net_connections      x             x
 net_protocols        x
 net_if_addrs
 net_if_stats
+netfilter_conntrack  x
 ================= ====== ======= ====== =======
 
 Process class
diff --git a/net/net.go b/net/net.go
index feb5c388..addb4481 100644
--- a/net/net.go
+++ b/net/net.go
@@ -65,8 +65,8 @@ type NetInterfaceStat struct {
 }
 
 type NetFilterStat struct {
-	ConnTrackCount	int64	`json:"conntrackcount"`
-	ConnTrackMax	int64	`json:"conntrackmax"`
+	ConnTrackCount	int64	`json:"conn_track_count"`
+	ConnTrackMax	int64	`json:"conn_track_max"`
 }
 
 var constMap = map[string]int{
diff --git a/net/net_linux.go b/net/net_linux.go
index 058720a0..9e2d7403 100644
--- a/net/net_linux.go
+++ b/net/net_linux.go
@@ -165,8 +165,8 @@ func NetProtoCounters(protocols []string) ([]NetProtoCountersStat, error) {
 // the currently in use conntrack count and the max.
 // If the file does not exist or is invalid it will return nil.
 func NetFilterCounters() ([]NetFilterStat, error) {
-	countfile := "/proc/sys/net/netfilter/nf_conntrack_count"
-	maxfile := "/proc/sys/net/netfilter/nf_conntrack_max"
+    countfile := common.HostProc("sys/net/netfilter/nf_conntrack_count")
+    maxfile := common.HostProc("sys/net/netfilter/nf_conntrack_max")
 
 	count, err := common.ReadInts(countfile)