diff --git a/modules/net_sniff.go b/modules/net_sniff.go
index 82277db7..3d50f56b 100644
--- a/modules/net_sniff.go
+++ b/modules/net_sniff.go
@@ -39,13 +39,18 @@ func NewSniffer(s *session.Session) *Sniffer {
 	sniff.AddParam(session.NewStringParameter("net.sniff.regexp",
 		"",
 		"",
-		"If filled, only packets matching this regular expression will be considered."))
+		"If set, only packets matching this regular expression will be considered."))
 
 	sniff.AddParam(session.NewStringParameter("net.sniff.output",
 		"",
 		"",
 		"If set, the sniffer will write captured packets to this file."))
 
+	sniff.AddParam(session.NewStringParameter("net.sniff.source",
+		"",
+		"",
+		"If set, the sniffer will read from this pcap file instead of the current interface."))
+
 	sniff.AddHandler(session.NewModuleHandler("net.sniff stats", "",
 		"Print sniffer session configuration and statistics.",
 		func(args []string) error {
diff --git a/modules/net_sniff_context.go b/modules/net_sniff_context.go
index c71f324b..80996306 100644
--- a/modules/net_sniff_context.go
+++ b/modules/net_sniff_context.go
@@ -15,6 +15,7 @@ import (
 
 type SnifferContext struct {
 	Handle       *pcap.Handle
+	Source       string
 	DumpLocal    bool
 	Verbose      bool
 	Filter       string
@@ -30,10 +31,20 @@ func (s *Sniffer) GetContext() (error, *SnifferContext) {
 
 	ctx := NewSnifferContext()
 
-	if ctx.Handle, err = pcap.OpenLive(s.Session.Interface.Name(), 65536, true, pcap.BlockForever); err != nil {
+	if err, ctx.Source = s.StringParam("net.sniff.source"); err != nil {
 		return err, ctx
 	}
 
+	if ctx.Source == "" {
+		if ctx.Handle, err = pcap.OpenLive(s.Session.Interface.Name(), 65536, true, pcap.BlockForever); err != nil {
+			return err, ctx
+		}
+	} else {
+		if ctx.Handle, err = pcap.OpenOffline(ctx.Source); err != nil {
+			return err, ctx
+		}
+	}
+
 	if err, ctx.Verbose = s.BoolParam("net.sniff.verbose"); err != nil {
 		return err, ctx
 	}