diff --git a/client/portstatsmodel.cpp b/client/portstatsmodel.cpp
index 3acd61d..f4eccc3 100644
--- a/client/portstatsmodel.cpp
+++ b/client/portstatsmodel.cpp
@@ -170,12 +170,6 @@ QVariant PortStatsModel::data(const QModelIndex &index, int role) const
             case e_STAT_BYTES_SENT_NIC:
                 return stats.tx_bytes_nic();
 #endif
-            // Sign Stats
-            case e_STAT_SIGN_FRAMES_RCVD:
-                return quint64(stats.sign().rx_pkts());
-            case e_STAT_SIGN_FRAMES_SENT:
-                return quint64(stats.sign().tx_pkts());
-            // TODO: Other sign stats
 
             case e_STAT_RX_DROPS : return quint64(stats.rx_drops());
             case e_STAT_RX_ERRORS: return quint64(stats.rx_errors());
diff --git a/client/portstatsmodel.h b/client/portstatsmodel.h
index bcd86b1..b4ab3c0 100644
--- a/client/portstatsmodel.h
+++ b/client/portstatsmodel.h
@@ -60,11 +60,6 @@ typedef enum {
     e_STAT_BYTES_SENT_NIC,
 #endif
 
-    // Sign Stats
-    e_STAT_SIGN_FRAMES_RCVD,
-    e_STAT_SIGN_FRAMES_SENT,
-    // TODO: Other sign stats
-
     // Rx Errors 
     e_STAT_RX_DROPS,
     e_STAT_RX_ERRORS,
@@ -99,9 +94,6 @@ static QStringList PortStatName = (QStringList()
     << "Bytes Sent (NIC)"
 #endif
 
-    << "(Sign) Frames Received"
-    << "(Sign) Frames Sent"
-
     << "Receive Drops"
     << "Receive Errors"
     << "Receive Fifo Errors"
diff --git a/common/protocol.proto b/common/protocol.proto
index a08307b..7a48f06 100644
--- a/common/protocol.proto
+++ b/common/protocol.proto
@@ -236,19 +236,6 @@ message PortState {
     optional bool is_capture_on = 3 [default = false];
 }
 
-message Stats {
-    // FIXME: change tag numbers?
-    optional uint64 rx_pkts = 11;
-    optional uint64 rx_bytes = 12;
-    optional uint64 rx_pps = 15;
-    optional uint64 rx_bps = 16;
-
-    optional uint64 tx_pkts = 21;
-    optional uint64 tx_bytes = 22;
-    optional uint64 tx_pps = 25;
-    optional uint64 tx_bps = 26;
-}
-
 message PortStats {
 
     required PortId    port_id = 1;
@@ -273,8 +260,6 @@ message PortStats {
     optional uint64 rx_errors = 101;
     optional uint64 rx_fifo_errors = 102;
     optional uint64 rx_frame_errors = 103;
-
-    optional Stats sign = 1000;
 }
 
 message PortStatsList {
diff --git a/server/abstractport.cpp b/server/abstractport.cpp
index 6f1c7c4..7762bf9 100644
--- a/server/abstractport.cpp
+++ b/server/abstractport.cpp
@@ -631,25 +631,6 @@ void AbstractPort::stats(PortStats *stats)
     stats->rxFrameErrors = (stats_.rxFrameErrors >= epochStats_.rxFrameErrors) ?
                         stats_.rxFrameErrors - epochStats_.rxFrameErrors :
                         stats_.rxFrameErrors + (maxStatsValue_ - epochStats_.rxFrameErrors);
-
-    // Sign stats
-    stats->sign.rxPkts = (stats_.sign.rxPkts >= epochStats_.sign.rxPkts) ?
-                        stats_.sign.rxPkts - epochStats_.sign.rxPkts :
-                        stats_.sign.rxPkts + (maxStatsValue_ - epochStats_.sign.rxPkts);
-    stats->sign.rxBytes = (stats_.sign.rxBytes >= epochStats_.sign.rxBytes) ?
-                        stats_.sign.rxBytes - epochStats_.sign.rxBytes :
-                        stats_.sign.rxBytes + (maxStatsValue_ - epochStats_.sign.rxBytes);
-    stats->sign.rxPps = stats_.sign.rxPps;
-    stats->sign.rxBps = stats_.sign.rxBps;
-
-    stats->sign.txPkts = (stats_.sign.txPkts >= epochStats_.sign.txPkts) ?
-                        stats_.sign.txPkts - epochStats_.sign.txPkts :
-                        stats_.sign.txPkts + (maxStatsValue_ - epochStats_.sign.txPkts);
-    stats->sign.txBytes = (stats_.sign.txBytes >= epochStats_.sign.txBytes) ?
-                        stats_.sign.txBytes - epochStats_.sign.txBytes :
-                        stats_.sign.txBytes + (maxStatsValue_ - epochStats_.sign.txBytes);
-    stats->sign.txPps = stats_.sign.txPps;
-    stats->sign.txBps = stats_.sign.txBps;
 }
 
 void AbstractPort::clearDeviceNeighbors()
diff --git a/server/abstractport.h b/server/abstractport.h
index a604bd2..7eb3996 100644
--- a/server/abstractport.h
+++ b/server/abstractport.h
@@ -36,19 +36,6 @@ class QIODevice;
 class AbstractPort
 {
 public:
-    struct Stats
-    {
-        quint64    rxPkts;
-        quint64    rxBytes;
-        quint64    rxPps;
-        quint64    rxBps;
-
-        quint64    txPkts;
-        quint64    txBytes;
-        quint64    txPps;
-        quint64    txBps;
-    };
-
     struct PortStats
     {
         quint64    rxPkts;
@@ -65,8 +52,6 @@ public:
         quint64    txBytes;
         quint64    txPps;
         quint64    txBps;
-
-        Stats      sign;
     };
 
     enum Accuracy
diff --git a/server/myservice.cpp b/server/myservice.cpp
index 334853f..2240168 100644
--- a/server/myservice.cpp
+++ b/server/myservice.cpp
@@ -504,7 +504,6 @@ void MyService::getStats(::google::protobuf::RpcController* /*controller*/,
         AbstractPort::PortStats stats;
         OstProto::PortStats     *s;
         OstProto::PortState     *st;
-        OstProto::Stats         *sign;
 
         portId = request->port_id(i).id();
         if ((portId < 0) || (portId >= portInfo.size()))
@@ -541,17 +540,6 @@ void MyService::getStats(::google::protobuf::RpcController* /*controller*/,
         s->set_rx_errors(stats.rxErrors);
         s->set_rx_fifo_errors(stats.rxFifoErrors);
         s->set_rx_frame_errors(stats.rxFrameErrors);
-
-        sign = s->mutable_sign();
-        sign->set_rx_pkts(stats.sign.rxPkts);
-        sign->set_rx_bytes(stats.sign.rxBytes);
-        sign->set_rx_pps(stats.sign.rxPps);
-        sign->set_rx_bps(stats.sign.rxBps);
-
-        sign->set_tx_pkts(stats.sign.txPkts);
-        sign->set_tx_bytes(stats.sign.txBytes);
-        sign->set_tx_pps(stats.sign.txPps);
-        sign->set_tx_bps(stats.sign.txBps);
     }
 
     done->Run();
diff --git a/server/pcaptransmitter.cpp b/server/pcaptransmitter.cpp
index 12df97d..a81ede9 100644
--- a/server/pcaptransmitter.cpp
+++ b/server/pcaptransmitter.cpp
@@ -78,11 +78,6 @@ void PcapTransmitter::useExternalStats(AbstractPort::PortStats *stats)
     txStats_.useExternalStats(stats);
 }
 
-void PcapTransmitter::useSignedStreams(bool enable)
-{
-    txStats_.useSignedStreams(enable);
-}
-
 void PcapTransmitter::start()
 {
     txThread_.start();
diff --git a/server/pcaptransmitter.h b/server/pcaptransmitter.h
index 83fd57f..3dc8eb9 100644
--- a/server/pcaptransmitter.h
+++ b/server/pcaptransmitter.h
@@ -43,8 +43,6 @@ public:
     void setHandle(pcap_t *handle);
     void useExternalStats(AbstractPort::PortStats *stats);
 
-    void useSignedStreams(bool enable);
-
     void start();
     void stop();
     bool isRunning();
diff --git a/server/pcaptxstats.cpp b/server/pcaptxstats.cpp
index 102df54..353ea9d 100644
--- a/server/pcaptxstats.cpp
+++ b/server/pcaptxstats.cpp
@@ -28,8 +28,6 @@ PcapTxStats::PcapTxStats()
     stats_ = new AbstractPort::PortStats;
     usingInternalStats_ = true;
 
-    usingSignedStreams_ = false;
-
     stop_ = false;
 }
 
@@ -52,11 +50,6 @@ void PcapTxStats::useExternalStats(AbstractPort::PortStats *stats)
     usingInternalStats_ = false;
 }
 
-void PcapTxStats::useSignedStreams(bool enable)
-{
-    usingSignedStreams_ = enable;
-}
-
 void PcapTxStats::start()
 {
     QThread::start();
@@ -83,15 +76,6 @@ void PcapTxStats::run()
         stats_->txPkts = txThreadStats_->pkts;
         stats_->txBytes = txThreadStats_->bytes;
 
-        // XXX: If port uses signed streams, we assume that all packets
-        // sent by txThread are signed packets => this requires us to
-        // set sign tx stats equal to tx stats followed by a clear stats
-        // whenever this setting changes
-        if (usingSignedStreams_) {
-            stats_->sign.txPkts = txThreadStats_->pkts;
-            stats_->sign.txBytes = txThreadStats_->bytes;
-        }
-
         if (stop_)
             break;
         QThread::msleep(1000);
diff --git a/server/pcaptxstats.h b/server/pcaptxstats.h
index 4025d57..ed134bb 100644
--- a/server/pcaptxstats.h
+++ b/server/pcaptxstats.h
@@ -36,8 +36,6 @@ public:
 
     void useExternalStats(AbstractPort::PortStats *stats);
 
-    void useSignedStreams(bool enable);
-
     void start();
     void stop();
 private:
@@ -48,7 +46,6 @@ private:
     bool usingInternalStats_;
     AbstractPort::PortStats *stats_;
 
-    volatile bool usingSignedStreams_;
     volatile bool stop_;
 };