diff --git a/tools/etcpmon/etcpmon_gui.c b/tools/etcpmon/etcpmon_gui.c
index bb036013..5750d8d1 100644
--- a/tools/etcpmon/etcpmon_gui.c
+++ b/tools/etcpmon/etcpmon_gui.c
@@ -1602,9 +1602,10 @@ void etcpmon_gui_update_socket_list(struct etcpmon_app* app,
         if (list[i].name[0] == '\0') continue;
 
         char display[256];
-        snprintf(display, sizeof(display), "%s%s%s:%u | %s policy=%s | mapping=%s inbound=%s | external=%s:%u",
+        snprintf(display, sizeof(display), "%s%s%s:%u | %s policy=%s | %s mapping=%s inbound=%s | external=%s:%u",
                  list[i].is_ipv6 ? "[" : "", list[i].ip, list[i].is_ipv6 ? "]" : "", list[i].port,
                  list[i].is_tcp ? "TCP" : "UDP", config_type_to_string(list[i].config_type),
+                 address_profile_source_name(list[i].source),
                  address_mapping_name(list[i].mapping), address_inbound_name(list[i].inbound),
                  list[i].nat_ip[0] ? list[i].nat_ip : "unknown", list[i].nat_port);
         SendMessageA(app->hListSockets, LB_ADDSTRING, 0, (LPARAM)display);
diff --git a/tools/etcpmon/etcpmon_protocol.h b/tools/etcpmon/etcpmon_protocol.h
index bb99bb7e..93327597 100644
--- a/tools/etcpmon/etcpmon_protocol.h
+++ b/tools/etcpmon/etcpmon_protocol.h
@@ -22,7 +22,7 @@ extern "C" {
  * Protocol Constants
  * ============================================================================ */
 
-#define ETCPMON_PROTOCOL_VERSION    2
+#define ETCPMON_PROTOCOL_VERSION    3
 
 /* Server config types (mirrored from config_parser.h) */
 #define CFG_SERVER_TYPE_UNKNOWN     0
@@ -126,7 +126,7 @@ struct etcpmon_socket_info {
     uint16_t port;                          /* Port number (host byte order) */
     uint8_t  is_ipv6;                       /* 1 = IPv6, 0 = IPv4 */
     uint8_t  config_type;                   /* CFG_SERVER_TYPE_PUBLIC/NAT/PRIVATE */
-    uint8_t  mapping, inbound;              /* ADDRESS_MAP_* / ADDRESS_IN_* */
+    uint8_t  mapping, inbound, source;      /* ADDRESS_MAP_* / ADDRESS_IN_* / ADDRESS_SOURCE_* */
     uint8_t  is_tcp;
     uint64_t generation, evidence_id, checked_at;
     char     nat_ip[46];                    /* Null-terminated NAT IP address string */