diff --git a/test/blackbox/common/BlackboxTestsSecurity.cpp b/test/blackbox/common/BlackboxTestsSecurity.cpp
index 6dac5477660..b54bd4edc9b 100644
--- a/test/blackbox/common/BlackboxTestsSecurity.cpp
+++ b/test/blackbox/common/BlackboxTestsSecurity.cpp
@@ -27,7 +27,6 @@
 #include <fastdds/rtps/common/EntityId_t.hpp>
 #include <fastdds/rtps/transport/shared_mem/SharedMemTransportDescriptor.hpp>
 #include <fastdds/rtps/transport/test_UDPv4TransportDescriptor.hpp>
-#include <fastdds/utils/IPFinder.hpp>
 #include <gtest/gtest.h>
 
 #include "../utils/filter_helpers.hpp"
@@ -5023,40 +5022,30 @@ TEST(Security, ValidateAuthenticationHandshakeProperties)
 // in PDPSimple answers back with the proxy data.
 TEST(Security, security_with_initial_peers_over_tcpv4_correctly_behaves)
 {
+    const uint16_t server_listening_port = global_port;
+
     // Create
     PubSubWriter<HelloWorldPubSubType> tcp_client("HelloWorldTopic_TCP");
     PubSubReader<HelloWorldPubSubType> tcp_server("HelloWorldTopic_TCP");
 
-    // Search for a valid WAN address
-    LocatorList_t all_locators;
-    Locator_t wan_locator;
-    IPFinder::getIP4Address(&all_locators);
-
-    for (auto& locator : all_locators)
-    {
-        if (!IPLocator::isLocal(locator))
-        {
-            wan_locator = locator;
-            break;
-        }
-    }
-
-    uint16_t server_listening_port = 11810;
-    wan_locator.port = server_listening_port;
-    wan_locator.kind = LOCATOR_KIND_TCPv4;
+    // Use localhost as initial peers
+    Locator_t peer_locator;
+    IPLocator::setIPv4(peer_locator, 127, 0, 0, 1);
+    peer_locator.port = server_listening_port;
+    peer_locator.kind = LOCATOR_KIND_TCPv4;
 
     auto tcp_client_transport_descriptor = std::make_shared<eprosima::fastdds::rtps::TCPv4TransportDescriptor>();
     LocatorList_t initial_peers;
-    initial_peers.push_back(wan_locator);
+    initial_peers.push_back(peer_locator);
     tcp_client.disable_builtin_transport()
             .add_user_transport_to_pparams(tcp_client_transport_descriptor)
             .initial_peers(initial_peers);
 
     auto tcp_server_transport_descriptor = std::make_shared<eprosima::fastdds::rtps::TCPv4TransportDescriptor>();
     tcp_server_transport_descriptor->listening_ports.push_back(server_listening_port);
-    IPLocator::copyIPv4(wan_locator, tcp_server_transport_descriptor->wan_addr);
+    IPLocator::copyIPv4(peer_locator, tcp_server_transport_descriptor->wan_addr);
 
-    std::cout << "SETTING WAN address to " <<  wan_locator << std::endl;
+    std::cout << "SETTING WAN address to " << peer_locator << std::endl;
 
     tcp_server.disable_builtin_transport()
             .add_user_transport_to_pparams(tcp_server_transport_descriptor);