diff --git a/app/data/compose/docker-compose-mobymask-app.yml b/app/data/compose/docker-compose-mobymask-app.yml
index d43e6b44..7d41264a 100644
--- a/app/data/compose/docker-compose-mobymask-app.yml
+++ b/app/data/compose/docker-compose-mobymask-app.yml
@@ -13,6 +13,7 @@ services:
       CERC_DEPLOYED_CONTRACT: ${CERC_DEPLOYED_CONTRACT}
       CERC_APP_WATCHER_URL: ${CERC_APP_WATCHER_URL}
       CERC_RELAY_NODES: ${CERC_RELAY_NODES}
+      CERC_DENY_MULTIADDRS: ${CERC_DENY_MULTIADDRS}
       CERC_BUILD_DIR: "@cerc-io/mobymask-ui/build"
     working_dir: /scripts
     command: ["sh", "mobymask-app-start.sh"]
@@ -44,6 +45,7 @@ services:
       CERC_DEPLOYED_CONTRACT: ${CERC_DEPLOYED_CONTRACT}
       CERC_APP_WATCHER_URL: ${CERC_APP_WATCHER_URL}
       CERC_RELAY_NODES: ${CERC_RELAY_NODES}
+      CERC_DENY_MULTIADDRS: ${CERC_DENY_MULTIADDRS}
       CERC_BUILD_DIR: "@cerc-io/mobymask-ui-lxdao/build"
     working_dir: /scripts
     command: ["sh", "mobymask-app-start.sh"]
diff --git a/app/data/compose/docker-compose-peer-test-app.yml b/app/data/compose/docker-compose-peer-test-app.yml
index f2a22675..f1f5e475 100644
--- a/app/data/compose/docker-compose-peer-test-app.yml
+++ b/app/data/compose/docker-compose-peer-test-app.yml
@@ -10,6 +10,7 @@ services:
     environment:
       CERC_SCRIPT_DEBUG: ${CERC_SCRIPT_DEBUG}
       CERC_RELAY_NODES: ${CERC_RELAY_NODES}
+      CERC_DENY_MULTIADDRS: ${CERC_DENY_MULTIADDRS}
     command: ["sh", "test-app-start.sh"]
     volumes:
       - ../config/wait-for-it.sh:/scripts/wait-for-it.sh
diff --git a/app/data/config/watcher-mobymask-v2/mobymask-app-start.sh b/app/data/config/watcher-mobymask-v2/mobymask-app-start.sh
index 9f343340..6eeb5c1a 100755
--- a/app/data/config/watcher-mobymask-v2/mobymask-app-start.sh
+++ b/app/data/config/watcher-mobymask-v2/mobymask-app-start.sh
@@ -7,6 +7,7 @@ fi
 CERC_CHAIN_ID="${CERC_CHAIN_ID:-${DEFAULT_CERC_CHAIN_ID}}"
 CERC_DEPLOYED_CONTRACT="${CERC_DEPLOYED_CONTRACT:-${DEFAULT_CERC_DEPLOYED_CONTRACT}}"
 CERC_RELAY_NODES="${CERC_RELAY_NODES:-${DEFAULT_CERC_RELAY_NODES}}"
+CERC_DENY_MULTIADDRS="${CERC_DENY_MULTIADDRS:-${DEFAULT_CERC_DENY_MULTIADDRS}}"
 CERC_APP_WATCHER_URL="${CERC_APP_WATCHER_URL:-${DEFAULT_CERC_APP_WATCHER_URL}}"
 
 # If not set (or []), check the mounted volume for relay peer id
@@ -37,5 +38,6 @@ yq -n ".address = env(CERC_DEPLOYED_CONTRACT)" > /config/config.yml
 yq ".watcherUrl = env(CERC_APP_WATCHER_URL)" -i /config/config.yml
 yq ".chainId = env(CERC_CHAIN_ID)" -i /config/config.yml
 yq ".relayNodes = strenv(CERC_RELAY_NODES)" -i /config/config.yml
+yq ".denyMultiaddrs = strenv(CERC_DENY_MULTIADDRS)" -i /config/config.yml
 
 /scripts/start-serving-app.sh
diff --git a/app/data/config/watcher-mobymask-v2/mobymask-params.env b/app/data/config/watcher-mobymask-v2/mobymask-params.env
index 6d1bf063..39d55016 100644
--- a/app/data/config/watcher-mobymask-v2/mobymask-params.env
+++ b/app/data/config/watcher-mobymask-v2/mobymask-params.env
@@ -24,3 +24,6 @@ DEFAULT_CERC_CHAIN_ID=42069
 
 # Set of relay nodes to be used by web-apps
 DEFAULT_CERC_RELAY_NODES=[]
+
+# Set of multiaddrs to be avoided while dialling
+DEFAULT_CERC_DENY_MULTIADDRS=[]
diff --git a/app/data/config/watcher-mobymask-v2/test-app-config.json b/app/data/config/watcher-mobymask-v2/test-app-config.json
index cce15fd8..a0baf9c6 100644
--- a/app/data/config/watcher-mobymask-v2/test-app-config.json
+++ b/app/data/config/watcher-mobymask-v2/test-app-config.json
@@ -1,6 +1,7 @@
 {
   "relayNodes": [],
   "peer": {
+    "denyMultiaddrs": [],
     "enableDebugInfo": true
   }
 }
diff --git a/app/data/config/watcher-mobymask-v2/test-app-start.sh b/app/data/config/watcher-mobymask-v2/test-app-start.sh
index 42e4397d..aeeb02d3 100755
--- a/app/data/config/watcher-mobymask-v2/test-app-start.sh
+++ b/app/data/config/watcher-mobymask-v2/test-app-start.sh
@@ -5,6 +5,7 @@ if [ -n "$CERC_SCRIPT_DEBUG" ]; then
 fi
 
 CERC_RELAY_NODES="${CERC_RELAY_NODES:-${DEFAULT_CERC_RELAY_NODES}}"
+CERC_DENY_MULTIADDRS="${CERC_DENY_MULTIADDRS:-${DEFAULT_CERC_DENY_MULTIADDRS}}"
 
 # If not set (or []), check the mounted volume for relay peer id
 if [ -z "$CERC_RELAY_NODES" ] || [ "$CERC_RELAY_NODES" = "[]" ]; then
@@ -16,5 +17,6 @@ echo "Using CERC_RELAY_NODES $CERC_RELAY_NODES"
 
 # Use yq to create config.yml with environment variables
 yq -n ".relayNodes = strenv(CERC_RELAY_NODES)" > /config/config.yml
+yq ".denyMultiaddrs = strenv(CERC_DENY_MULTIADDRS)" -i /config/config.yml
 
 /scripts/start-serving-app.sh
diff --git a/app/data/container-build/cerc-mobymask-ui/Dockerfile b/app/data/container-build/cerc-mobymask-ui/Dockerfile
index 651d718f..9d4868d2 100644
--- a/app/data/container-build/cerc-mobymask-ui/Dockerfile
+++ b/app/data/container-build/cerc-mobymask-ui/Dockerfile
@@ -50,9 +50,9 @@ RUN yarn global add http-server
 
 # Globally install both versions of the payload web app package
 # Install old version of MobyMask web app
-RUN yarn global add @cerc-io/mobymask-ui@0.1.3
+RUN yarn global add @cerc-io/mobymask-ui@0.1.4
 # Install the LXDAO version of MobyMask web app
-RUN yarn global add @cerc-io/mobymask-ui-lxdao@npm:@cerc-io/mobymask-ui@0.1.3-lxdao-0.1.1
+RUN yarn global add @cerc-io/mobymask-ui-lxdao@npm:@cerc-io/mobymask-ui@0.1.4-lxdao-0.1.1
 
 # Expose port for http
 EXPOSE 80
diff --git a/app/data/container-build/cerc-mobymask-ui/apply-webapp-config.sh b/app/data/container-build/cerc-mobymask-ui/apply-webapp-config.sh
index 9f32cd23..2779b3a1 100755
--- a/app/data/container-build/cerc-mobymask-ui/apply-webapp-config.sh
+++ b/app/data/container-build/cerc-mobymask-ui/apply-webapp-config.sh
@@ -33,7 +33,7 @@ do
     echo "Substituting: ${template_string_to_replace} = ${template_value_to_substitute}"
 
     # TODO: Pass keys to be replaced without double quotes
-    if [[ "$template_string_to_replace" =~ ^${config_prefix}_(relayNodes|chainId)$ ]]; then
+    if [[ "$template_string_to_replace" =~ ^${config_prefix}_(relayNodes|chainId|denyMultiaddrs)$ ]]; then
         find ${webapp_files_dir} -type f -exec sed -i 's#"'"${template_string_to_replace}"'"#'"${template_value_to_substitute}"'#g' {} +
     else
         # Note: we do not escape our strings, on the expectation they do not container the '#' char.
diff --git a/app/data/container-build/cerc-react-peer/Dockerfile b/app/data/container-build/cerc-react-peer/Dockerfile
index 191f986b..50670e03 100644
--- a/app/data/container-build/cerc-react-peer/Dockerfile
+++ b/app/data/container-build/cerc-react-peer/Dockerfile
@@ -21,7 +21,7 @@ RUN mkdir -p /config
 RUN yarn global add http-server
 
 # Globally install the payload web app package
-RUN yarn global add @cerc-io/test-app@0.2.33
+RUN yarn global add @cerc-io/test-app@0.2.34
 
 # Expose port for http
 EXPOSE 80
diff --git a/app/data/container-build/cerc-react-peer/apply-webapp-config.sh b/app/data/container-build/cerc-react-peer/apply-webapp-config.sh
index a7f0a28e..59dee869 100755
--- a/app/data/container-build/cerc-react-peer/apply-webapp-config.sh
+++ b/app/data/container-build/cerc-react-peer/apply-webapp-config.sh
@@ -33,7 +33,7 @@ do
     echo "Substituting: ${template_string_to_replace} = ${template_value_to_substitute}"
 
     # TODO: Pass keys to be replaced without double quotes
-    if [[ "$template_string_to_replace" == "${config_prefix}_relayNodes" ]]; then
+    if [[ "$template_string_to_replace" =~ ^${config_prefix}_(relayNodes|denyMultiaddrs)$ ]]; then
         find ${webapp_files_dir} -type f -exec sed -i 's#"'"${template_string_to_replace}"'"#'"${template_value_to_substitute}"'#g' {} +
     else
         # Note: we do not escape our strings, on the expectation they do not container the '#' char.
diff --git a/app/data/stacks/mobymask-v2/web-apps.md b/app/data/stacks/mobymask-v2/web-apps.md
index 2eb037f6..d1570c93 100644
--- a/app/data/stacks/mobymask-v2/web-apps.md
+++ b/app/data/stacks/mobymask-v2/web-apps.md
@@ -26,6 +26,9 @@ Create and update an env file to be used in the next step ([defaults](../../conf
   # Eg. CERC_RELAY_NODES=["/dns4/example.com/tcp/443/wss/p2p/12D3KooWGHmDDCc93XUWL16FMcTPCGu2zFaMkf67k8HZ4gdQbRDr"]
   CERC_RELAY_NODES=[]
 
+  # Set of multiaddrs to be avoided while dialling
+  CERC_DENY_MULTIADDRS=[]
+
   # Also add if running MobyMask app:
 
   # Watcher endpoint used by the app for GQL queries