diff --git a/aztec-up/bin/.aztec-run b/aztec-up/bin/.aztec-run
index d374e63ded73..53044ad1d960 100755
--- a/aztec-up/bin/.aztec-run
+++ b/aztec-up/bin/.aztec-run
@@ -113,18 +113,10 @@ done
 arg_port_assignment=""
 
 # Dynamic port assignment.
-if [ -n "${AZTEC_PORT:-}" ]; then
-  arg_port_assignment+=" -p $AZTEC_PORT:$AZTEC_PORT "
-fi
-
-if [ -n "${P2P_TCP_LISTEN_ADDR:-}" ]; then
-  P2P_TCP_PORT=${P2P_TCP_LISTEN_ADDR#*:}
-  arg_port_assignment+=" -p $P2P_TCP_PORT:$P2P_TCP_PORT "
-fi
-
-if [ -n "${P2P_UDP_LISTEN_ADDR:-}" ]; then
-  P2P_UDP_PORT=${P2P_UDP_LISTEN_ADDR#*:}
-  arg_port_assignment+=" -p $P2P_UDP_PORT:$P2P_UDP_PORT/udp "
+if [ -n "${PORTS_TO_EXPOSE:-}" ]; then
+  for port in ${PORTS_TO_EXPOSE}; do
+    arg_port_assignment+=" -p $port "
+  done
 fi
 
 # For debugging the aztec-up scripts, can be useful to mount local code into container.
diff --git a/aztec-up/bin/aztec b/aztec-up/bin/aztec
index 273190110e7f..864d862bcbd8 100755
--- a/aztec-up/bin/aztec
+++ b/aztec-up/bin/aztec
@@ -13,6 +13,11 @@ while [ "$#" -gt 0 ]; do
       AZTEC_PORT="$2"
       shift 2
       ;;
+    -a | --anvil-port)
+      # Override default port exposed on container.
+      ANVIL_PORT="$2"
+      shift 2
+      ;;
     --pxe.network)
       # Set version to user-specified network (e.g. 'devnet')
       VERSION="$2"
@@ -49,8 +54,11 @@ case ${1:-} in
     ;;
   start)
     export ENV_VARS_TO_INJECT="$(get_env_vars)"
-    # Opens the requested port on the container.
-    export AZTEC_PORT=${AZTEC_PORT:-8080}
+
+    # Dynamic port assignments, .aztec-run will expose the array PORTS_TO_EXPOSE as a space-separated string.
+    AZTEC_PORT=${AZTEC_PORT:-8080}
+    export PORTS_TO_EXPOSE="$AZTEC_PORT:$AZTEC_PORT"
+
     if [ "${2:-}" == "--sandbox" ]; then
       # TODO: This entire special case should go away.
       # Sandbox mode should start it's own anvil.
@@ -67,11 +75,32 @@ case ${1:-} in
       export ARCHIVER_VIEM_POLLING_INTERVAL_MS=500
       export TEST_ACCOUNTS=${TEST_ACCOUNTS:-true}
       export LOG_LEVEL=${LOG_LEVEL:-info}
+
+      ANVIL_PORT=${ANVIL_PORT:-8545}
+      anvil_port_assignment="$ANVIL_PORT:8545"
+
+      PORTS_TO_EXPOSE="${PORTS_TO_EXPOSE:-} $anvil_port_assignment"
+
       exec $(dirname $0)/.aztec-run aztec-sandbox bash -c "
         anvil --host 0.0.0.0 --silent &
         node --no-warnings /usr/src/yarn-project/aztec/dest/bin/index.js start --sandbox
       "
     else
+      # Export p2p port forwarding only if set in env vars
+      if [ -n "${P2P_TCP_LISTEN_ADDR:-}" ]; then
+        P2P_TCP_PORT=${P2P_TCP_LISTEN_ADDR##*:}
+        P2P_TCP_LISTEN_MAPPING="$P2P_TCP_PORT:$P2P_TCP_PORT"
+
+        PORTS_TO_EXPOSE="${PORTS_TO_EXPOSE:-} $P2P_TCP_LISTEN_MAPPING"
+      fi
+
+      if [ -n "${P2P_UDP_LISTEN_ADDR:-}" ]; then
+        P2P_UDP_PORT=${P2P_UDP_LISTEN_ADDR##*:}
+        P2P_UDP_LISTEN_MAPPING="$P2P_UDP_PORT:$P2P_UDP_PORT/udp"
+
+        PORTS_TO_EXPOSE="${PORTS_TO_EXPOSE:-} $P2P_UDP_LISTEN_MAPPING"
+      fi
+
       exec $(dirname $0)/.aztec-run aztec-start \
         node --no-warnings /usr/src/yarn-project/aztec/dest/bin/index.js "$@"
     fi
diff --git a/docs/docs/developers/reference/environment_reference/sandbox-reference.md b/docs/docs/developers/reference/environment_reference/sandbox-reference.md
index 22ab9ff46781..6ded6186fc15 100644
--- a/docs/docs/developers/reference/environment_reference/sandbox-reference.md
+++ b/docs/docs/developers/reference/environment_reference/sandbox-reference.md
@@ -14,24 +14,19 @@ For a quick start, follow the [guide](../../getting_started.md) to install the s
 
 There are various environment variables you can use when running the whole sandbox or when running on of the available modes.
 
-To change them, you can open `~/.aztec/docker-compose.sandbox.yml` and edit them directly.
-
 **Sandbox**
 
 ```sh
 LOG_LEVEL=debug # Options are 'fatal', 'error', 'warn', 'info', 'verbose', 'debug', 'trace'
 HOST_WORKDIR='${PWD}' # The location to store log outputs. Will use ~/.aztec where the docker-compose.yml file is stored by default.
-ETHEREUM_HOSTS=http://ethereum:8545 # List of Ethereum JSON RPC URLs. We use an anvil instance that runs in parallel to the sandbox on docker by default.
+ETHEREUM_HOSTS=http://127.0.0.1:8545 # List of Ethereum JSON RPC URLs. We use an anvil instance that runs in parallel to the sandbox on docker by default.
+ANVIL_PORT=8545 # The port that docker will forward to the anvil instance (default: 8545)
 L1_CHAIN_ID=31337 # The Chain ID that the Ethereum host is using.
 TEST_ACCOUNTS='true' # Option to deploy 3 test account when sandbox starts. (default: true)
 MODE='sandbox' # Option to start the sandbox or a standalone part of the system. (default: sandbox)
 PXE_PORT=8080 # The port that the PXE will be listening to (default: 8080)
 AZTEC_NODE_PORT=8080 # The port that Aztec Node will be listening to (default: 8080)
 
-# Ethereum Forking (Optional: not enabled by default) #
-FORK_BLOCK_NUMBER=0 # The block number to fork from
-FORK_URL="" # The URL of the Ethereum node to fork from
-
 ## Polling intervals ##
 ARCHIVER_POLLING_INTERVAL_MS=50
 P2P_BLOCK_CHECK_INTERVAL_MS=50