diff --git a/.evergreen/csfle/stop-servers.sh b/.evergreen/csfle/stop-servers.sh
index 7f92bfec..4ff176e8 100755
--- a/.evergreen/csfle/stop-servers.sh
+++ b/.evergreen/csfle/stop-servers.sh
@@ -12,3 +12,10 @@ if [ -f "kmip_pids.pid" ]; then
   rm kmip_pids.pid
 fi
 popd
+
+# Forcibly kill the process listening on the desired ports, most likely
+# left running from a previous task.
+. "$SCRIPT_DIR/../process-utils.sh"
+for port in 5698 9000 9001 9002 8080; do
+  killport $port 9
+done
diff --git a/.evergreen/process-utils.sh b/.evergreen/process-utils.sh
new file mode 100755
index 00000000..800270a1
--- /dev/null
+++ b/.evergreen/process-utils.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+#
+# process-utils.sh
+#
+# Usage:
+#   . /path/to/process]-utils.sh
+#
+# This file defines the following functions:
+#   - killport
+# These functions may be invoked from any working directory.
+
+
+# killport
+#
+# Usage:
+#   killport 8889
+#
+# Parameters:
+#   "$1": The port of the process to kill.
+#   "$2": The signal to send, defaults to SIGTERM.
+#
+# Kill the process listening on the given port.
+killport() {
+  local -r port="${1:?'killport requires a port'}"
+  local -r signal="${2:-15}"
+  local pid=""
+
+  if [[ "${OSTYPE:?}" == cygwin || "${OSTYPE:?}" == msys ]]; then
+    for pid in $(netstat -ano | grep ":$port .* LISTENING" | awk '{print $5}' | tr -d '[:space:]'); do
+      taskkill /F /T /PID "$pid" || true
+    done
+  elif [ -x "$(command -v lsof)" ]; then
+    for pid in $(lsof -t "-i:$port" || true); do
+      kill "$pid" -${signal} || true
+    done
+  elif [ -x "$(command -v fuser)" ]; then
+    fuser --kill -${signal} "$port/tcp" || true
+  elif [ -x "$(command -v ss)" ]; then
+    for pid in $(ss -tlnp "sport = :$port" | awk 'NR>1 {split($7,a,","); print a[1]}' | tr -d '[:space:]'); do
+      kill "$pid" -${signal} || true
+    done
+  else
+    echo "Unable to identify the OS (${OSTYPE:?}) or find necessary utilities (fuser/lsof/ss) to kill the process."
+    exit 1
+  fi
+}
diff --git a/.evergreen/start-orchestration.sh b/.evergreen/start-orchestration.sh
index 315f027a..f774f015 100755
--- a/.evergreen/start-orchestration.sh
+++ b/.evergreen/start-orchestration.sh
@@ -51,45 +51,12 @@ if [[ "${OSTYPE:?}" == cygwin ]]; then
   ORCHESTRATION_ARGUMENTS="$ORCHESTRATION_ARGUMENTS -s wsgiref"
 fi
 
-
-# killport
-#
-# Usage:
-#   killport 8889
-#
-# Parameters:
-#   "$1": The port of the process to kill.
-#
-# Kill the process listening on the given port.
-killport() {
-  local -r port="${1:?'killport requires a port'}"
-  local pid=""
-
-  if [[ "${OSTYPE:?}" == cygwin || "${OSTYPE:?}" == msys ]]; then
-    for pid in $(netstat -ano | grep ":$port .* LISTENING" | awk '{print $5}' | tr -d '[:space:]'); do
-      taskkill /F /T /PID "$pid" || true
-    done
-  elif [ -x "$(command -v lsof)" ]; then
-    for pid in $(lsof -t "-i:$port" || true); do
-      kill "$pid" || true
-    done
-  elif [ -x "$(command -v fuser)" ]; then
-    fuser --kill -SIGTERM "$port/tcp" || true
-  elif [ -x "$(command -v ss)" ]; then
-    for pid in $(ss -tlnp "sport = :$port" | awk 'NR>1 {split($7,a,","); print a[1]}' | tr -d '[:space:]'); do
-      kill "$pid" || true
-    done
-  else
-    echo "Unable to identify the OS (${OSTYPE:?}) or find necessary utilities (fuser/lsof/ss) to kill the process."
-    exit 1
-  fi
-}
-
 # Forcibly kill the process listening on port 8889, most likely a wild
 # mongo-orchestration left running from a previous task.
 # NOTE: Killing mongo-orchestration with SIGTERM gives it a chance to
 # cleanup any running mongo servers.
 # Also kill any leftover mongo processes on common ports as a backup.
+. "$det_evergreen_dir/process-utils.sh"
 for port in 8889 27017 27018 27019 27217 27218 27219 1026; do
   killport $port
 done