diff --git a/scripts/test-integration.sh b/scripts/test-integration.sh
index 463fc03..443e4ff 100755
--- a/scripts/test-integration.sh
+++ b/scripts/test-integration.sh
@@ -2,7 +2,7 @@
 
 cd "$(readlink -f "$(dirname "$BASH_SOURCE")")"/..
 
-IMAGE="${1:-$( docker images | grep '^fhem/*' | grep -v "<none>" | awk '{print $3}' | uniq )}"
+IMAGE="${1:-$( docker images | grep 'alexa' | grep -v "<none>" | awk '{print $3}' | uniq )}"
 
 echo -e "\n\n"
 docker images 
@@ -15,14 +15,14 @@ RETURNCODE=0
 
 for ID in $IMAGE; do
   echo "Booting up container for variant $ID ..."
-  CONTAINER=$( docker run -d -ti --health-interval=60s --health-timeout=10s --health-start-period=150s --health-retries=5 $ID )
+  CONTAINER=$( docker run -d -ti --health-interval=60s --health-timeout=10s --health-start-period=150s --health-retries=5 "$ID" )
   docker container ls | grep 'fhem/.*'
 
   echo -ne "Waiting for container ..."
   sleep 3
   bootstate="created"
-  until [ $bootstate != "created" ]; do
-    bootstate=$( docker inspect --format="{{json .State}}" $CONTAINER 2>/dev/null | jq -r .Status )
+  until [ "$bootstate" != "created" ]; do
+    bootstate=$( docker inspect --format="{{json .State}}" "$CONTAINER" 2>/dev/null | jq -r .Status )
     echo -n " ."
     sleep 3
   done
@@ -37,13 +37,21 @@ for ID in $IMAGE; do
   if [ -z "$status" ]; then
     echo -ne "\nWaiting for health status report ..."
     healthstate="starting"
-    until [ $healthstate != "starting" ]; do
-      healthstate=$( docker inspect --format="{{json .State}}" $CONTAINER 2>/dev/null | jq -r .Health.Status )
+    until [ "$healthstate" != "starting" ]; do
+      healthstate=$( docker inspect --format="{{json .State}}" "$CONTAINER" 2>/dev/null | jq -r .Health.Status )
       echo -n " ."
       sleep 3
     done
     if [ -n "$healthstate" ] && [ "$healthstate" == "healthy" ]; then
-      status="OK"
+      
+      # Check SSH connection 
+      if ! output=$(docker container exec --user 6062 "${CONTAINER}" ssh -F .ssh/config -p 58824 fhem-va.fhem.de status 2>&1); then 
+        echo "$output"
+        status="ssh-error"
+      else
+        status="OK"
+      fi
+
     elif [ -n "$healthstate" ] && [ "$healthstate" != "null" ]; then
       status=$healthstate
     else
@@ -53,15 +61,15 @@ for ID in $IMAGE; do
   fi
 
   if [ "$status" != "OK" ]; then
-    echo -e "\nImage $ID did come up with unexpected state "$status". Integration test FAILED!\n\n"
-    docker logs $CONTAINER
-    docker container rm $CONTAINER --force --volumes 2>&1>/dev/null
-    docker rmi $ID >/dev/null
+    echo -e "\nImage $ID did come up with unexpected state $status. Integration test FAILED!\n\n"
+    docker logs "$CONTAINER"
+    docker container rm "$CONTAINER" --force --volumes 2>&1>/dev/null
+    docker rmi "$ID" >/dev/null
     echo "$ID $status" >> ./failed_variants
     (( RETURNCODE++ ))
   else
     echo -e "\nImage $ID integration test PASSED.\n\n"
-    docker container rm $CONTAINER --force --volumes 2>&1>/dev/null
+    docker container rm "$CONTAINER" --force --volumes 2>&1>/dev/null
   fi
 done
 
diff --git a/src/entry.sh b/src/entry.sh
index 2ff9c00..ce35882 100755
--- a/src/entry.sh
+++ b/src/entry.sh
@@ -46,7 +46,7 @@ generate_ssh_keys() {
   if [ ! -s ${ALEXAFHEM_DIR}/.ssh/id_rsa ]; then
     echo -e "  - Generating SSH RSA client certificate for user 'alexa-fhem' ..."
     rm -f ${ALEXAFHEM_DIR}/.ssh/id_rsa*
-    ssh-keygen -t rsa -b 4096 -f ${ALEXAFHEM_DIR}/.ssh/id_rsa -q -N "" -o -a 100
+    ssh-keygen -t rsa-sha2-512 -b 4096 -f ${ALEXAFHEM_DIR}/.ssh/id_rsa -q -N "" -o -a 100
     sed -i "s/root@.*/alexa-fhem@alexa-fhem-docker/" ${ALEXAFHEM_DIR}/.ssh/id_rsa.pub
   fi
   chmod 600 ${ALEXAFHEM_DIR}/.ssh/id_rsa
@@ -55,14 +55,15 @@ generate_ssh_keys() {
 
 harden_ssh_client() {
   if [ ! -f ${ALEXAFHEM_DIR}/.ssh/config ]; then
-    echo "IdentityFile ~/.ssh/id_ed25519
-IdentityFile ~/.ssh/id_rsa
-
-Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
-HostKeyAlgorithms ssh-ed25519,ssh-rsa
-KexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256
-MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,umac-128-etm@openssh.com
-" > "${ALEXAFHEM_DIR}"/.ssh/config
+    printf "%s\n" \
+           "IdentityFile ~/.ssh/id_ed25519" \
+           "IdentityFile ~/.ssh/id_rsa" \
+           "PubkeyAcceptedKeyTypes +ssh-rsa" \
+           "HostKeyAlgorithms +ssh-rsa" \
+           "Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr" \
+           "MACs hmac-sha2-256,hmac-sha2-512,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com" \
+           "KexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256" \
+           "Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com" > "${ALEXAFHEM_DIR}"/.ssh/config
   fi
 }