diff --git a/xCAT-client/bin/pping b/xCAT-client/bin/pping
index 4bc3af11b..c5257d10a 100755
--- a/xCAT-client/bin/pping
+++ b/xCAT-client/bin/pping
@@ -199,9 +199,10 @@ sub nmap_pping {
         @nmap_options = xCAT::TableUtils->get_site_attribute("nmapoptions");
         $more_options = $nmap_options[0];
     }
-    open(FPING, "nmap -PE --system-dns --unprivileged --send-ip -sP $more_options " . join(' ', @$nodes) . " 2> /dev/null|") or die("Cannot open nmap pipe: $!");
+    # Added port 22 for unprivileged case (#4324)
+    open(NMAP, "nmap -PE --system-dns --send-ip -sP --unprivileged -PA80,443,22 $more_options " . join(' ', @$nodes) . " 2> /dev/null|") or die("Cannot open nmap pipe: $!");
     my $node;
-    while (<FPING>) {
+    while (<NMAP>) {
         if (/Host (.*) \(.*\) appears to be up/) {
             $node = $1;
             unless ($deadnodes{$node}) {
diff --git a/xCAT-server/lib/xcat/plugins/nodestat.pm b/xCAT-server/lib/xcat/plugins/nodestat.pm
index 7486aae58..bdea53303 100644
--- a/xCAT-server/lib/xcat/plugins/nodestat.pm
+++ b/xCAT-server/lib/xcat/plugins/nodestat.pm
@@ -658,7 +658,7 @@ sub process_request_nmap {
         if ($ip6 and scalar(@ip6s)) {
             open($fping, "nmap --unprivileged -6 -PS$ports,3001 -n --send-ip -p $ports,3001 $more_options " . join(' ', @ip6s) . " 2> /dev/null|") or die("Can't start nmap: $!");
         } elsif (not $ip6 and scalar(@ips)) {
-            open($fping, "nmap --unprivileged -PE -n --send-ip -p $ports,3001 $more_options " . join(' ', @ips) . " 2> /dev/null|") or die("Can't start nmap: $!");
+            open($fping, "nmap --unprivileged -PA80,443,22 -PE -n --send-ip -p $ports,3001 $more_options " . join(' ', @ips) . " 2> /dev/null|") or die("Can't start nmap: $!");
         } else { next; }
         while (<$fping>) {
             if (/Interesting ports on ([^ ]*)[: ]/ or /Nmap scan report for ([^ ]*)/) {