--- nagios-plugins-1.4.8/plugins/check_ssh.c.orig	2008-01-07 16:18:34.000000000 -0800
+++ nagios-plugins-1.4.8/plugins/check_ssh.c	2008-02-22 10:23:37.000000000 -0800
@@ -54,6 +54,7 @@
 int port = -1;
 char *server_name = NULL;
 char *remote_version = NULL;
+char *remote_protocol = NULL;
 int verbose = FALSE;
 
 int process_arguments (int, char **);
@@ -61,7 +62,7 @@
 void print_help (void);
 void print_usage (void);
 
-int ssh_connect (char *haddr, int hport, char *remote_version);
+int ssh_connect (char *haddr, int hport, char *remote_version, char *remote_protocol);
 
 
 
@@ -83,7 +84,7 @@
 	alarm (socket_timeout);
 
 	/* ssh_connect exits if error is found */
-	result = ssh_connect (server_name, port, remote_version);
+	result = ssh_connect (server_name, port, remote_version, remote_protocol);
 
 	alarm (0);
 
@@ -110,6 +111,7 @@
 		{"timeout", required_argument, 0, 't'},
 		{"verbose", no_argument, 0, 'v'},
 		{"remote-version", required_argument, 0, 'r'},
+		{"remote-protcol", required_argument, 0, 'P'},
 		{0, 0, 0, 0}
 	};
 
@@ -121,7 +123,7 @@
 			strcpy (argv[c], "-t");
 
 	while (1) {
-		c = getopt_long (argc, argv, "+Vhv46t:r:H:p:", longopts, &option);
+		c = getopt_long (argc, argv, "+Vhv46t:r:H:p:P:", longopts, &option);
 
 		if (c == -1 || c == EOF)
 			break;
@@ -157,6 +159,9 @@
 		case 'r':									/* remote version */
 			remote_version = optarg;
 			break;
+		case 'P':									/* remote version */
+			remote_protocol = optarg;
+			break;
 		case 'H':									/* host */
 			if (is_host (optarg) == FALSE)
 				usage2 (_("Invalid hostname/address"), optarg);
@@ -211,7 +216,7 @@
 
 
 int
-ssh_connect (char *haddr, int hport, char *remote_version)
+ssh_connect (char *haddr, int hport, char *remote_version, char *remote_protocol)
 {
 	int sd;
 	int result;
@@ -254,6 +259,13 @@
 				 ssh_server, ssh_proto, remote_version);
 			exit (STATE_WARNING);
 		}
+
+		if (remote_protocol && strcmp(remote_protocol, ssh_proto)) {
+			printf
+				(_("SSH WARNING - %s (protocol %s) protocol version mismatch, expected '%s'\n"),
+				 ssh_server, ssh_proto, remote_protocol);
+			exit (STATE_WARNING);
+		}
 		
 		printf
 			(_("SSH OK - %s (protocol %s)\n"),
@@ -293,6 +305,9 @@
 	printf (" %s\n", "-r, --remote-version=STRING");
   printf ("    %s\n", _("Warn if string doesn't match expected server version (ex: OpenSSH_3.9p1)"));
 	
+	printf (" %s\n", "-P, --remote-protocol=STRING");
+  printf ("    %s\n", _("Warn if protocol doesn't match expected protocol version (ex: 2.0)"));
+	
 	printf (_(UT_VERBOSE));
 
 	printf (_(UT_SUPPORT));