Index: mudlib/sys/telnet.h
===================================================================
--- mudlib/sys/telnet.h	(revision 2714)
+++ mudlib/sys/telnet.h	(working copy)
@@ -106,10 +106,15 @@
 #define  TELOPT_STARTTLS      46        /* Transport Layer Security */
 
 /* Inofficial, mud specific telnet options */
+
+#define  TELOPT_MSSP          70        /* Mud Server Status Protocol */
 #define  TELOPT_COMPRESS      85        /* Mud Compression Protocol, v.1 */
 #define  TELOPT_COMPRESS2     86        /* Mud Compression Protocol, v.2 */
 #define  TELOPT_MSP           90        /* Mud Sound Protocol */
 #define  TELOPT_MXP           91        /* Mud Extension Protocol */
+#define  TELOPT_ZMP           93        /* Zenith Mud Protocol */
+#define  TELOPT_MUSHCLIENT   102        /* Mushclient/Aardwolf Protocol */
+#define  TELOPT_ATCP         200        /* Achaea Telnet Client Protocol */
 #define  TELOPT_EXOPL        255        /* extended-options-list */
 
 #define  NTELOPTS            256        /* was: (1+TELOPT_NEWENV) */
Index: src/comm.c
===================================================================
--- src/comm.c	(revision 2714)
+++ src/comm.c	(working copy)
@@ -5053,6 +5053,26 @@
     telopts_dont[TELOPT_STARTTLS] = reply_h_telnet_neg;
     telopts_will[TELOPT_STARTTLS] = reply_h_telnet_neg;
     telopts_wont[TELOPT_STARTTLS] = reply_h_telnet_neg;
+
+    telopts_do[TELOPT_MSSP] = reply_h_telnet_neg;
+    telopts_dont[TELOPT_MSSP] = reply_h_telnet_neg;
+    telopts_will[TELOPT_MSSP] = reply_h_telnet_neg;
+    telopts_wont[TELOPT_MSSP] = reply_h_telnet_neg;
+
+    telopts_do[TELOPT_ZMP] = reply_h_telnet_neg;
+    telopts_dont[TELOPT_ZMP] = reply_h_telnet_neg;
+    telopts_will[TELOPT_ZMP] = reply_h_telnet_neg;
+    telopts_wont[TELOPT_ZMP] = reply_h_telnet_neg;
+
+    telopts_do[TELOPT_MUSHCLIENT] = reply_h_telnet_neg;
+    telopts_dont[TELOPT_MUSHCLIENT] = reply_h_telnet_neg;
+    telopts_will[TELOPT_MUSHCLIENT] = reply_h_telnet_neg;
+    telopts_wont[TELOPT_MUSHCLIENT] = reply_h_telnet_neg;
+
+    telopts_do[TELOPT_ATCP] = reply_h_telnet_neg;
+    telopts_dont[TELOPT_ATCP] = reply_h_telnet_neg;
+    telopts_will[TELOPT_ATCP] = reply_h_telnet_neg;
+    telopts_wont[TELOPT_ATCP] = reply_h_telnet_neg;
 } /* init_telopts() */
 
 /*-------------------------------------------------------------------------*/