diff --git a/OpenVPN Adapter/OpenVPNConfiguration.h b/OpenVPN Adapter/OpenVPNConfiguration.h
index 76f1c71..5885bf7 100644
--- a/OpenVPN Adapter/OpenVPNConfiguration.h	
+++ b/OpenVPN Adapter/OpenVPNConfiguration.h	
@@ -10,10 +10,17 @@
 
 // TODO: Wrap ClientAPI::Config into Objective-C class
 
+/**
+ Transport protocol options
+ */
 typedef NS_ENUM(NSInteger, OpenVPNTransportProtocol) {
+    ///
     OpenVPNTransportProtocolUDP,
+    ///
     OpenVPNTransportProtocolTCP,
+    ///
     OpenVPNTransportProtocolAdaptive,
+    /// Use a transport protocol specified in the profile
     OpenVPNTransportProtocolDefault
 };
 
@@ -29,6 +36,20 @@ typedef NS_ENUM(NSInteger, OpenVPNIPv6Preference) {
     OpenVPNIPv6PreferenceDefault
 };
 
+/**
+ Compression mode options
+ */
+typedef NS_ENUM(NSInteger, OpenVPNCompressionMode) {
+    /// Allow compression on both uplink and downlink
+    OpenVPNCompressionModeEnabled,
+    /// Support compression stubs only
+    OpenVPNCompressionModeDisabled,
+    /// Allow compression on downlink only (i.e. server -> client)
+    OpenVPNCompressionModeAsym,
+    /// Default behavior (support compression stubs only)
+    OpenVPNCompressionModeDefault
+};
+
 @interface OpenVPNConfiguration : NSObject
 
 /**
@@ -86,4 +107,19 @@ typedef NS_ENUM(NSInteger, OpenVPNIPv6Preference) {
  */
 @property (nonatomic) BOOL autologinSessions;
 
+/**
+ If YES, don't send client cert/key to peer
+ */
+@property (nonatomic) BOOL disableClientCert;
+
+/**
+ SSL library debug level
+ */
+@property (nonatomic) NSInteger sslDebugLevel;
+
+/**
+ Compression mode
+ */
+@property (nonatomic) OpenVPNCompressionMode compressionMode;
+
 @end
diff --git a/OpenVPN Adapter/OpenVPNConfiguration.mm b/OpenVPN Adapter/OpenVPNConfiguration.mm
index fa74a3a..223b13d 100644
--- a/OpenVPN Adapter/OpenVPNConfiguration.mm	
+++ b/OpenVPN Adapter/OpenVPNConfiguration.mm	
@@ -28,7 +28,7 @@ using namespace openvpn;
 @implementation OpenVPNConfiguration
 
 - (NSData *)fileContent {
-    return _config.content.size() != 0 ? [NSData dataWithBytes:_config.content.data() length:_config.content.size()] : nil;
+    return !_config.content.empty() ? [NSData dataWithBytes:_config.content.data() length:_config.content.size()] : nil;
 }
 
 - (void)setFileContent:(NSData *)fileContent {
@@ -66,7 +66,7 @@ using namespace openvpn;
 }
 
 - (NSString *)guiVersion {
-    return _config.guiVersion.size() != 0 ? [NSString stringWithUTF8String:_config.guiVersion.c_str()] : nil;
+    return !_config.guiVersion.empty() ? [NSString stringWithUTF8String:_config.guiVersion.c_str()] : nil;
 }
 
 - (void)setGuiVersion:(NSString *)guiVersion {
@@ -74,7 +74,7 @@ using namespace openvpn;
 }
 
 - (NSString *)server {
-    return _config.serverOverride.size() != 0 ? [NSString stringWithUTF8String:_config.serverOverride.c_str()] : nil;
+    return !_config.serverOverride.empty() ? [NSString stringWithUTF8String:_config.serverOverride.c_str()] : nil;
 }
 
 - (void)setServer:(NSString *)serverOverride {
@@ -189,4 +189,60 @@ using namespace openvpn;
     _config.autologinSessions = autologinSessions;
 }
 
+- (BOOL)disableClientCert {
+    return _config.disableClientCert;
+}
+
+- (void)setDisableClientCert:(BOOL)disableClientCert {
+    _config.disableClientCert = disableClientCert;
+}
+
+- (NSInteger)sslDebugLevel {
+    return _config.sslDebugLevel;
+}
+
+- (void)setSslDebugLevel:(NSInteger)sslDebugLevel {
+    _config.sslDebugLevel = sslDebugLevel;
+}
+
+- (OpenVPNCompressionMode)compressionMode {
+    NSDictionary *options = @{
+        @"yes": @(OpenVPNCompressionModeEnabled),
+        @"no": @(OpenVPNCompressionModeDisabled),
+        @"asym": @(OpenVPNCompressionModeAsym),
+        @"": @(OpenVPNCompressionModeDefault)
+    };
+    
+    NSString *currentValue = [NSString stringWithUTF8String:_config.compressionMode.c_str()];
+    
+    NSNumber *preference = options[currentValue];
+    NSAssert(preference != nil, @"Incorrect compressionMode value");
+    
+    return (OpenVPNCompressionMode)[preference integerValue];
+}
+
+- (void)setCompressionMode:(OpenVPNCompressionMode)compressionMode {
+    switch (compressionMode) {
+        case OpenVPNCompressionModeEnabled:
+            _config.compressionMode = "yes";
+            break;
+            
+        case OpenVPNCompressionModeDisabled:
+            _config.compressionMode = "no";
+            break;
+            
+        case OpenVPNCompressionModeAsym:
+            _config.compressionMode = "asym";
+            break;
+            
+        case OpenVPNCompressionModeDefault:
+            _config.compressionMode = "";
+            break;
+            
+        default:
+            NSAssert(NO, @"Incorrect OpenVPNCompressionMode value");
+            break;
+    }
+}
+
 @end