diff --git a/src/config/defaults.rs b/src/config/defaults.rs
index 2dee3e0..f4180c9 100644
--- a/src/config/defaults.rs
+++ b/src/config/defaults.rs
@@ -37,7 +37,7 @@ pub(crate) fn default_replay_window_secs() -> u64 {
 }
 
 pub(crate) fn default_handshake_timeout() -> u64 {
-    15
+    30
 }
 
 pub(crate) fn default_connect_timeout() -> u64 {
@@ -52,11 +52,11 @@ pub(crate) fn default_ack_timeout() -> u64 {
     300
 }
 pub(crate) fn default_me_one_retry() -> u8 {
-    3
+    12
 }
 
 pub(crate) fn default_me_one_timeout() -> u64 {
-    1500
+    1200
 }
 
 pub(crate) fn default_listen_addr() -> String {
@@ -83,7 +83,7 @@ pub(crate) fn default_unknown_dc_log_path() -> Option<String> {
 }
 
 pub(crate) fn default_pool_size() -> usize {
-    2
+    16
 }
 
 pub(crate) fn default_keepalive_interval() -> u64 {
@@ -207,4 +207,4 @@ where
         }
     }
     Ok(out)
-}
+}
\ No newline at end of file
diff --git a/src/config/types.rs b/src/config/types.rs
index 6c54598..1983433 100644
--- a/src/config/types.rs
+++ b/src/config/types.rs
@@ -118,7 +118,7 @@ impl Default for NetworkConfig {
     fn default() -> Self {
         Self {
             ipv4: true,
-            ipv6: None,
+            ipv6: Some(false),
             prefer: 4,
             multipath: false,
             stun_servers: default_stun_servers(),
@@ -140,7 +140,7 @@ pub struct GeneralConfig {
     #[serde(default = "default_true")]
     pub fast_mode: bool,
 
-    #[serde(default)]
+    #[serde(default = "default_true")]
     pub use_middle_proxy: bool,
 
     #[serde(default)]
@@ -157,7 +157,7 @@ pub struct GeneralConfig {
     pub middle_proxy_nat_ip: Option<IpAddr>,
 
     /// Enable STUN-based NAT probing to discover public IP:port for ME KDF.
-    #[serde(default)]
+    #[serde(default = "default_true")]
     pub middle_proxy_nat_probe: bool,
 
     /// Optional STUN server address (host:port) for NAT probing.
@@ -283,15 +283,15 @@ impl Default for GeneralConfig {
             modes: ProxyModes::default(),
             prefer_ipv6: false,
             fast_mode: true,
-            use_middle_proxy: false,
+            use_middle_proxy: true,
             ad_tag: None,
             proxy_secret_path: None,
             middle_proxy_nat_ip: None,
-            middle_proxy_nat_probe: false,
+            middle_proxy_nat_probe: true,
             middle_proxy_nat_stun: None,
             middle_proxy_nat_stun_servers: Vec::new(),
             middle_proxy_pool_size: default_pool_size(),
-            middle_proxy_warm_standby: 0,
+            middle_proxy_warm_standby: 8,
             me_keepalive_enabled: true,
             me_keepalive_interval_secs: default_keepalive_interval(),
             me_keepalive_jitter_secs: default_keepalive_jitter(),
@@ -302,7 +302,7 @@ impl Default for GeneralConfig {
             me_reconnect_max_concurrent_per_dc: 1,
             me_reconnect_backoff_base_ms: default_reconnect_backoff_base_ms(),
             me_reconnect_backoff_cap_ms: default_reconnect_backoff_cap_ms(),
-            me_reconnect_fast_retry_count: 1,
+            me_reconnect_fast_retry_count: 11,
             stun_iface_mismatch_ignore: false,
             unknown_dc_log_path: default_unknown_dc_log_path(),
             log_level: LogLevel::Normal,
@@ -455,7 +455,7 @@ pub struct AntiCensorshipConfig {
     pub fake_cert_len: usize,
 
     /// Enable TLS certificate emulation using cached real certificates.
-    #[serde(default)]
+    #[serde(default = "default_true")]
     pub tls_emulation: bool,
 
     /// Directory to store TLS front cache (on disk).
@@ -489,7 +489,7 @@ impl Default for AntiCensorshipConfig {
             mask_port: default_mask_port(),
             mask_unix_sock: None,
             fake_cert_len: default_fake_cert_len(),
-            tls_emulation: false,
+            tls_emulation: true,
             tls_front_dir: default_tls_front_dir(),
             server_hello_delay_min_ms: default_server_hello_delay_min_ms(),
             server_hello_delay_max_ms: default_server_hello_delay_max_ms(),
@@ -615,9 +615,9 @@ pub struct ListenerConfig {
 /// - omitted                    — show no links (default)
 #[derive(Debug, Clone)]
 pub enum ShowLink {
-    /// Don't show any links (default when omitted).
+    /// Don't show any links.
     None,
-    /// Show links for all configured users.
+    /// Show links for all configured users (default).
     All,
     /// Show links for specific users.
     Specific(Vec<String>),
@@ -625,7 +625,7 @@ pub enum ShowLink {
 
 impl Default for ShowLink {
     fn default() -> Self {
-        ShowLink::None
+        ShowLink::All
     }
 }