diff --git a/frontend/src/GraphView.jsx b/frontend/src/GraphView.jsx
index ac3e8fb..a315bd8 100644
--- a/frontend/src/GraphView.jsx
+++ b/frontend/src/GraphView.jsx
@@ -4,6 +4,7 @@ function GraphView({ servers, connections }) {
   const [nodePositions, setNodePositions] = useState({});
   const [draggedNode, setDraggedNode] = useState(null);
   const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 });
+  const [hoveredLinkId, setHoveredLinkId] = useState(null);
   const svgRef = useRef(null);
 
   if (servers.length === 0) {
@@ -98,6 +99,17 @@ function GraphView({ servers, connections }) {
     return colors[country] || '#6b7280';
   };
 
+  // Цвета/стили для разных типов туннелей
+  const getTunnelStyle = (tunnelType) => {
+    const map = {
+      GRE: { color: '#206bc4', dash: '0', width: 3 },
+      IPSec: { color: '#f59f00', dash: '6,4', width: 3 },
+      WireGuard: { color: '#2fb344', dash: '0', width: 4 },
+      OpenVPN: { color: '#be4bdb', dash: '3,3', width: 3 },
+    };
+    return map[tunnelType] || { color: '#667382', dash: '5,5', width: 2 };
+  };
+
   return (
     <div style={{ width: '100%', height: '500px', border: '1px solid #e5e7eb', borderRadius: '8px', overflow: 'hidden', background: '#f8fafc' }}>
       <svg 
@@ -110,6 +122,32 @@ function GraphView({ servers, connections }) {
         onMouseLeave={handleMouseUp}
         style={{ cursor: draggedNode ? 'grabbing' : 'default' }}
       >
+        <defs>
+          {/* Определение стрелок под цвет канала */}
+          {Array.from(new Set(connections.map(c => c.tunnelType))).map((t) => {
+            const style = getTunnelStyle(t);
+            return (
+              <marker key={`arrow-${t}`}
+                id={`arrow-${t}`}
+                markerWidth="12"
+                markerHeight="8"
+                refX="10"
+                refY="4"
+                orient="auto"
+              >
+                <polygon points="0 0, 12 4, 0 8" fill={style.color} />
+              </marker>
+            );
+          })}
+          {/* Свечение для выделения */}
+          <filter id="glow" x="-50%" y="-50%" width="200%" height="200%">
+            <feGaussianBlur stdDeviation="2" result="coloredBlur"/>
+            <feMerge>
+              <feMergeNode in="coloredBlur"/>
+              <feMergeNode in="SourceGraphic"/>
+            </feMerge>
+          </filter>
+        </defs>
         {/* Связи */}
         {connections.map((connection, index) => {
           const fromServer = servers.find(s => s.ip === connection.from);
@@ -119,19 +157,27 @@ function GraphView({ servers, connections }) {
 
           const fromPos = getNodePosition(connection.from);
           const toPos = getNodePosition(connection.to);
+          const style = getTunnelStyle(connection.tunnelType);
+          const id = `${connection.from}-${connection.to}-${index}`;
+          const isHovered = hoveredLinkId === id;
 
           return (
-            <g key={`link-${index}`}>
+            <g key={`link-${index}`}
+               onMouseEnter={() => setHoveredLinkId(id)}
+               onMouseLeave={() => setHoveredLinkId(null)}
+            >
               {/* Линия связи */}
               <line
                 x1={fromPos.x}
                 y1={fromPos.y}
                 x2={toPos.x}
                 y2={toPos.y}
-                stroke="#94a3b8"
-                strokeWidth="3"
-                strokeDasharray="5,5"
-                markerEnd="url(#arrowhead)"
+                stroke={style.color}
+                strokeWidth={isHovered ? style.width + 1 : style.width}
+                strokeDasharray={style.dash}
+                markerEnd={`url(#arrow-${connection.tunnelType})`}
+                filter={isHovered ? 'url(#glow)' : undefined}
+                opacity={isHovered ? 1 : 0.9}
               />
               
               {/* Подпись связи */}
@@ -141,8 +187,8 @@ function GraphView({ servers, connections }) {
                 width="80"
                 height="30"
                 rx="15"
-                fill="white"
-                stroke="#e5e7eb"
+                fill="#ffffff"
+                stroke={style.color}
                 strokeWidth="1"
               />
               <text
@@ -282,22 +328,7 @@ function GraphView({ servers, connections }) {
           );
         })}
 
-        {/* Определение стрелки */}
-        <defs>
-          <marker
-            id="arrowhead"
-            markerWidth="12"
-            markerHeight="8"
-            refX="10"
-            refY="4"
-            orient="auto"
-          >
-            <polygon
-              points="0 0, 12 4, 0 8"
-              fill="#94a3b8"
-            />
-          </marker>
-        </defs>
+        {/* Доп. определения добавлены выше */}
       </svg>
     </div>
   );
diff --git a/frontend/src/ServerManager.jsx b/frontend/src/ServerManager.jsx
index d8338c5..92efb80 100644
--- a/frontend/src/ServerManager.jsx
+++ b/frontend/src/ServerManager.jsx
@@ -700,11 +700,20 @@ function ServerManager() {
       />
 
       <div className="card w-100 mb-4">
-        <div className="card-header">
+        <div className="card-header d-flex justify-content-between align-items-center">
           <h3 className="card-title mb-0">Граф связей между серверами</h3>
+          <div className="text-muted small">Поддержка: GRE, IPSec, WireGuard, OpenVPN</div>
         </div>
         <div className="card-body">
           <GraphView servers={servers} connections={connections} />
+          <div className="mt-3">
+            <div className="d-flex align-items-center gap-3 flex-wrap">
+              <div className="d-flex align-items-center gap-2"><span style={{display:'inline-block',width:24,height:4,background:'#206bc4'}}></span><span className="text-muted small">GRE</span></div>
+              <div className="d-flex align-items-center gap-2"><span style={{display:'inline-block',width:24,height:4,background:'#f59f00',borderBottom:'2px dashed #f59f00'}}></span><span className="text-muted small">IPSec</span></div>
+              <div className="d-flex align-items-center gap-2"><span style={{display:'inline-block',width:24,height:4,background:'#2fb344'}}></span><span className="text-muted small">WireGuard</span></div>
+              <div className="d-flex align-items-center gap-2"><span style={{display:'inline-block',width:24,height:4,background:'#be4bdb',borderBottom:'2px dotted #be4bdb'}}></span><span className="text-muted small">OpenVPN</span></div>
+            </div>
+          </div>
         </div>
       </div>
       <div className="card w-100 mb-4">