diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..e3e5d04
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+  <component name="ProjectInspectionProfilesVisibleTreeState">
+    <entry key="Project Default">
+      <profile-state>
+        <expanded-state>
+          <State />
+          <State>
+            <id>Go</id>
+          </State>
+        </expanded-state>
+        <selected-state>
+          <State>
+            <id>Code style issuesGo</id>
+          </State>
+        </selected-state>
+      </profile-state>
+    </entry>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..b1d4c06
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/setup-ipsec-vpn.iml" filepath="$PROJECT_DIR$/.idea/setup-ipsec-vpn.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/setup-ipsec-vpn.iml b/.idea/setup-ipsec-vpn.iml
new file mode 100644
index 0000000..c956989
--- /dev/null
+++ b/.idea/setup-ipsec-vpn.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..a9fbb54
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,207 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="8a75e99c-4741-4971-bf11-54fd38b65e76" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/docs/clients-zh.md" beforeDir="false" afterPath="$PROJECT_DIR$/docs/clients-zh.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/docs/clients.md" beforeDir="false" afterPath="$PROJECT_DIR$/docs/clients.md" afterDir="false" />
+    </list>
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileEditorManager">
+    <leaf>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/docs/clients.md">
+          <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+            <state split_layout="SPLIT">
+              <first_editor relative-caret-position="430">
+                <caret line="419" column="6" selection-start-line="419" selection-start-column="6" selection-end-line="419" selection-end-column="6" />
+              </first_editor>
+              <second_editor />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/docs/clients-zh.md">
+          <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+            <state split_layout="SPLIT">
+              <first_editor relative-caret-position="289">
+                <caret line="185" column="45" selection-start-line="185" selection-start-column="45" selection-end-line="185" selection-end-column="45" />
+              </first_editor>
+              <second_editor />
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>aes128-sha1-modp2048</find>
+    </findStrings>
+    <replaceStrings>
+      <replace />
+    </replaceStrings>
+    <dirStrings>
+      <dir>$PROJECT_DIR$</dir>
+    </dirStrings>
+  </component>
+  <component name="GOROOT" path="/usr/local/go" />
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/docs/clients.md" />
+        <option value="$PROJECT_DIR$/docs/clients-zh.md" />
+      </list>
+    </option>
+  </component>
+  <component name="JsFlowSettings">
+    <service-enabled>true</service-enabled>
+    <exe-path />
+    <other-services-enabled>true</other-services-enabled>
+    <auto-save>true</auto-save>
+  </component>
+  <component name="ProjectConfigurationFiles">
+    <option name="files">
+      <list>
+        <option value="$PROJECT_DIR$/.idea/setup-ipsec-vpn.iml" />
+        <option value="$PROJECT_DIR$/.idea/vcs.xml" />
+        <option value="$PROJECT_DIR$/.idea/misc.xml" />
+        <option value="$PROJECT_DIR$/.idea/modules.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectFrameBounds" extendedState="6">
+    <option name="x" value="-30" />
+    <option name="y" value="23" />
+    <option name="width" value="1680" />
+    <option name="height" value="973" />
+  </component>
+  <component name="ProjectView">
+    <navigator proportions="" version="1">
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="ProjectPane">
+        <subPane>
+          <expand>
+            <path>
+              <item name="setup-ipsec-vpn" type="b2602c69:ProjectViewProjectNode" />
+              <item name="setup-ipsec-vpn" type="462c0819:PsiDirectoryNode" />
+            </path>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
+      <pane id="Scope" />
+    </panes>
+  </component>
+  <component name="PropertiesComponent">
+    <property name="WebServerToolWindowFactoryState" value="true" />
+    <property name="configurable.Global.GOPATH.is.expanded" value="true" />
+    <property name="configurable.Project.GOPATH.is.expanded" value="true" />
+    <property name="go.gopath.indexing.explicitly.defined" value="true" />
+    <property name="go.import.settings.migrated" value="true" />
+    <property name="go.sdk.automatically.set" value="true" />
+    <property name="last_opened_file_path" value="$USER_HOME$" />
+    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
+    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
+    <property name="settings.editor.selected.configurable" value="Errors" />
+  </component>
+  <component name="RunDashboard">
+    <option name="ruleStates">
+      <list>
+        <RuleState>
+          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
+        </RuleState>
+        <RuleState>
+          <option name="name" value="StatusDashboardGroupingRule" />
+        </RuleState>
+      </list>
+    </option>
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="0" y="23" width="1680" height="973" extended-state="6" />
+    <editor active="true" />
+    <layout>
+      <window_info id="Favorites" side_tool="true" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.24969475" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info anchor="bottom" id="Docker" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Database Changes" />
+      <window_info anchor="bottom" id="Version Control" />
+      <window_info anchor="bottom" id="Terminal" />
+      <window_info anchor="bottom" id="Event Log" side_tool="true" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="bottom" id="Run" order="2" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="right" id="Remote Host" />
+      <window_info anchor="right" id="Database" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+    </layout>
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="1" />
+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/docs/clients.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="SPLIT">
+          <first_editor relative-caret-position="430">
+            <caret line="419" column="6" selection-start-line="419" selection-start-column="6" selection-end-line="419" selection-end-column="6" />
+          </first_editor>
+          <second_editor />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/docs/clients-zh.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="SPLIT">
+          <first_editor relative-caret-position="289">
+            <caret line="185" column="45" selection-start-line="185" selection-start-column="45" selection-end-line="185" selection-end-column="45" />
+          </first_editor>
+          <second_editor />
+        </state>
+      </provider>
+    </entry>
+  </component>
+  <component name="masterDetails">
+    <states>
+      <state key="Copyright.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ScopeChooserConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </component>
+</project>
\ No newline at end of file
diff --git a/docs/clients-zh.md b/docs/clients-zh.md
index c828583..adc19e4 100644
--- a/docs/clients-zh.md
+++ b/docs/clients-zh.md
@@ -182,8 +182,8 @@ Ubuntu 18.04 （和更新版本）用户可以安装 <a href="https://packages.u
 1. 保持 **Gateway ID** 字段空白。
 1. 在 **Pre-shared key** 字段中输入`你的 VPN IPsec PSK`。
 1. 展开 **Advanced** 部分。
-1. 在 **Phase1 Algorithms** 字段中输入 `aes128-sha1-modp2048!`。
-1. 在 **Phase2 Algorithms** 字段中输入 `aes128-sha1-modp2048!`。
+1. 在 **Phase1 Algorithms** 字段中输入 `aes128-sha1-modp2048`。
+1. 在 **Phase2 Algorithms** 字段中输入 `aes128-sha1`。
 1. 单击 **OK**，然后单击 **Add** 保存 VPN 连接信息。
 1. 启用 **VPN** 连接。
 
diff --git a/docs/clients.md b/docs/clients.md
index e2e1a56..20cdde9 100644
--- a/docs/clients.md
+++ b/docs/clients.md
@@ -182,8 +182,8 @@ Ubuntu 18.04 (and newer) users can install the <a href="https://packages.ubuntu.
 1. Leave the **Gateway ID** field blank.
 1. Enter `Your VPN IPsec PSK` for the **Pre-shared key**.
 1. Expand the **Advanced** section.
-1. Enter `aes128-sha1-modp2048!` for the **Phase1 Algorithms**.
-1. Enter `aes128-sha1-modp2048!` for the **Phase2 Algorithms**.
+1. Enter `aes128-sha1-modp2048` for the **Phase1 Algorithms**.
+1. Enter `aes128-sha1` for the **Phase2 Algorithms**.
 1. Click **OK**, then click **Add** to save the VPN connection information.
 1. Turn the **VPN** switch ON.