配置(工具): 添加 DNS 配置与防火墙脚本及本地权限设置

- 添加 DNS 全局配置脚本（含 IPv6 禁用、有线网卡静态 IP） - 添加 UFW 防火墙配置脚本（默认拒绝入站、允许出站） - 添加 Claude Code 本地权限与记忆配置
2026-06-08 14:59:16 +08:00
parent cde5c637b4
commit 919124af89
3 changed files with 472 additions and 0 deletions
@@ -0,0 +1,15 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(*)"
+    ],
+    "deny": [
+      "mcp__pencil"
+    ]
+  },
+  "enabledPlugins": {},
+  "outputStyle": "default",
+  "spinnerTipsEnabled": false,
+  "autoMemoryEnabled": true,
+  "autoMemoryDirectory": "/data/git/gitea/szis/isos/tech/.claude/memory"
+}
@@ -0,0 +1,402 @@
+#!/usr/bin/env bash
+# ============================================================
+# DNS 全局配置脚本（含 IPv6 禁用 + 有线网卡静态 IP）
+# 功能:
+#   1. 全局固定 DNS（深圳电信）
+#   2. 全局禁用 IPv6（sysctl + GRUB + NM）
+#   3. 有线网卡支持用户输入静态 IP
+# 用法: sudo bash dns_setup.sh
+# ============================================================
+
+set -euo pipefail
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+DNS_SERVERS="202.96.128.143 202.96.128.68 202.96.134.133 202.96.128.86 202.96.128.166"
+GRUB_FILE="/etc/default/grub"
+TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S')
+NOW_TS=$(date +%Y%m%d%H%M%S)
+
+echo "========================================"
+echo "   DNS 全局配置 + IPv6 禁用脚本"
+echo "========================================"
+echo ""
+
+# 检查 root
+if [[ $EUID -ne 0 ]]; then
+    echo -e "${RED}[错误] 请使用 sudo 运行此脚本${NC}"
+    exit 1
+fi
+
+# ──────────────────────────────────────────
+# 步骤 1: 配置 systemd-resolved 全局 DNS
+# ──────────────────────────────────────────
+echo "==> 步骤 1/6: 配置 systemd-resolved 全局 DNS"
+
+if [[ ! -f /etc/systemd/resolved.conf.bak ]]; then
+    cp /etc/systemd/resolved.conf /etc/systemd/resolved.conf.bak
+    echo -e "${GREEN}[备份] /etc/systemd/resolved.conf → resolved.conf.bak${NC}"
+fi
+
+cat > /etc/systemd/resolved.conf <<EOF
+# systemd-resolved 配置文件
+# 由 dns_setup.sh 生成 (${TIMESTAMP})
+# 备份: /etc/systemd/resolved.conf.bak
+
+[Resolve]
+DNS=${DNS_SERVERS}
+LLMNR=no
+MulticastDNS=no
+DNSSEC=no
+DNSOverTLS=no
+Cache=yes
+EOF
+
+echo -e "${GREEN}[完成] 全局 DNS: ${DNS_SERVERS}${NC}"
+
+# ──────────────────────────────────────────
+# 步骤 2: sysctl 全局禁用 IPv6
+# ──────────────────────────────────────────
+echo ""
+echo "==> 步骤 2/6: sysctl 全局禁用 IPv6"
+
+cat > /etc/sysctl.d/99-disable-ipv6.conf <<EOF
+# 全局禁用 IPv6
+# 由 dns_setup.sh 生成 (${TIMESTAMP})
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+net.ipv6.conf.lo.disable_ipv6 = 1
+EOF
+
+sysctl --system &>/dev/null
+echo -e "${GREEN}[完成] IPv6 已全局禁用 (sysctl)${NC}"
+
+if [[ "$(cat /proc/sys/net/ipv6/conf/all/disable_ipv6)" == "1" ]]; then
+    echo -e "${GREEN}[验证] /proc/sys/net/ipv6/conf/all/disable_ipv6 = 1 ✓${NC}"
+fi
+
+# ──────────────────────────────────────────
+# 步骤 3: GRUB 内核参数禁用 IPv6
+# ──────────────────────────────────────────
+echo ""
+echo "==> 步骤 3/6: GRUB 内核参数禁用 IPv6"
+
+if grep -q "ipv6.disable=1" "$GRUB_FILE" 2>/dev/null; then
+    echo "[跳过] GRUB 已包含 ipv6.disable=1"
+else
+    cp "$GRUB_FILE" "${GRUB_FILE}.bak.${NOW_TS}"
+    sed -i 's/^GRUB_CMDLINE_LINUX_DEFAULT="\(.*\)"/GRUB_CMDLINE_LINUX_DEFAULT="\1 ipv6.disable=1"/' "$GRUB_FILE"
+    sed -i 's/^GRUB_CMDLINE_LINUX="\(.*\)"/GRUB_CMDLINE_LINUX="\1 ipv6.disable=1"/' "$GRUB_FILE"
+    update-grub &>/dev/null || grub2-mkconfig -o /boot/grub2/grub.cfg &>/dev/null
+    echo -e "${GREEN}[完成] GRUB 内核参数已添加 ipv6.disable=1${NC}"
+    echo -e "${YELLOW}[提示] GRUB 修改需重启后生效${NC}"
+fi
+
+# ──────────────────────────────────────────
+# 步骤 4: 有线网卡静态 IP 配置（含重复检测与清理）
+# ──────────────────────────────────────────
+echo ""
+echo "==> 步骤 4/6: 有线网卡检测与静态 IP 配置"
+echo ""
+
+# 收集所有有线网卡连接，按接口分组
+declare -A IFACE_CONNS  # 接口 -> "uuid|cname|uuid|cname|..." (用换行分隔多个)
+while IFS= read -r uuid; do
+    ctype=$(nmcli -t -f connection.type connection show uuid "$uuid" 2>/dev/null | cut -d: -f2-)
+    cname=$(nmcli -t -f connection.id connection show uuid "$uuid" 2>/dev/null | cut -d: -f2-)
+    iface=$(nmcli -t -f connection.interface-name connection show uuid "$uuid" 2>/dev/null | cut -d: -f2-)
+    if [[ "$ctype" == "802-3-ethernet" ]]; then
+        if [[ -n "${IFACE_CONNS[$iface]:-}" ]]; then
+            IFACE_CONNS[$iface]="${IFACE_CONNS[$iface]}
+$uuid|$cname"
+        else
+            IFACE_CONNS[$iface]="$uuid|$cname"
+        fi
+    fi
+done < <(nmcli -t -f UUID connection show 2>/dev/null)
+
+if [[ ${#IFACE_CONNS[@]} -eq 0 ]]; then
+    echo "  未检测到有线网卡连接，跳过。"
+else
+    NETPLAN_DIR="/etc/netplan"
+
+    for iface in "${!IFACE_CONNS[@]}"; do
+        # 解析该接口的所有连接
+        mapfile -t entries <<< "${IFACE_CONNS[$iface]}"
+
+        if [[ ${#entries[@]} -gt 1 ]]; then
+            echo ""
+            echo -e "  ${YELLOW}══════════════════════════════════════${NC}"
+            echo -e "  ${YELLOW}  检测到接口 [$iface] 有 ${#entries[@]} 个重复连接${NC}"
+            echo -e "  ${YELLOW}══════════════════════════════════════${NC}"
+
+            # 找出活跃连接（有 IP 的）
+            active_entry=""
+            stale_uuids=()
+            for e in "${entries[@]}"; do
+                IFS='|' read -r euuid ecname <<< "$e"
+                eip=$(ip -4 addr show "$iface" 2>/dev/null | grep -oP 'inet \K[\d.]+/[\d]+' | head -1)
+                estate=$(nmcli -t -f GENERAL.STATE connection show uuid "$euuid" 2>/dev/null | cut -d: -f2-)
+
+                echo ""
+                echo "    [$ecname]  UUID: $euuid"
+                echo "    当前 NM 状态: ${estate:-未知}"
+
+                if [[ -n "$eip" ]]; then
+                    # 检查该连接的 IP 是否匹配接口 IP
+                    conn_ip=$(nmcli -t -f IP4.ADDRESS connection show uuid "$euuid" 2>/dev/null | cut -d: -f2- | head -1 | cut -d'/' -f1 | cut -d' ' -f1)
+                    iface_ip=$(echo "$eip" | cut -d'/' -f1)
+                    if [[ "$conn_ip" == "$iface_ip" ]] || [[ "$estate" == "activated" ]]; then
+                        active_entry="$e"
+                        echo -e "    ${GREEN}◎ 活跃（当前使用中）${NC}"
+                    else
+                        stale_uuids+=("$euuid")
+                        echo -e "    ${YELLOW}⊙ 残留/非活跃${NC}"
+                    fi
+                else
+                    stale_uuids+=("$euuid")
+                    echo -e "    ${YELLOW}⊙ 无 IP，疑似残留${NC}"
+                fi
+            done
+
+            # 若未明确找到活跃连接，保留第一个，其余标记为残留
+            if [[ -z "$active_entry" ]]; then
+                active_entry="${entries[0]}"
+                stale_uuids=()
+                for ((i=1; i<${#entries[@]}; i++)); do
+                    IFS='|' read -r suuid scname <<< "${entries[$i]}"
+                    stale_uuids+=("$suuid")
+                done
+            fi
+
+            # 清理残留连接
+            if [[ ${#stale_uuids[@]} -gt 0 ]]; then
+                echo ""
+                echo -e "    ${YELLOW}将自动清理 ${#stale_uuids[@]} 个残留连接:${NC}"
+                for suuid in "${stale_uuids[@]}"; do
+                    sname=$(nmcli -t -f connection.id connection show uuid "$suuid" 2>/dev/null | cut -d: -f2-)
+                    echo "      - $sname ($suuid)"
+                done
+
+                read -r -p "    确认清理？[Y/n] " do_clean
+                if [[ ! "$do_clean" =~ ^[Nn]$ ]]; then
+                    for suuid in "${stale_uuids[@]}"; do
+                        sname=$(nmcli -t -f connection.id connection show uuid "$suuid" 2>/dev/null | cut -d: -f2-)
+                        nmcli connection delete "$suuid" 2>/dev/null || true
+                        rm -f "${NETPLAN_DIR}/90-NM-${suuid}.yaml"
+                        echo -e "    ${GREEN}✓ 已删除: $sname${NC}"
+                    done
+                else
+                    echo "    已跳过清理。"
+                fi
+            fi
+
+            # 更新 entries 为仅保留活跃连接
+            entries=("$active_entry")
+        fi
+
+        # 对每个保留的有线连接，配置静态 IP
+        for e in "${entries[@]}"; do
+            IFS='|' read -r uuid cname <<< "$e"
+
+            echo ""
+            echo "────────────────────────────────────────"
+            echo "  有线网卡: $cname"
+            echo "  接口名:   $iface"
+            echo "  UUID:     $uuid"
+            echo ""
+
+            # 获取当前 IP 信息
+            cur_ip=""
+            cur_gw=""
+            if [[ -n "$iface" ]] && ip addr show "$iface" &>/dev/null; then
+                cur_ip=$(ip -4 addr show "$iface" 2>/dev/null | grep -oP 'inet \K[\d.]+/[\d]+' | head -1)
+                cur_gw=$(ip -4 route show default dev "$iface" 2>/dev/null | awk '{print $3}' | head -1)
+            fi
+
+            echo "  当前状态:"
+            echo "    IP 地址: ${cur_ip:-未获取}"
+            echo "    网关:    ${cur_gw:-未获取}"
+            echo ""
+
+            # 询问用户
+            read -r -p "  是否为此网卡设置静态 IP？[y/N] " set_static
+            if [[ ! "$set_static" =~ ^[Yy]$ ]]; then
+                echo -e "    ${YELLOW}⊙ 跳过静态 IP，仅固定 DNS${NC}"
+
+                cur_method=$(nmcli -t -f ipv4.method connection show uuid "$uuid" 2>/dev/null | cut -d: -f2-)
+                if [[ "$cur_method" == "link-local" ]]; then
+                    echo -e "    ${YELLOW}⊙ method=link-local，切换到 auto 以支持 DNS${NC}"
+                    nmcli connection modify "$uuid" ipv4.method auto
+                fi
+                nmcli connection modify "$uuid" ipv4.ignore-auto-dns yes
+                nmcli connection modify "$uuid" ipv4.dns "${DNS_SERVERS// /,}"
+                nmcli connection modify "$uuid" ipv6.method disabled
+                continue
+            fi
+
+            # 输入静态 IP
+            while true; do
+                read -r -p "  请输入静态 IP 地址 (格式: x.x.x.x/yy): " static_ip
+                if [[ "$static_ip" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/[0-9]+$ ]]; then
+                    break
+                fi
+                echo -e "    ${RED}格式错误，示例: 192.168.1.90/24${NC}"
+            done
+
+            # 输入网关
+            read -r -p "  请输入网关地址 (回车使用检测值 ${cur_gw:-无}): " static_gw
+            if [[ -z "$static_gw" ]]; then
+                static_gw="$cur_gw"
+            fi
+            if [[ -z "$static_gw" ]]; then
+                echo -e "    ${RED}[错误] 网关不能为空${NC}"
+                continue
+            fi
+
+            echo ""
+            echo "  即将应用以下配置:"
+            echo "    连接名:  $cname"
+            echo "    接口:    $iface"
+            echo "    IP:      $static_ip"
+            echo "    网关:    $static_gw"
+            echo "    DNS:     $(echo "$DNS_SERVERS" | tr ' ' ',')"
+            echo "    IPv6:    禁用"
+            echo ""
+
+            read -r -p "  确认应用？[Y/n] " confirm
+            if [[ "$confirm" =~ ^[Nn]$ ]]; then
+                echo -e "    ${YELLOW}⊙ 已取消${NC}"
+                continue
+            fi
+
+            # ── 应用 NM 配置 ──
+            nmcli connection modify "$uuid" \
+                ipv4.method manual \
+                ipv4.addresses "$static_ip" \
+                ipv4.gateway "$static_gw" \
+                ipv4.dns "${DNS_SERVERS// /,}" \
+                ipv6.method disabled
+
+            echo -e "  ${GREEN}✓ NM 配置已写入${NC}"
+
+            # ── 同步 netplan ──
+            NETPLAN_FILE="${NETPLAN_DIR}/90-NM-${uuid}.yaml"
+
+            if [[ -d "$NETPLAN_DIR" ]]; then
+                [[ ! -d "${NETPLAN_DIR}.bak" ]] && cp -r "$NETPLAN_DIR" "${NETPLAN_DIR}.bak"
+
+                cat > "$NETPLAN_FILE" <<NETEOF
+network:
+  version: 2
+  ethernets:
+    ${iface}:
+      renderer: NetworkManager
+      match: {}
+      dhcp4: false
+      addresses:
+        - "${static_ip}"
+      routes:
+        - to: "0.0.0.0/0"
+          via: "${static_gw}"
+      nameservers:
+        addresses:
+$(for dns in $DNS_SERVERS; do echo "          - ${dns}"; done)
+      networkmanager:
+        uuid: "${uuid}"
+        name: "${cname}"
+        passthrough:
+          ipv6.method: "disabled"
+NETEOF
+
+                echo -e "  ${GREEN}✓ netplan 配置已同步 → ${NETPLAN_FILE}${NC}"
+
+                if netplan generate 2>/dev/null; then
+                    echo -e "  ${GREEN}✓ netplan 语法检查通过${NC}"
+                else
+                    echo -e "  ${YELLOW}⚠ netplan 语法检查有警告，请手动确认${NC}"
+                fi
+            fi
+
+            echo ""
+        done
+    done
+fi
+
+# ──────────────────────────────────────────
+# 步骤 5: 配置 NetworkManager 其余连接
+# ──────────────────────────────────────────
+echo ""
+echo "==> 步骤 5/6: 配置其余 NetworkManager 连接 (WiFi 等)"
+
+for conn in $(nmcli -t -f UUID connection show 2>/dev/null); do
+    ctype=$(nmcli -t -f connection.type connection show uuid "$conn" 2>/dev/null | cut -d: -f2-)
+    cname=$(nmcli -t -f connection.id connection show uuid "$conn" 2>/dev/null | cut -d: -f2-)
+
+    # 跳过回环
+    if [[ "$ctype" == "loopback" ]]; then
+        nmcli connection modify "$conn" ipv6.method auto 2>/dev/null || true
+        echo "  $cname → ${YELLOW}⊙ 回环，跳过${NC}"
+        continue
+    fi
+
+    # 有线网卡已在步骤 4 处理
+    if [[ "$ctype" == "802-3-ethernet" ]]; then
+        echo "  $cname → ${YELLOW}⊙ 有线网卡，已在步骤 4 处理${NC}"
+        continue
+    fi
+
+    # WiFi 等：固定 DNS + 禁用 IPv6
+    cur_method=$(nmcli -t -f ipv4.method connection show uuid "$conn" 2>/dev/null | cut -d: -f2-)
+    if [[ "$cur_method" == "link-local" ]]; then
+        nmcli connection modify "$conn" ipv4.method auto
+    fi
+
+    nmcli connection modify "$conn" ipv4.ignore-auto-dns yes
+    nmcli connection modify "$conn" ipv4.dns "${DNS_SERVERS// /,}"
+    nmcli connection modify "$conn" ipv6.method disabled
+
+    echo "  $cname (类型: $ctype) → ${GREEN}✓ DNS 固定 / IPv6 禁用${NC}"
+done
+
+# ──────────────────────────────────────────
+# 步骤 6: 重启服务
+# ──────────────────────────────────────────
+echo ""
+echo "==> 步骤 6/6: 重启服务"
+
+systemctl restart systemd-resolved
+echo -e "${GREEN}[完成] systemd-resolved 已重启${NC}"
+
+# ──────────────────────────────────────────
+# 状态汇总
+# ──────────────────────────────────────────
+echo ""
+echo "========================================"
+echo "           当前状态汇总"
+echo "========================================"
+
+echo ""
+echo "--- DNS 状态 ---"
+resolvectl status 2>&1 || true
+
+echo ""
+echo "--- IPv6 状态 ---"
+echo "sysctl disable_ipv6: $(cat /proc/sys/net/ipv6/conf/all/disable_ipv6 2>/dev/null || echo 'unknown')"
+ip -6 addr show 2>/dev/null | grep "inet6" || echo "(无 IPv6 地址)"
+
+echo ""
+echo "--- DNS 解析验证 ---"
+for domain in baidu.com qq.com; do
+    result=$(resolvectl query "$domain" 2>&1 || true)
+    echo "  $domain → $(echo "$result" | head -3)"
+done
+
+echo ""
+echo -e "${GREEN}全部配置完成！${NC}"
+echo ""
+echo -e "${YELLOW}提示: GRUB 修改需重启后完全生效。${NC}"
+echo -e "${YELLOW}      DNS / IPv6 变动需重连网络后生效。${NC}"
@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+# ============================================================
+# 防火墙配置脚本
+# 功能: 默认拒绝所有入站连接，启用 UFW 并设置开机自启
+# 用法: sudo bash firewall_setup.sh
+# ============================================================
+
+set -euo pipefail
+
+# 颜色输出
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+echo "========================================"
+echo "       防火墙配置脚本 (UFW)"
+echo "========================================"
+echo ""
+
+# 检查是否以 root 运行
+if [[ $EUID -ne 0 ]]; then
+    echo -e "${RED}[错误] 请使用 sudo 运行此脚本: sudo bash $0${NC}"
+    exit 1
+fi
+
+# 检查 UFW 是否已安装
+if ! command -v ufw &> /dev/null; then
+    echo -e "${RED}[错误] UFW 未安装，请先安装: apt install ufw${NC}"
+    exit 1
+fi
+
+echo ""
+echo "==> 步骤 1/3: 设置默认策略 — 拒绝所有入站连接"
+sudo ufw default deny incoming
+echo -e "${GREEN}[完成] 入站默认策略已设为 deny${NC}"
+
+echo ""
+echo "==> 步骤 2/3: 允许出站连接"
+sudo ufw default allow outgoing
+echo -e "${GREEN}[完成] 出站默认策略已设为 allow${NC}"
+
+echo ""
+echo "==> 步骤 3/3: 启用 UFW（开机自启）"
+sudo ufw --force enable
+echo -e "${GREEN}[完成] UFW 已启用并设为开机自启${NC}"
+
+echo ""
+echo "========================================"
+echo "          当前防火墙状态"
+echo "========================================"
+sudo ufw status verbose
+
+echo ""
+echo -e "${GREEN}防火墙配置完成！${NC}"