如何让 Apache 访问 ubuntu 上的 ip-tables

我在一个新Ubuntu 14.04.5 x64盒子上运行了下面的脚本。它的工作原理是 apache 按预期阻止我的 IP 地址以处理太多请求。但是，我的 IP 地址没有添加到iptables. 我只是得到一个标准的 403，但我希望数据包被丢弃而没有错误。

我认为问题在于apache无法运行的权限ip-tables。但我无法弄清楚，因为我已经让apache用户www-data能够iptables在sudoers文件中运行。

任何帮助表示赞赏，我整天都在为此烦恼！

#!/bin/sh

apt-get update
apt-get -y install apache2

# Install mod evasive
apt-get -y install libapache2-mod-evasive

# Enable it
a2enmod evasive
a2enconf evasive

# Create log directory
mkdir /var/log/mod_evasive
chown -R www-data:www-data /var/log/mod_evasive

# Config for mod evasive
cat <<'EOF' > /etc/apache2/mods-available/evasive.conf
  <IfModule mod_evasive20.c>
      DOSHashTableSize     3097

      # Allow 5 requests for the same resource request per second. Per-IP
      DOSPageCount          5
      DOSPageInterval       1

      # Allow up to 50 requests across the domain per second. Per-IP
      DOSSiteCount          50
      DOSSiteInterval       1

      # Block user by IP for 60 minutes
      DOSBlockingPeriod     60

      DOSSystemCommand      "sudo /usr/local/bin/ban_ip.sh %s"

      DOSLogDir             /var/log/mod_evasive
      DOSWhitelist          188.88.90.71
      DOSWhitelist          188.88.90.72
      DOSWhitelist          188.88.90.73
  </IfModule>
EOF

# Config for banning users
cat <<'EOF' > /usr/local/bin/ban_ip.sh
#!/bin/sh

# Offending IP as detected by mod_evasive
IP=$1

# Path to iptables binary executed by user www-data through sudo
IPTABLES="/sbin/iptables"

# mod_evasive lock directory
MOD_EVASIVE_LOGDIR=/var/log/mod_evasive

# Add the following firewall rule (block IP)
sudo $IPTABLES -I INPUT -s $IP -j DROP

# Unblock offending IP after 2 hours through the 'at' command; see 'man at' for further details
echo "sudo $IPTABLES -D INPUT -s $IP -j DROP" | sudo at now + 1 minute

# Remove lock file for future checks
sudo rm -f "$MOD_EVASIVE_LOGDIR"/dos-"$IP"
EOF

echo 'www-data ALL=NOPASSWD: /sbin/iptables *, /usr/bin/at *' | EDITOR='tee -a' visudo