iptables v1.4.7

Usage: iptables -[AD] chain rule-specification [options]
       iptables -I chain [rulenum] rule-specification [options]
       iptables -R chain rulenum rule-specification [options]
       iptables -D chain rulenum [options]
       iptables -[LS] [chain [rulenum]] [options]
       iptables -[FZ] [chain] [options]
       iptables -[NX] chain
       iptables -E old-chain-name new-chain-name
       iptables -P chain target [options]
       iptables -h (print this help information)

Commands:
Either long or short options are allowed.
  --append  -A chain            Append to chain
  --delete  -D chain            Delete matching rule from chain
  --delete  -D chain rulenum
                                Delete rule rulenum (1 = first) from chain
  --insert  -I chain [rulenum]
                                Insert in chain as rulenum (default 1=first)
  --replace -R chain rulenum
                                Replace rule rulenum (1 = first) in chain
  --list    -L [chain [rulenum]]
                                List the rules in a chain or all chains
  --list-rules -S [chain [rulenum]]
                                Print the rules in a chain or all chains
  --flush   -F [chain]          Delete all rules in  chain or all chains
  --zero    -Z [chain [rulenum]]
                                Zero counters in chain or all chains
  --new     -N chain            Create a new user-defined chain
  --delete-chain
            -X [chain]          Delete a user-defined chain
  --policy  -P chain target
                                Change policy on chain to target
  --rename-chain
            -E old-chain new-chain
                                Change chain name, (moving any references)
Options:
[!] --proto     -p proto        protocol: by number or name, eg. `tcp'
[!] --source    -s address[/mask][...]
                                source specification
[!] --destination -d address[/mask][...]
                                destination specification
[!] --in-interface -i input name[+]
                                network interface name ([+] for wildcard)
 --jump -j target
                                target for rule (may load target extension)
  --goto      -g chain
                              jump to chain with no return
  --match       -m match
                                extended match (may load extension)
  --numeric     -n              numeric output of addresses and ports
[!] --out-interface -o output name[+]
                                network interface name ([+] for wildcard)
  --table       -t table        table to manipulate (default: `filter')
  --verbose     -v              verbose mode
  --line-numbers                print line numbers when listing
  --exact       -x              expand numbers (display exact values)
[!] --fragment  -f              match second or further fragments only
  --modprobe=          try to insert modules using this command
  --set-counters PKTS BYTES     set the counter during insert/append
[!] --version   -V              print package version.

// 错误输出
function halt($error) {
    $e = array();
    if (APP_DEBUG) {
        //调试模式下输出错误信息
        if (!is_array($error)) {
            $trace = debug_backtrace();
            $e['message'] = $error;
            $e['file'] = $trace[0]['file'];
            $e['class'] = $trace[0]['class'];
            $e['function'] = $trace[0]['function'];
            $e['line'] = $trace[0]['line'];
            $traceInfo = '';
            $time = date('y-m-d H:i:m');
            foreach ($trace as $t) {
                $traceInfo .= '[' . $time . '] ' . $t['file'] . ' (' . $t['line'] . ') ';
                $traceInfo .= $t['class'] . $t['type'] . $t['function'] . '(';
                $traceInfo .= implode(', ', $t['args']);
                $traceInfo .=')
';
            }
            $e['trace'] = $traceInfo;
        } else {
            $e = $error;
        }
        // 包含异常页面模板
        include C('TMPL_EXCEPTION_FILE');
    } else {
        //否则定向到错误页面
        $error_page = C('ERROR_PAGE');
        if (!empty($error_page)) {
            redirect($error_page);
        } else {
            if (C('SHOW_ERROR_MSG'))
                $e['message'] = is_array($error) ? $error['message'] : $error;
            else
                $e['message'] = C('ERROR_MESSAGE');
            // 包含异常页面模板
            include C('TMPL_EXCEPTION_FILE');
        }
    }
    exit;
}