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-rw-r--r--config/snort/snort.inc6
-rw-r--r--config/snort/snort_interfaces_edit.php10
2 files changed, 14 insertions, 2 deletions
diff --git a/config/snort/snort.inc b/config/snort/snort.inc
index cf05be67..d9dec153 100644
--- a/config/snort/snort.inc
+++ b/config/snort/snort.inc
@@ -1292,6 +1292,10 @@ EOD;
}
}
+ $cksumcheck = "all";
+ if ($snortcfg['cksumcheck'] == 'on')
+ $cksumcheck = "none";
+
/* build snort configuration file */
$snort_conf_text = <<<EOD
@@ -1313,7 +1317,7 @@ var PREPROC_RULE_PATH {$snortdir}/preproc_rules
{$portvardef}
# Configure the snort decoder #
-config checksum_mode: all
+config checksum_mode: {$cksumcheck}
config disable_decode_alerts
config disable_tcpopt_experimental_alerts
config disable_tcpopt_obsolete_alerts
diff --git a/config/snort/snort_interfaces_edit.php b/config/snort/snort_interfaces_edit.php
index 4e453fc7..06a1d6f4 100644
--- a/config/snort/snort_interfaces_edit.php
+++ b/config/snort/snort_interfaces_edit.php
@@ -106,6 +106,7 @@ if ($_POST["Submit"]) {
if ($_POST['tcpdumplog'] == "on") { $natent['tcpdumplog'] = 'on'; } else{ $natent['tcpdumplog'] = 'off'; }
if ($_POST['snortunifiedlog'] == "on") { $natent['snortunifiedlog'] = 'on'; }else{ $natent['snortunifiedlog'] = 'off'; }
if ($_POST['configpassthru']) $natent['configpassthru'] = base64_encode($_POST['configpassthru']); else unset($natent['configpassthru']);
+ if ($_POST['cksumcheck']) $natent['cksumcheck'] = 'on'; else $natent['cksumcheck'] = 'off';
$if_real = snort_get_real_interface($natent['interface']);
if (isset($id) && $a_rule[$id]) {
@@ -394,7 +395,14 @@ function enable_change(enable_change) {
will like this rule to use. </span><br/>&nbsp;<br/><span class="red">Note:</span><br/>&nbsp;Default
option disables suppression and filtering.</td>
</tr>
-
+ <tr>
+ <td width="22%" valign="top" class="vncell">Checksum checking</td>
+ <td width="78%" class="vtable">
+ <input name="cksumcheck" id="cksumcheck" type="checkbox" value="on" <?php if ($pconfig['cksumcheck'] == "on") echo "checked"; ?>>
+ <br/>If ticked checksum checking on snort will be disabled to improve performance.
+ <br/>Most of this is already done on the firewall/filter level
+ </td>
+ </tr>
<tr>
<td colspan="2" valign="top" class="listtopic">Choose the types of
logs snort should create.</td>