69 lines
2.5 KiB
PHP
69 lines
2.5 KiB
PHP
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<?php
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// pfSense NAT redirect flip — mail ports 25/465/587/993 from
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// <mailserver> alias (10.0.20.202 MetalLB LB) to pfSense's own HAProxy
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// listener (10.0.20.1). bd code-yiu.
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//
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// THIS IS THE CUTOVER. After this script:
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// Internet → pfSense WAN:{25,465,587,993} → rdr → 10.0.20.1:{...}
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// (pfSense HAProxy) → send-proxy-v2 → k8s-node:{30125..30128} NodePort
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// → kube-proxy → mailserver pod alt listeners (2525/4465/5587/10993)
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// → Postfix/Dovecot parse PROXY v2 → real client IP recovered.
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//
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// Internal clients (Roundcube, email-roundtrip-monitor CronJob) continue
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// using the existing mailserver ClusterIP Service on the stock ports
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// (25/465/587/993) which hit container stock listeners WITHOUT PROXY.
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// No change to internal traffic paths.
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//
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// USAGE
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// scp infra/scripts/pfsense-nat-mailserver-haproxy-flip.php admin@10.0.20.1:/tmp/
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// ssh admin@10.0.20.1 'php /tmp/pfsense-nat-mailserver-haproxy-flip.php'
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//
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// REVERT — run pfsense-nat-mailserver-haproxy-unflip.php (companion script).
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//
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// IDEMPOTENT — re-runs converge. Flips nothing if already pointed at 10.0.20.1.
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require_once('/etc/inc/config.inc');
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require_once('/etc/inc/filter.inc');
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global $config;
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parse_config(true);
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$PORTS_TO_FLIP = ['25', '465', '587', '993'];
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$OLD_TARGET = 'mailserver';
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$NEW_TARGET = '10.0.20.1';
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$changed = 0;
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foreach ($config['nat']['rule'] as $i => &$r) {
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$iface = $r['interface'] ?? '';
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$lport = $r['local-port'] ?? '';
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$tgt = $r['target'] ?? '';
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if ($iface !== 'wan') continue;
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if (!in_array($lport, $PORTS_TO_FLIP, true)) continue;
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if ($tgt !== $OLD_TARGET) {
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printf("rule %d (dport=%s) target=%s — not flipping (already %s or unexpected)\n",
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$i, $lport, $tgt, $NEW_TARGET);
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continue;
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}
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$r['target'] = $NEW_TARGET;
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// Also unset the 'associated-rule-id' linked filter rule target if any —
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// actually pfSense regenerates the associated rule from NAT rule on apply,
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// so leaving associated-rule-id intact is fine.
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$changed++;
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printf("rule %d (dport=%s): target %s → %s\n", $i, $lport, $OLD_TARGET, $NEW_TARGET);
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}
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unset($r);
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if ($changed === 0) {
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echo "No changes. (Already flipped? Run unflip script to revert.)\n";
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exit(0);
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}
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write_config("code-yiu: NAT rdr — mail ports {$changed} flipped to HAProxy (10.0.20.1)");
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// Rebuild pf rules & reload.
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$rc = filter_configure();
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printf("filter_configure rc=%s\n", var_export($rc, true));
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echo "done.\n";
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