0.0.0.0 IGMP spam in WAN log & LAN traffic being blocked
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This IGMP log flood does NOT come from anything user configured and CANNOT be stopped by anything user configured.
Does that mean that every installation since 2.2. is affected? I somehow doubt that, not seeing it with other installs at clients.
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Whether or not you see it depends on whether or not you are being hit by IGMP traffic.
https://forum.pfsense.org/index.php?topic=88029.0
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Starts to make sense, thanks.
I know which install I surely will not update until this is solved… -
Hi!
I had to change my 'DSL-modem (now: Draytek Vigor 130 in modem mode) and since then (2 days) I have spam from 0.0.0.0 to 255.255.255.255 port 4944 on the WAN interface of my pfSense (2.2.1 nano 386).
I have a block rule without logging on top of the WAN rules, but the log spamming continues…
Solved the issue with my Draytek Vigor 130 by UNmarking "Broadcast DSL status to LAN" under ->System Maintenance->Management
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Cool! Any way to access the Draytek through the pfSense or do I need to remove it before I can reach the Draytek's weg GUI?
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Cool! Any way to access the Draytek through the pfSense or do I need to remove it before I can reach the Draytek's weg GUI?
Yes: https://doc.pfsense.org/index.php/Accessing_modem_from_inside_firewall ;)
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The root cause here is fixed in 2.2.3.
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Ok, thanks for your 2.2.3 note, but the thread was hijacked ;)
2chemlud, your logs clearly show UDP traffic to a broadcast address. This thread is about IGMP to a multicast address. Please don't hijack.
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Ok, thanks for your 2.2.3 note, but the thread was hijacked ;)
My comment there was re: the original issue, multicast firewall log spam.
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The problem is still present on my pfsense setup in VM with 2.2.3 installed.
Unchecked both log bogon networks block rule and private networks block rule.
Also created a custom rule to block igmp on lan interface.
No joy.EDIT: I fixed it by patching /etc/inc/filter_log.inc
In function conv_log_filter added the following lines in the foreach ($logarr as $logent) loop:if (strpos($logent,"igmp") !== false)
continue;Crude, but does the job.
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Thank you Bronko, Solved the problem for me too !
After pulling my hair out wondering why my firewall logs where filled with 0.0.0.0 to 255.255.255.255 port 4944 I stumbled on this post.
I am on pfsense 2.3.4-RELEASE with pfblockerng installed, its been working pretty good for me but a few days ago I changed over from ADSL to VDSL and swapped the modem to a vigor 130, unticking the 'Broadcast DSL status to LAN' in the vigor settings fixed it.
This broadcast to LAN is I believe used to keep a connection in a vigor router alive so the modem logs can be accessed inside the router.
I access my modem by using the https://doc.pfsense.org/index.php/Accessing_modem_from_inside_firewall guide, its worked with every modem i have used but the vigor 130 is the first one thats filled the logs ! I still have the occasional IGMP showing up:
MODEMACCESS 192.168.x.x 224.0.0.1 IGMP
Not a problem yet as seems to be only when i have the modem Admin page open.
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