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receiver iptables filtering in 11.4.4

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Recently upgraded test ESM to 11.4.4 and discovered the command that we used to run to verify if ERC is listening from a certain DS ip is no longer showing anything. Is this normal?

For example, a syslog type DS on 10.10.10.10 write out from ESM to ERC, under ERC, run a command of iptables -n -v -L | grep 10.10.10.10 used to show TCP and UDP 514 is open against 10.10.10.10. Thanks.

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lratcliffe
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Re: receiver iptables filtering in 11.4.4

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To improve firewall performance with large numbers of syslog datasources the syslog rules have been moved to ipset, you can see this in the iptables output:

3044 789K FILTER all -- * * 0.0.0.0/0 0.0.0.0/0 match-set siem_ipset_tcp src,dst
76 38589 FILTER all -- * * 0.0.0.0/0 0.0.0.0/0 match-set siem_ipset_udp src,dst

Use `ipset list` to list the configuration.


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SSSSYYYY
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Re: receiver iptables filtering in 11.4.4

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Did a DS Health Check via GUI, it says:

INFO Found iplist entry: 10.10.10.10,tcp:514

INFO Found iplist entry: 10.10.10.10,udp:514

OK Found firewall rule(s) to premit traffic in. 

Is there way to check this quickly on ERC CLI? 

https://kc.mcafee.com/corporate/index?page=content&id=KB82387&actp=null&viewlocale=en_US

lratcliffe
McAfee Employee
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Message 3 of 3

Re: receiver iptables filtering in 11.4.4

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To improve firewall performance with large numbers of syslog datasources the syslog rules have been moved to ipset, you can see this in the iptables output:

3044 789K FILTER all -- * * 0.0.0.0/0 0.0.0.0/0 match-set siem_ipset_tcp src,dst
76 38589 FILTER all -- * * 0.0.0.0/0 0.0.0.0/0 match-set siem_ipset_udp src,dst

Use `ipset list` to list the configuration.


Was my reply helpful?

If this information was helpful in any way or answered your question, will you please select Accept as Solution in my reply and together we can help other members?

View solution in original post

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