• If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread:
    CentOS2Alma discussion

Plesk DNS Firewall : No IPV6 Answer to ICMP Requests

SébastienR

New Pleskian
Hello,
I've discovered an annoying problem in Plesk 11.
When you register a .fr domain name, you need to have a Success ZoneCheck at http://www.afnic.fr/fr/produits-et-services/services/zonecheck/formulaire-complet/

The test fail because the server didn't answer to ICMP IPv6 requests.

Error: The server does not listen to or does not answer in UDP on the port 53 (on the IpV6)

My question is: How to open port 53 on IPv6 for ICMP requests ?

This is functional with IPv4 But not IPv6.

There are some rules in the Plesk Firewall, but it seems not working at all.

Thanks for your help !

----------------------------------------------------------------------------------------------

Same problem was reported but no answers to fix it.

May 2012 - It seems as if there's a problem with the IPv6 firewall ICMPv6 default settings : http://forum.parallels.com/showthread.php?t=259849

May 2011 - The IPv6 firewall rule for the Ping service is not getting correctly translated to an ICMPv6 rule in ip6table : http://forum.parallels.com/showpost.php?p=445697&postcount=41
 
---------------------------------------------------------------
PRODUCT, VERSION, MICROUPDATE, OPERATING SYSTEM, ARCHITECTURE
Plesk for linux 11.5.30 Update #47, centos 6, x64

PROBLEM DESCRIPTION
ipv6 connectivity doesn't work

STEPS TO REPRODUCE
Just install plesk firewall extension and apply the default configuration

ACTUAL RESULT
Domain is no more rechable using ipv6 connectivity, ipv6 dns does not respond. Ipv4 works normally

EXPECTED RESULT
Connectivity works both for ipv4 and ipv6

ANY ADDITIONAL INFORMATION
----------------------------------------------
the problem deccription given in the 2 treads linked in the first post are very accurate, they give more details than this template I think...
 
update: it seems to be a problem related to isconfiguration of ipv6 addresses and missing ipv6 gateway....

I ad to
1)go to ip list page, click on "reread IP", then found all ipv6 misconfigured, click repair for each of them
2)open ssh and add default gateway

then it started to work again
 
Back
Top