IP6tables issue

I have a fully patched centos 7 x64 box which sole purpose is an off-net DNS resolver. we disabled firewalld and installed the iptables-services package.

We have a rule like below for IPv4:

-A INPUT -i enp4s0f0 -m state --state NEW -s [login to view URL] -m tcp -p tcp --dport 22 -j ACCEPT

The IPv4 rule works great.

We originally had the following IPv6 rule:

-A INPUT -i enp4s0f0 -m state --state NEW -s 2620:128:7000::/44 -m tcp -p tcp --dport 22 -j ACCEPT

No IPv6 traffic was allowed to pass at all. So, We altered the rule to:

-A INPUT -i enp4s0f0 -s 2620:128:7000::/44 -p tcp --dport 22 -j ACCEPT

Still, no IPv6 traffic was allowed to pass at all.

I need a freelancer to find out why ip6tables is blocking ALL IPv6 traffic, including traffic allowed by rule. Fix it. Then show and explain to us what was wrong so we can avoid this issue in the future.

We are are hiring at Expert level (50.00/hour). Since we are hiring an expert we are not expecting more than 4 hours.

The rules are shown in the /etc/sysconfig/ip6tables file. Also, 'iptables -L' shows the rules after a service restart.

See the attached file ip6tables_output.txt for the output of the 'sudo ip6tables -L' command.

Compétences : Linux, Administration Système

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Concernant l'employeur :
( 8 commentaires ) Louisville, United States

Nº du projet : #17525108

Décerné à:


I am a Linux admin have 8 years of experience in this field. I worked in webhosting industry and manage datacenter from remote. I will fix the IPV6 firewall issue for you this will not take more then 2 hours of time. I Plus

$55 USD / heure
(5 Commentaires)

11 freelance font une offre moyenne de $51/heure pour ce travail


I can troubleshoot this issue with ip6tables. Let me know when we can start

$50 USD / heure
(38 Commentaires)

Hello, I can help you with this . I am certified IPv6 engineer and can help you with v6 iptables. Let's talk more in details Thank you

$55 USD / heure
(7 Commentaires)
$50 USD / heure
(10 Commentaires)

As an engineer and manager I challenge and enjoyed being challenged, and I have a reputation for producing the best product experience, irrespective of its category. I am an experienced Linux, System Admin developer w Plus

$50 USD / heure
(1 Évaluation)

Hi i can help you with this task. Did you save after you added iptables [login to view URL] me check your rules please

$50 USD / heure
(2 Commentaires)

Hi I am an Engineering undergraduate experienced in linux, debian systems and security for more than 4 years. I can help you to resolve this issue. Please message to discuss further on this Thanks Note-please check Plus

$50 USD / heure
(1 Évaluation)

Hello, I am an RHCE certified System Administrator. I am available to have a look at the issue. Do let me know if you are interested. I would prefer giving me 4 to 6 hours for the troubleshooting. Thanks.

$50 USD / heure
(1 Évaluation)

9 years of experience in server installation and maintenance 9 years of experience in server installation and maintenance

$55 USD / heure
(0 Commentaires)

Hi, I can help you with this. I got vat experience of dealing with FW and can get you out of this situation at lowest possible rates.

$50 USD / heure
(0 Commentaires)

Dear Client, Thanks for providing opportunity to bid on the project I have 8+ years of experience in making site on php using myql from scrap. Some of the PHP sites are:- [login to view URL] http Plus

$50 USD / heure
(0 Commentaires)