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Questions tagged [ip6tables]

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21 questions
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0 votes
1 answer
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I just installed Linux Mint 22 Cinnamon for the second time in one week, really frustrating. Reason being that after I have set up almost everything same as in Linux Mint 21.3 Cinnamon in a couple ...
Vlastimil Burián's user avatar
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2 votes
1 answer
3k views

The ip6tables command accepts icmp and icmpv6 protocols: $ sudo ip6tables -A INPUT -p icmp -j ACCEPT $ sudo ip6tables -A INPUT -p ipv6-icmp -j ACCEPT However, when I test with the ping6 command: $ ...
Alexis Wilke's user avatar
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1 answer
438 views

I am parsing ufw logs, and running into limitations with the documentation that I am able to find for the ip6tables entries for ufw. This very nice blog post describes the iptables format well, but ...
Jennifer's user avatar
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0 answers
291 views

Context: Multiple docker containers listening on all interfaces wireguard wg0 interface with an IPv6 address eventually, NFS serving files to wg0 clients Issue: Clients behind wg0 can access these ...
MayeulC's user avatar
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6 votes
1 answer
1k views

Why do we need to have an ip6tables rule for DHCP6? (IPv4 does not require it by contrast) Here's minimal IPv4 rules written by me, you see no special DHCPv4 (Wikipedia) rule: IPv4: iptables --list-...
Vlastimil Burián's user avatar
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0 votes
1 answer
302 views

I undetstand that mangle is used to alter the headers of the packet. But I couldn't understand what exactly the following command will do? ip6tables -t mangle -A OUTPUT -s '1955:1890:1401:24FF::/64' -...
bhr's user avatar
  • 103
0 votes
2 answers
5k views

My iptables output looks like this: Chain INPUT (policy ACCEPT) num target prot opt source destination 1 DROP all -- 0.0.0.0/0 0.0.0.0/0 ...
Dan's user avatar
  • 203
0 votes
0 answers
211 views

How do I turn my iptables rules to ip6tables rules? I am getting a Bad Address: iptables -A OUTPUT -p tcp -j ALLOW iptables -t nat -A PREROUTING -d 192.168.0.0/24 -i eth0 -j DNAT --to 192.168.255....
Jim's user avatar
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5 votes
1 answer
7k views

I have the below iptable rule in /etc/iptables/rule.V6 and /etc/iptables/rule.V4 -4 -A INPUT -p icmp -j ACCEPT -6 -A INPUT -p ipv6-icmp -j ACCEPT when I tried to restart the netfilter-persistent, it ...
Karthik's user avatar
  • 189
3 votes
1 answer
101 views

I have fairly complex iptables/ip6tables rules affecting multiple interfaces. I would like to make sure, that firewall rules are always in place. As one can create rules even for (at that moment) non-...
Martin's user avatar
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13 votes
2 answers
15k views

I had a problem where I lost connectivity to a server on the IPv6 address after some time and it turned out to be caused by DHCPv6 client packets (port 546) being dropped by the default INPUT policy ...
Pierre's user avatar
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1 answer
504 views

I was experimenting with ip6tables (version 1.6.0) on EC2 instances using Debian 9 AMI, I noticed that after some time I lose connectivity to the server on the IPv6 address while I can still reach the ...
Pierre's user avatar
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1 vote
1 answer
3k views

Right now I'm trying to figure out how to set up some IPv6 rules on a server of mine. My requirements are to disallow input echo-requests to the loopback device and local IP addresses (in this case, ...
stratacast1's user avatar
  • 13
0 votes
1 answer
455 views

I am just starting my foray into IPv6. First, my reference information: Comcast ISP cable-modem Linux firewall/router/gateway machine eth1 points to the Internet with a Comcast-supplied IPv6 /128 ...
hymie's user avatar
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3 votes
1 answer
2k views

I am running a cloud service on my Raspberry Pi 3 and want to access it also from outside. Unfortunately, my ISP does not allow me to forward ports (this is another story) therefore I sometimes also ...
Dr3w Br1ck13's user avatar
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