iptables-restore - what does `:CHAIN` do?
This is a followup to https://unix.stackexchange.com/a/400203/21615 .
When using iptables-restore --noflush, :<chain> <policy> [<packets_count>:<bytes_count>] seems to flush the chain if <chain> is DOCKER-USER but does not flush if <chain> is INPUT.
Why is that?
Both chains exist when running iptables-restore. INPUT has a default policy, but DOCKER-USER does not. The last rule of DOCKER-USER is to RETURN to the FORWARD chain.
iptables
asked 30 mins ago
JayenJayen
1418
add a comment |
This is a followup to https://unix.stackexchange.com/a/400203/21615 .
When using iptables-restore --noflush, :<chain> <policy> [<packets_count>:<bytes_count>] seems to flush the chain if <chain> is DOCKER-USER but does not flush if <chain> is INPUT.
Why is that?
Both chains exist when running iptables-restore. INPUT has a default policy, but DOCKER-USER does not. The last rule of DOCKER-USER is to RETURN to the FORWARD chain.
iptables
asked 30 mins ago
JayenJayen
1418
add a comment |
This is a followup to https://unix.stackexchange.com/a/400203/21615 .
When using iptables-restore --noflush, :<chain> <policy> [<packets_count>:<bytes_count>] seems to flush the chain if <chain> is DOCKER-USER but does not flush if <chain> is INPUT.
Why is that?
Both chains exist when running iptables-restore. INPUT has a default policy, but DOCKER-USER does not. The last rule of DOCKER-USER is to RETURN to the FORWARD chain.
iptables
asked 30 mins ago
JayenJayen
1418
This is a followup to https://unix.stackexchange.com/a/400203/21615 .
When using iptables-restore --noflush, :<chain> <policy> [<packets_count>:<bytes_count>] seems to flush the chain if <chain> is DOCKER-USER but does not flush if <chain> is INPUT.
Why is that?
Both chains exist when running iptables-restore. INPUT has a default policy, but DOCKER-USER does not. The last rule of DOCKER-USER is to RETURN to the FORWARD chain.
iptables
iptables
asked 30 mins ago
JayenJayen
1418
asked 30 mins ago
JayenJayen
1418
asked 30 mins ago
JayenJayen
1418
asked 30 mins ago
JayenJayen
1418
asked 30 mins ago
JayenJayen
1418
1418
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f508412%2fiptables-restore-what-does-chain-do%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f508412%2fiptables-restore-what-does-chain-do%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
