This is an original planning guide. It is not a vendor manual, an official standard, or legal advice. Example addresses use documentation ranges. Review every command before you paste it.
What this hour is for
Security Groups vs NACLs is a reading of which list answers the ticket. The rule builder drafts one rule. An ingress from 0.0.0.0/0 to an admin port is a line you delete. Do not apply the draft during the reading.
Write the account, project, or repository you administer, the name of this change, and the time. A second change waits until this line has been read back.
The browser tool drafts text or reads a paste you already hold. It does not log in, it does not scan, and it does not apply.
192.0.2.10/24, gateway 192.0.2.1, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. A sample password is replaced.
The change you can finish
Apply nothing while you are writing the note. When the lab window opens, it is one change on the account named in the ticket. Read the draft, then the account, then decide.
Rollback is the previous file, the previous plan, or the lab resource you can delete because it was only a lab.
- Write the account and the group or list name.
- Say whether the ticket is a group or a NACL.
- Draft one port and one source prefix you administer.
- Delete any 0.0.0.0/0 on an admin port.
- Do not apply.
- Stop.
Mistakes that outlive the statement
Security Groups vs NACLs goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- 0.0.0.0/0 left on SSH or RDP.
- The rule applied during the reading.
- A group and a NACL changed together.
- The firewall turned off to test the page.
Decisions to write down
One decision for Security Groups vs NACLs: One list is the window. The source is a prefix you administer. Admin ports are not open to the world. Nothing is applied. And the firewall stays on.
Checks before you call it done
Confirm this before you call the change done: The account is written. The draft was read. 0.0.0.0/0 is absent from admin ports. Nothing was applied. And the firewall is still on. If one of those fails, stop.
# Draft rule. Do not apply.
# Delete 0.0.0.0/0 on SSH or RDP.
# Do not turn the firewall off.
Before you leave the account
Security Groups vs NACLs ends when the account in the note is the account in the ticket. If it is not, stop.
The draft stays a draft until a person has read the names in it. A generator does not log in, does not apply, and does not scan.
192.0.2.10/24, gateway 192.0.2.1, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. A sample password is replaced. It is not a password you keep. 10.0.0.0/16 is a sample prefix, not a network you publish unless you already use it.
prompt-for-this is a reminder that a secret is missing. It is not an access key, a token, or a password you save. An Azure secret draft may contain a sample password. Replace it. Do not file it.
One change is the window. If two things move and the result is wrong, you will not know which one did it.
If the same step fails twice, stop for the day. Restore the copy you took first.
A second person reads the account and the change aloud. If they cannot find them in the ticket, the note is not done.
This page is a planning guide. It is not a vendor manual, not an official standard, not legal advice, and not an audit opinion. You do not apply it against an account you do not administer.
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