diff --git a/IT/Configuring a Cisco IOS Switch.md b/IT/Configuring a Cisco IOS Switch.md
index 773b798..034cf3d 100644
--- a/IT/Configuring a Cisco IOS Switch.md
+++ b/IT/Configuring a Cisco IOS Switch.md
@@ -20,7 +20,7 @@ configure terminal
Shorthand: `conf t`
## Create/edit a vlan
-[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
+[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
From configuration mode:
```
vlan [vlan-id]
@@ -34,7 +34,7 @@ name [ascii name]
```
where `[ascii name]` is the name you want to assign (EG: `Accounting`)
## Assign interfaces to a vlan
-[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
+[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
Enter interface config mode (from conf mode):
Single port:
```
@@ -97,6 +97,27 @@ vlan [vlan-id]
no shutdown
```
+# Access list management
+Access lists are created implicitly when you apply the first configuration. More docs for access list management can be found at .
+### Permitting a particular network for a numbered access list
+From the privileged exec terminal:
+```
+access-list [access-list-num] permit [network] [wildcard-mask]
+```
+`permit` can be substituted with `deny` to instead explictly deny a network. An example of a valid network could be `192.168.1.0`, and a wildcard mask for a `/24` would be `0.0.0.255`. Unless explictly stated, an access list will deny all other traffic. You can explicitly allow traffic by default for a numbered access list with `access-list [access-list-num] permit any`.
+
+### Denying traffic from a particular address for a numbered access list
+From the privileged exec terminal:
+```
+access-list [access-list-num] deny [address]
+```
+
+### Applying a numbered access list to a particular interface
+From `config-if` mode:
+```
+ip access-group [access-list-number]
+```
+
# Viewing configs
### Vlan config
From the privileged exec terminal:
@@ -120,9 +141,11 @@ From privileged exec:
```
show interface trunk
```
+
## Helpful Resources
Trying to figure out where in the command hierarchy you are?
- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
Wondering more about the Cisco IOS CLI?
- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
--
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+Wish you knew more about a command?
+- https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fundamentals/configuration/xe-16-5/fundamentals-xe-16-5-book/cf-cli-basics.html#:~:text=Filtering%20CLI%20Output-,Getting%20Context%2DSensitive%20Help,-Entering%20a%20question
\ No newline at end of file