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VLAN/ACL setup

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VLAN/ACL setup

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.

VLAN/ACL setup

cdnhk

2023-09-14 13:24:09

Posts: 17

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Registered: 2023-03-28

VLAN/ACL setup

2023-09-14 13:24:09

Tags: #VLAN & Multi-Networks

Model: ER707-M2

Hardware Version: V1

Firmware Version: 1.1.0

Hi,

I've setup a 'guest' VLAN (VLAN200) that has no access to VLAN1 but can access internet resources.

VLAN1 can access VLAN200 but not the other way around.

A webserver in VLAN1 is portmapped from internet. Actually there are more web servers but all all reverse proxied from internet.

VLAN1 uses split DNS so local clients access the webserver internally (not proxied).

VLAN200 clients use public DNS.

Unfortunately VLAN200 clients (B) cannot access the webservers in VLAN1 like external/internet clients can.

What rule/ACL do I need to define to make this possible.

Current rules are :

Gateway ACL: Deny LAN->LAN VLAN200 -> LAN

Switch ACL: Deny VLAN200 -> IPGroup (TCP/UDP switch and router IP)

network

4 Reply

Tedd404

LV4

2023-09-15 05:56:05

Posts: 584

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Registered: 2022-01-05

Re:VLAN/ACL setup

2023-09-15 05:56:05

@cdnhk

what error do you have?

how does the vlan 200 resolve the domain name? ping the domain?

use wireshark capture the packet and analyze it.

ScReW yOu gUyS. I aM GOinG hoMe. —————————————————————— For heaven's sake, can you write and describe your issue based on plain fact, common logic and a methodologic approach? Appreciate it.

cdnhk

LV1

2023-09-15 08:08:31 - last edited 2023-09-15 08:10:14

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Re:VLAN/ACL setup

2023-09-15 08:08:31 - last edited 2023-09-15 08:10:14

There is no error. Just cannot reach it.

An nslookup resolves to the WAN address (as it should).

But this rule blocks access

=> Gateway ACL: Deny LAN->LAN VLAN200 -> LAN

and I should probably need to add

=> Gateway ACL: Permit LAN->LAN VLAN200 -> IP-Port Group

But thats not possible (yet).

Or is there another way?

Tedd404

LV4

2023-09-15 08:14:41

Posts: 584

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Re:VLAN/ACL setup

2023-09-15 08:14:41

@cdnhk

if you unblock it, does it work properly?

switch acl if you have switch.

cdnhk

LV1

2023-09-15 08:23:59

Posts: 17

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Registered: 2023-03-28

Re:VLAN/ACL setup

2023-09-15 08:23:59

Tedd404 wrote

@cdnhk

if you unblock it, does it work properly?

switch acl if you have switch.

@Tedd404

if you unblock it, does it work properly?

Yes it does

switch acl if you have switch.

Yes I have a switch but switch acl does not 'solve' it.

VLAN/ACL setup

VLAN/ACL setup

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