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ACL doesnt work

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ACL doesnt work

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ACL doesnt work

TechTrader

2022-10-09 16:28:22 - last edited 2023-03-14 03:06:21

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ACL doesnt work

2022-10-09 16:28:22 - last edited 2023-03-14 03:06:21

Tags: #Gateway ACL

Model: ER7206 (TL-ER7206)

Hardware Version: V1

Firmware Version: 1.2.1 Build 20220512 Rel.77113

I'm trying the configure ACL to limit access to an RDP server behind the ER7206 and it absolutely dosen't work, I'm a 20yr+ ITprofessional, I've configured pretty much every type router out there, from Cisco on down, this is the first time trying this device. This shouldnt be this difficult. I followed this guide to the tee.

https://www.youtube.com/watch?v=WgANlWL51PE

I created the ACLs to only allow access to the RDP server from one specific outside IP but once activated, I CAN still access the server from ANY outside computer.

Anyone know what could be the issue or is this device a POS and return it?

4 Reply

Virgo

LV5

2022-10-10 12:57:27

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Re:ACL doesnt work

2022-10-10 12:57:27

@TechTrader

What do you mean by accessing the server from an external PC specifically?
Can it ping through?
Normally, the ER7206 is a NAT device, and without setting the port forwarding, external devices cannot access the internal server.
How exactly is the ACL set up?

Just striving to develop myself while helping others.

GRL

LV3

2022-10-10 17:20:45

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Re:ACL doesnt work

2022-10-10 17:20:45

@TechTrader

1- Set up a "Service type" port 3389 for RDP

2- Setup an IP group with the one external IP address you want to permit access to called AllowedIPgrp

3 - Setup an IP group with the RDP server ip in it called RDPgrp

4 - Make sure Virtual SErver (port forwarding) for Port 3389 is set up

5 - Make one ACL rule Allow / RDP service / WAN In / Source - AllowedIPgrp Destination - RDPgrp

6 - Make one ACl rule Block / RDP service / WAN In / Source - IPGRP_ANY Destination - RDPgrp

Make sure ACL rule that allows the specific IP as above the one that blocks all the others

TechTrader

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2022-10-11 17:58:12 - last edited 2022-10-11 17:59:09

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Re:ACL doesnt work

2022-10-11 17:58:12 - last edited 2022-10-11 17:59:09

@Virgo

I want to allow access to the RDP server on the LAN from only a specific external address. I followed this guide

https://www.youtube.com/watch?v=WgANlWL51PE which is exactly what I'm trying to accomplish.

TechTrader

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2022-10-11 18:00:44

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Re:ACL doesnt work

2022-10-11 18:00:44

I'm pretty sure that's how I configured it based on the guide I mentioned but I'll try it again and keep you posted. Thx for the reply.

ACL doesnt work

ACL doesnt work

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