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Aruba RAP in bridge mode with remote access

The Aruba Networks Remote Access Points is a nice feature for branch offices or home workers. I use a RAP5WN at home and I configured different SSID’s on the RAP. The SSID’s are in tunnel mode, split-tunnel mode or bridge mode. The bridge mode connections are for my home devices, like my girls iPad and iPhone.

The RAP5WN has four 10/100 FastEthernet ports. I configured wired ap profiles for these ports and they are also configured in bridge mode. All devices in bridge mode receive an IP address from my local internet router (ADSL) and this works without any problems. Devices in bridge mode can directly communicate with each other.

My local internet router has some port forwarding rules configured so I can access the server from the internet. After using the Aruba RAP and physically moving the server from the local router to the Aruba RAP, I couldn’t access the server anymore. I did some more testing and noticed that I couldn’t connect to any device behind the RAP, when I tried to connect to the devices through the uplink port of the RAP.

I checked the configuration of the RAP and especially the wired AP profiles. I couldn’t find any related configuration parameters to change this behavior. Eventually I found the solution within the AP system profile. The setting Session ACL solved my problem. The explanation for the setting is: Session ACL applied on uplink of a remote AP. By default the session acl parameter is configured as ap-uplink-acl. This acl contains the following entries:

ip access-list session ap-uplink-acl
any any udp 68  permit
any any svc-icmp  permit
any host 224.0.0.251 udp 5353  permit

I changed this setting to the session acl allowall to permit all traffic on the uplink interface.

ap system-profile “custom-ap-system-profile”
session-acl “allowall”
!
ap-group “home-rap-group”
ap-system-profile “custom-ap-system-profile”

I was able to connect remotely to the server after applying the session acl allowall to the AP system profile, which is connect to the correct AP Group. Problem solved!!

René Jorissen works as Solution Specialist for 4IP in the Netherlands. Network Infrastructures are the primary focus. René works with equipment of multiple vendors, like Cisco, HP Networking, Juniper Networks, RSA, Aruba Networks, AeroHive, Microsoft and many more. René is CCNA (Routing & Switching, Security), CCNP , Cisco ASA Specialist, AeroHive Certified WLAN Professional and CEFFS certified. You can follow René on Twitter and LinkedIn.
René Jorissen
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