Tag Archives: ubnt

Disable Wireless Security (WPA2) Preshared Key on Ubiquiti AC

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Update: Found this handy dandy FAQs link https://help.ui.com/hc/en-us/articles/115009192828

Included in the FAQ is a section on “How to Disable Wireless Security on airMAX AC Devices?”

The default security configuration for AC devices since firmware version 8.5.11 was changed to WPA2 AES with a pre-shared key 0000:0000.

Ubiquiti Default AC device WPA2 Preshared key

On Ubiquiti AC radios, you can not disable WPA 2 security through the web interface. This is not necessarily bad, however, what happens if you have a client that is reset and will only connect to the default ubnt SSID?

Fortunately there is a way to disable the WPA2 Preshared key.

  1. Log into the device over ssh.
  2. Run the following command to disable WPA2 in the config
    sed -i s/aaa.1.wpa.mode=2/aaa.1.wpa.mode=0/g /tmp/system.cfg
  3. Save the config file with
    /usr/etc/rc.d/rc.softrestart save
  4. Login to the client device and configure the SSID.

After you are done, you can click the enable button to re-enable Wireless Security.

Note: aaa.1.wpa.mode=2 doesn’t appear to be on all devices. If not, change “wpasupplicant.status=enabled” to “wpasupplicant.status=disabled”

Screenshot from UI help page on Wireless Security on airMAX AC devices

Searching for devices in UniFi via command line / MongoDB

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While the UniFi controller is nice and everything, it does make it hard to see if a device is already adopted. At least if you have a ton of sites. Fortunately, we can search the database directly to find out if a UniFi is already adopted and which site it is assigned to.

Connect to Mongo DB

First we need to connect to MongoDB. And then we need to use the ace database.

mongo -port 27117
use ace

List all the devices on the controller

This command will list all the devices on the controller. Regardless of which site they are assigned to.

db.device.find({}, { site_id:"", ip : "", name :"", mac:""})

Example output

{ "_id" : ObjectId("563a4d94e4b054e5376fc600"), "mac" : { "_id" : ObjectId("563a4d94e4b054e5376fc600"), "mac" : "44:d9:e7:34:d1:08", "ip" : "192.168.1.200", "name" : "Main_WiFi", "site_id" : "39485e9abf0e9a047bcded96" }
{ "_id" : ObjectId("9873b39ed1f5d30a6738abe"), "mac" : "44:d9:e7:01:a3:d4", "ip" : "192.168.1.201", "name" : "Testing_Wifi", "site_id" : "39485e9abf0e9a047bcded96" }

Each UniFi will have a “site_id”. You can use that ID to figure out which site it is assigned to.

List all the sites on the controller

db.site.find()

Example output

{ "_id" : ObjectId("39485e9abf0e9a047bcded96"), "name" : "default", "desc" : "Testing Site", "attr_hidden_id" : "default", "attr_no_delete" : true, "anonymous_id" : "83ae20ba-2948-458e-fd0a-1320583ecb04" }

Using our “site_id” from above, we see that the Testing_Wifi device is assigned to the “Testing Site” on the controller.

Something else to look at would be to use the UniFi controller API.

https://ubntwiki.com/products/software/unifi-controller/api

Change UniFi User Password from Command Line

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  1. SSH into the UniFi server
  2. Connect to MongoDB
  3. Find user ObjectId
  4. Update user info with new Password

You will need a hash of the password to put into the database. We don’t cover that in this post. You could copy the password from a different user account or use a different UniFi instance to change the password and then check the DB to find the hash.

SSH into the UniFi Server

ssh unifiadmin@unifiserver

Connect to MongoDB

Connect to Mongo by typing in the following.

mongo -port 27117

Then select the ace database by typing

use ace

Find user ObjectId

The admins are in the admin collection/table. Use the following command to list all the users and their name, email, and password hash.

db.admin.find({ }, { name:"" , email : "", "x_shadow" : "" })

Update user info with new Password

The following looks complex. Fortunately though you should be able to copy and paste. You should only need to change the
– ObjectId to your User Id
– Password Hash to your password hash

db.admin.update({"_id" : ObjectId("223abc5489de0a93be758493")}, {$set: { "x_shadow" : "$6$nwpi7.q2$OuD9/UZGZt5cD739Dt7j8Gb1uPtfU99p0DeDSurSNBZVizieUrFVFbRufiZMgOk2IaaDZN9BVmL9yUwQ2mC8f."}});

Note: The hash above is password. Not recommended for use.

You should receive a confirmation that it succeeded. Test the new password by logging into the UniFi Controller.

For more MongoDB commands, check out this post.

UniFi-Video Service failing to Start

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Do note that the UniFi-Video software is no longer supported should be migrated to the UniFi Protect systems.

Running “systemctl status unifi-video” gives the following error.

(unifi-video) checking for system.properties and truststore files…
…fail!

It appears that the error is due to an unsupported version of Java. Installing an older version of Java resolves the issue.

You can check which versions of Java are available with 

apt-cache show openjdk-8-jre

The versions that showed up for me were 

8u282-b08-0ubuntu1
8u252-b09-1ubuntu1

Installing the last one fixed the issue for now.

sudo apt-get install openjdk-8-jre-headless=8u252-b09-1ubuntu1

https://old.reddit.com/r/Ubiquiti/comments/l30jm5/unifi_video_31013_not_compatible_with_openjdk_180/

Unable to Remove Authorized SSH Keys from AirOS

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For some reason I ran into an issue where I can not remove authorized SSH Keys in AirOS version 6.3. It redirects to a 404 page and then to the main page.

Attempting to remove SSH keys in AirOS
404 Error while attempting to remove SSH keys

Thankfully, we can still remove the authorized keys from the command line. For more information on making changes over SSH, refer to the following post.

Ubiquiti AirOS – applying changes over ssh

SSH into radio. Replace username and IP address with your radios user and IP.

ssh ubnt@192.168.1.20

Open up config file

vi /tmp/system.cfg

Search for the lines that contain

the sshd.auth.key and remove them

Remove the sshd.auth.key lines

Save the file and write the configuration with

/usr/etc/rc.d/rc.softrestart save

Once the command completes, you should be good to go.

Ubiquiti U Installer Screenshots and Configuration Interface

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By default the U Installer redirects you to a page asking you to download the app. You can get to the actual U Installer web page by going to https://169.254.169.169

Default U Installer Page
Access U Installer Certificate Error

It has the same interface as a regular Airmax M equipment.

U Installer main page

Notes on Migrating UniFi-Video NVR Disk

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Recently upgraded a UniFi-Video VM by creating a new VM and restoring the backup from the previous one. There was a separate virtual disk used for storing all the videos. Although once I reattached it, I had to change the owner to the unifi-video user. lt was reporting that the owner/group was 127 and 134, looks like that was the user ID from the previous VM.

Example output from ls -hla command

drwxr-xr-x 3 127 134 4.0K Jan 16 2020 176de761-8399-3bed-8ceb-917cbe4d25bd
drwxr-xr-x 2 127 134 4.0K Sep 10 12:28 21d506ef-dded-31f2-baf8-c109a7e653b9
drwxr-xr-x 4 127 134 4.0K Jan 1 2020 1a3afc4c-a030-39a1-b139-857444c8b71c

Ended up changing the owner to the unifi-video owner with the chown command. /path/to/videos is the mount point of the video drive.

chown -R unifi-video:unifi-video /path/to/videos

Configuring UFW Firewall on Ubuntu for UniFi and UniFi-Video

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You should be able to copy and paste all the following commands in. You can check the status of the commands after with 

sudo ufw status

Allowing access to UniFi ports

sudo ufw allow 3478/UDP
sudo ufw allow 5514/UDP
sudo ufw allow 8080/TCP
sudo ufw allow 8443/TCP
sudo ufw allow 8880/TCP
sudo ufw allow 8843/TCP
sudo ufw allow 6789/TCP
sudo ufw allow 27117/TCP
sudo ufw allow 10001/UDP
sudo ufw allow 1900/UDP

UniFI Video ports

sudo ufw allow 7080/TCP
sudo ufw allow 7443/TCP
sudo ufw allow 7445/TCP
sudo ufw allow 7446/TCP
sudo ufw allow 7447/TCP
sudo ufw allow 10001/UDP
sudo ufw allow 6666/TCP
sudo ufw allow 7004/UDP
sudo ufw allow 7442/TCP

Helpful links

https://help.ui.com/hc/en-us/articles/217875218-UniFi-Video-Ports-Used
https://help.ui.com/hc/en-us/articles/218506997-UniFi-Ports-Used

Change UniFi Camera Password from Command Line

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Basic steps are

  • Change password with passwd
  • Copy passwd hash to /tmp/system.cfg
  • Apply Changes

Changing Password with passwd

The passwd command is normally used for changing the password for a Linux user. We’ll use it to change our user password and then copy the hash out of the /etc/passwd file to use in the Ubiquiti config file.

UVC.v4.18.37.67# passwd
Changing password for admin
New password:
Retype password:
passwd: password for admin changed by admin
UVC.v4.18.37.67#

Copy passwd hash to /tmp/system.cfg

Using “cat /etc/passwd”, we can get what the new password hash is and can copy that into the /tmp/system.cfg file.

UVC.v4.18.37.67# cat /etc/passwd
admin:$6$K4VfN1jGcxaX63Eo$yMGBg7jgCCg.HorkmkQf9wnQcEko.1onZcAa6ua421LonYgfYr8FgHprrwkMqaTYzH0KqCtOEPqDlB3AvkvcW.:0:0:Administrator:/etc/persistent:/bin/sh
UVC.v4.18.37.67#

Open up the /tmp/system.cfg config file, find the section below and replace the hash part, i.e. the part that is in bold.

users.1.name=admin
users.1.password=$6$K4VfN1jGcxaX63Eo$yMGBg7jgCCg.HorkmkQf9wnQcEko.1onZcAa6ua421LonYgfYr8FgHprrwkMqaTYzH0KqCtOEPqDlB3AvkvcW.
users.1.status=1

As a side note, you can copy and past all of the “users.1.*” lines and change the 1 to 2 and have a second user.

Apply Changes

You can use the following command to write the changes and then reboot the camera.

cfgmtd -f /tmp/system.cfg -w && reboot

Long Example

[admin@localhost ~]$ ssh ubnt@10.96.1.91
ubnt@10.96.1.91's password:
BusyBox v1.29.2 () built-in shell (ash)
UVC.v4.18.37.67# passwd
Changing password for admin
New password:
Retype password:
passwd: password for admin changed by admin
UVC.v4.18.37.67# cat /etc/passwd
admin:$6$K4VfN1jGcxaX63Eo$yMGBg7jgCCg.HorkmkQf9wnQcEko.1onZcAa6ua421LonYgfYr8FgHprrwkMqaTYzH0KqCtOEPqDlB3AvkvcW.:0:0:Administrator:/etc/persistent:/bin/sh
UVC.v4.18.37.67# vi /tmp/system.cfg <- Edit the text file and replace the hash with the one from above
UVC.v4.18.37.67# cfgmtd -f /tmp/system.cfg -w && reboot

Upgrade AirFiber 11 to 4.1 from SSH

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https://help.ui.com/hc/en-us/articles/204977444-airFiber-Updating-the-Firmware

Quick list of commands

ssh ubnt@192.168.1.20  <- Replace with username and IP address
cd /tmp
wget http://dl.ui.com/firmwares/airfiber11X/v4.1.0/AF11.v4.1.0.bin
mv AF11.v4.1.0.bin fwupdate.bin
/sbin/fwupdate -m
  1. Upload the firmware using FTP or SCP to the /tmp directory
  2. Rename the file from AF11…bin to fwupdate.bin
  3. Start the upgrade with
/sbin/fwupdate -m

Wait for it to finish upgrading