thelinuxwiki - New pages [en]

openvpn TSL unsupported protocol

2026-01-05T20:08:28Z

Nighthawk: Created page with " == environment == OpenWrt 24.10.4 == errors == Mon Jan 5 13:44:54 2026 daemon.notice openvpn(junkervpn)[17226]: TLS: Initial packet from [AF_INET]10.0.0.117:11194, sid=..."

== environment ==
OpenWrt 24.10.4

== errors ==

Mon Jan 5 13:44:54 2026 daemon.notice openvpn(junkervpn)[17226]: TLS: Initial packet from [AF_INET]10.0.0.117:11194, sid=a48ff4a0 b182fbd1
Mon Jan 5 13:44:54 2026 daemon.err openvpn(junkervpn)[17226]: TLS error: Unsupported protocol. This typically indicates that client and server have no common TLS version enabled. This can be caused by mismatched tls-version-min and tls-version-max options on client and server. If your OpenVPN client is between v2.3.6 and v2.3.2 try adding tls-version-min 1.0 to the client configuration to use TLS 1.0+ instead of TLS 1.0 only
Mon Jan 5 13:44:54 2026 daemon.err openvpn(junkervpn)[17226]: OpenSSL: error:0A000102:SSL routines::unsupported protocol:
Mon Jan 5 13:44:54 2026 daemon.err openvpn(junkervpn)[17226]: TLS_ERROR: BIO read tls_read_plaintext error
Mon Jan 5 13:44:54 2026 daemon.err openvpn(junkervpn)[17226]: TLS Error: TLS object -> incoming plaintext read error
Mon Jan 5 13:44:54 2026 daemon.err openvpn(junkervpn)[17226]: TLS Error: TLS handshake failed

== root cause ==
tls version mismatch. need to enable 1.0 on the connecting client device.

== solution ==

add the following line to the appropriate conf file in /etc/openvpn/ directory
tls-version-min 1.0

[[category:openvpn]]

view ESXi arp cache

2025-10-22T18:30:29Z

Nighthawk:

ESXi version 6.5.0

to discover if IPs are in use or not...

ssh to esxi host (if enabled), ping range with script like...
[admin@localhost:~] '''for i in `seq 254`; do ping 192.168.0.$i -c 1 -W 1 | grep "1 packets received, 0% packet loss" &> /dev/null; if [ "$?" == "0" ]; then echo "192.168.0.$i is USED!!!!"; fi; done'''
192.168.0.1 is USED!!!!
192.168.0.4 is USED!!!!
...

view arp cache with command...

[admin@@localhost:~] '''esxcli network ip neighbor list'''
Neighbor Mac Address Vmknic Expiry State Type
------------ ----------------- ------ -------- ----- -------
192.168.0.1 00:12:ef:34:cd:67 vmk0 -4 sec Unknown
192.168.0.2 (incomplete) vmk0 -2 sec Unknown
192.168.0.3 (incomplete) vmk0 -2 sec Unknown
192.168.0.4 b4:05:43:03:41:fc vmk0 -2 sec Unknown
...

[[category:vmware]]

add user to AD group via powershell

2025-07-30T19:44:16Z

Nighthawk: Created page with " PS C:\Users\admin> Add-ADGroupMember -Identity "Domain Admins" -Members billy category:winblows"

PS C:\Users\admin> Add-ADGroupMember -Identity "Domain Admins" -Members billy

[[category:winblows]]

show connected rdp users via powershell

2025-07-30T19:41:58Z

Nighthawk:

PS C:\Users\admin> '''query user'''
USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME
bob 1 Disc 54 7/30/2025 11:29 AM
chris 3 Disc 8 7/30/2025 12:06 PM
joe rdp-tcp#28 4 Active . 7/30/2025 1:37 PM
bill rdp-tcp#37 5 Active . 7/30/2025 2:24 PM

[[category:winblows]]

clear windows clipboard

2025-06-07T15:27:36Z

Nighthawk: Created page with " cmd /c echo off | clip category:winblows"

cmd /c echo off | clip

[[category:winblows]]

linux to windows powershell over ssh

2025-05-27T17:43:34Z

Nighthawk:

==description==
Microsoft Windows [Version 10.0.18363.2274]

==install openssh server on windows==

from powershell on windows...

check software status
PS C:\WINDOWS\system32> '''Get-WindowsCapability -Online | Where-Object Name -like 'OpenSSH*''''

install openssh-server
PS C:\WINDOWS\system32> Add-WindowsCapability -Online -Name OpenSSH.Server
<br>Path :
Online : True
RestartNeeded : False

at this point the software is installed but config files have NOT be created yet.

setting wine prefix at CLI

2025-05-13T18:50:47Z

Nighthawk: Created page with "To specify a WINEPREFIX on the command line when running Wine, set the WINEPREFIX environment variable before the command. For example: bash WINEPREFIX=/path/to/your/prefix..."

To specify a WINEPREFIX on the command line when running Wine, set the WINEPREFIX environment variable before the command. For example:

bash

WINEPREFIX=/path/to/your/prefix wine your_program.exe

rdesktop and function keys

2025-05-13T18:48:24Z

Nighthawk: Created page with "goal: to prevent the linux windows manager function key bindings from being the victim of override solution: -K Do not override window manager key bindings. By default..."

goal: to prevent the linux windows manager function key bindings from being the victim of override

solution:
-K Do not override window manager key bindings. By default rdesktop
attempts to grab all keyboard input when it is in focus.

ansible loop fail

2025-04-16T21:24:38Z

Nighthawk: /* Example Play */

Problem: loops were failing when trying to pass a variable with something like "foo,bar" in it. This is just a string with a comma in it.

ansible error: Invalid data passed to 'loop', it requires a list

Solution: enscapsulate with square brackets [ ] and quotes around individual elements.

example:

["foo","bar"]

== Example Play ==

<source lang="yaml">
- name: example play showing common loop/list error
hosts: localhost
gather_facts: false
tasks:
- name: set var1
set_fact:
var1: "foo,bar"

- name: set var2
set_fact:
var2: ["foo","bar"]

- name: output var1 type
debug:
msg: "{{ var1 | type_debug }}"

- name: output var2 type
debug:
msg: "{{ var2 | type_debug }}"

- name: try to loop var2
debug:
msg: "{{ item }}"
loop: "{{ var2 }}"

- name: try to loop var1
debug:
msg: "{{ item }}"
loop: "{{ var1 }}"
</source>

$ '''ansible-playbook example_list.yml'''
<source lang="yaml">
PLAY [localhost]
*******************************************************************************************************

TASK [set var1]
*******************************************************************************************************
ok: [localhost]

TASK [set var2]
********************************************************************************************************
ok: [localhost]

TASK [output var1 type]
************************************************************************************************
ok: [localhost] => {
"msg": "AnsibleUnicode"
}

TASK [output var2 type]
************************************************************************************************
ok: [localhost] => {
"msg": "list"
}

TASK [try to loop var2]
************************************************************************************************
ok: [localhost] => (item=foo) => {
"msg": "foo"
}
ok: [localhost] => (item=bar) => {
"msg": "bar"
}

TASK [try to loop var1]
************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "Invalid data passed to 'loop', it requires a list, got this
instead: foo,bar. Hint: If you passed a list/dict of just one element, try adding wantlist=True to your
lookup invocation or use q/query instead of lookup."}

PLAY RECAP
*************************************************************************************************************
localhost : ok=5 changed=0 unreachable=0 failed=1 skipped=0 rescued=0
ignored=0

</source>

ansible fiortios api login failure

2025-04-14T18:17:55Z

Nighthawk:

fortios version: 7.4.5

error(from ansible): ansible.module_utils.connection.ConnectionError: Expecting value: line 1 column 1 (char 0)

description: login with access_token failing from ansible to fortios. logging in with same token via curl is working.

solution:

check the following setting

foritos # show full-configuration | grep rest-api-key-url-query
set rest-api-key-url-query disabled

if disabled then do...

foritos # config global
foritos # config system global
foritos (global) # set rest-api-key-url-query enable
foritos (global) # end

[[category:ansible]]
[[category:fortinet]]

scrcpy android screen mirror and remote control

2025-04-04T14:15:46Z

Nighthawk: Created page with " This application mirrors Android devices (video and audio) connected via USB or TCP/IP and allows control using the computer's keyboard and mouse. It does not require root ac..."

This application mirrors Android devices (video and audio) connected via USB or TCP/IP and allows control using the computer's keyboard and mouse. It does not require root access or an app installed on the device. It works on Linux, Windows, and macOS.

[https://github.com/Genymobile/scrcpy official source https://github.com/Genymobile/scrcpy]

[[category:android]]

ansible-galaxy collection upgrade

2025-02-28T01:18:23Z

Nighthawk:

$ '''ansible-galaxy collection list'''
# /home/jsmith/.ansible/collections/ansible_collections
Collection Version
----------------------------- -------
ansible.netcommon '''6.1.1'''
ansible.utils 4.1.0
...

$ '''ansible-galaxy collection install ansible.netcommon --force'''

$ '''ansible-galaxy collection list'''
# /home/jsmith/.ansible/collections/ansible_collections
Collection Version
----------------------------- -------
ansible.netcommon '''7.1.1'''
ansible.utils 4.1.0
...

[[category:ansible]]

ansible upgrade notes

2025-02-28T01:06:17Z

Nighthawk:

performing upgrade in a virtual environment

install python virtual environment binaries
$ '''sudo apt install python3.11-venv'''

create a virtual environment
$ '''sudo python3 -m venv /usr/local/venv/'''

setting ownership for shared environment
$ '''sudo chown -R ansible:ansible /usr/local/venv'''

activate virtual environment (it is usable without sourcing if using pull paths to bin files)
$ '''source /usr/local/venv/bin/activate'''
(venv) $ '''sudo /usr/local/venv/bin/python -m pip install ansible'''
Collecting ansible
Downloading ansible-11.3.0-py3-none-any.whl (54.2 MB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 54.2/54.2 MB 4.0 MB/s eta 0:00:00
Collecting ansible-core~=2.18.3
Downloading ansible_core-2.18.3-py3-none-any.whl (2.2 MB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.2/2.2 MB 27.4 MB/s eta 0:00:00
...
Installing collected packages: ansible-core, ansible
Attempting uninstall: ansible-core
Found existing installation: ansible-core 2.15.0
Uninstalling ansible-core-2.15.0:
Successfully uninstalled ansible-core-2.15.0
Successfully installed ansible-11.3.0 ansible-core-2.18.3

[[category:ansible]]