Thursday, May 30, 2019

Sophos UTM 9 RPM Installation Error

Installing would have been easier if I had realised earlier that:
  • There's an 'asg' image to be used, not the first on the list 'isg'
    • ISG variant won't fail right away, but at some point aborts because the hardware is not found
  • The disk interface better be Virtio
    • SCSI disk will be a 'hard drive not found' failure of sorts
    • SATA did install but it would not boot for some reason
  • The hard drive needs to be large enough, or strange errors happen
    • Below 10G drive, it will abort complaining it will need at least 10G
    • With a 10G drive, it will fail during installation with the 'RPM Installation Error'
    • With 15G drive, it succeeds. Afterwards I see the hardware requirements do specify 60G, but the installer just incorrect limits


Saturday, May 25, 2019

Enable HPE iLO virtual serial port on Proxmox VE

Note to self,

Set up a serial console for Proxmox VE before accidentally tripping over the network cables the next time:

 enable serial-getty@ttyS1.service
 start serial-getty@ttyS1.service

Then, next time you do, simply

  ssh iloc.lan vsp

do see what's wrong in there.

Wednesday, August 22, 2018

Transfer contacts from iPhone to Android locally, without a cloud

Note to self, next time I manage to convert someone from iOS to Android, this is how it’s done:

Sync iPhone to a Mac through iTunes
- On Info tab, select “sync contacts”
- (Optionally sync contacts to a specific addressbook folder)

Export contacts to a vCard file
- Open Address Book
- Select all contacts (in a folder)
- Drag them into desktop
- FooBar and 100 others.vcf file gets created

Import vCard into Android
- In Bluetooth preferences on Mac, pair with the Android device
- From Bluetooth menu on the Mac, select the Android phone, “Send file to device…”
- Select the vcf file created
- On the Android phone, accept the file transfer and import to contacts



Sunday, February 18, 2018

Enable Wake on lan on Ubuntu

Note to self, next time I'm wondering why WOL doesn't work with Ubuntu.

Enable it the convoluted ways of NetworkManager. What was wrong with /etc/network/interfaces?

  nmcli connection show 
  sudo nmcli connection modify 802-3-ethernet.wake-on-lan magic

Make sure some over-zealous daemon does not thwart your efforts and shut down your NIC on suspend.

  sudo sed -i.bak -e 's/^WOL_DISABLE=Y/WOL_DISABLE=N/'

Reboot and confirm the settings are good

  sudo ethtool | grep "Wake-on"
Supports Wake-on: pumbg
Wake-on: g

Suspend your Ubuntu

  sudo pm-suspend

Double check the link led is on.

Set up and run a client on your favorite OS


  sudo port install wakeonlan

  wakeonlan


Sunday, December 31, 2017

Easy-rsa fails with "Missing or invalid OpenSSL"

Trying to use easyrsa on MacOS High Sierra, it failed with an error message

MacBook-Air:vpn me$ EasyRSA-3.0.3/easyrsa init-pki140736197817224:error:0E065068:configuration file routines:STR_COPY:variable has no   value:/BuildRoot/Library/Caches/com.apple.xbs/Sources/libressl/libressl-  22/libressl/crypto/conf/conf_def.c:573:line 3
Easy-RSA error:
Missing or invalid OpenSSL
Expected to find openssl command at: openssl
This seems to be a known issue with MacOS High Sierra which has migrated to Libressl instead of Openssl, and has an easy workaround:

MacBook-Air:vpn me$ EASYRSA_OPENSSL=/usr/local/Cellar/openssl/1.0.2n/bin/openssl EasyRSA-3.0.3/easyrsa init-pki
init-pki complete; you may now create a CA or requests.
Your newly created PKI dir is: /Users/me/Documents/vpn/pki

Sunday, November 12, 2017

Playing audio from Raspberry PI3 to A2DP speaker

Basic steps from Arch Linux wiki, with a small Raspbian specific kludge from StackOverflow:
Create /etc/dbus-1/system.d/pulse.conf:



<!DOCTYPE busconfig PUBLIC
"-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
  <policy user="root">
    <allow own="org.pulseaudio.Server"/>
    <allow send_destination="org.bluez"/>
    <allow send_interface="org.bluez.Manager"/>
  </policy>
  <policy user="pulse">
    <allow own="org.pulseaudio.Server"/>
    <allow send_destination="org.bluez"/>
    <allow send_interface="org.bluez.Manager"/>
  </policy>
  <policy context="default">
    <deny own="org.pulseaudio.Server"/>
    <deny send_destination="org.bluez"/>
    <deny send_interface="org.bluez.Manager"/>
  </policy>
</busconfig>


pulseaudio --start
# bluetoothctl
# power on
# agent on
# default-agent
# scan on
# pair 
# connect 
# scan off
# exit

paplay imperial_march.wav --device=bluez_sink.04_FE_xx_xx_xx_xx



Wednesday, November 1, 2017

Apple Mail.App alternatives

Notes to myself on experiences with alternatives to standard Mac OS email app.

Apple Mail behavior of downloading all messages and their attachments from all remote IMAP folders is unacceptable on a laptop.

Postbox
- Very high latency on all UI widget operations on a Macbook Air - feels like operating on a remote desktop

Airmail 3
- UI feels quick, but is highly asynchronous. You never know if the view represents the server state.
- Undo operation doesn't really work - Customer service refuses to understand the issue

Sticking with Airmal for now.