baumi's blog

baumi's personal blog … Linux, OS X, Windows, Random things, …

Know-How / Wissenswertes

IPv6 leaks, DNS leaks, OpenVPN, IPSEC, L2TP

Test for DNS and IPv6 leaks: (shows your VPN IPv4 address *and* leaked IPv6, if applicable) Prevent DNS leaks: add “redirect-gateway def1” to your openvpnclient.conf file … Prevent IPv6 leaks (i.e. temporarily disable IPv6): sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1 sudo sysctl -w net.ipv6.conf.wlp2s0.disable_ipv6=1 sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=1 sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1 China VPN: […]

LinPhone VOIP client softphone: Importing SIP contacts from Google Contacts via commandline using PHP on GNU/Linux

The following command will add contact “Demo” to your linphone contact database using sqlite3: sqlite3 ~/.var/app/com.belledonnecommunications.linphone/data/linphone/friends.db “INSERT INTO friends (friend_list_id, sip_uri, subscribe_policy, send_subscribe, ref_key, vCard, vCard_etag, vCard_url, presence_received) VALUES (1, ‘’, 1, 0, NULL, ‘BEGIN:VCARD’ || char(10) || ‘VERSION:4.0’ || char(10) || ‘’ || char(10) || ‘FN:Demo’ || char(10) || ‘IMPP:sip:+4366412346567@’ || char(10) || ‘END:VCARD’, […]

Syncthing: force local network sync

A couple of years ago i set up an owncloud server for myself. While it’s nice for small amount of files, owncloud had some disturbing limitations. I tried syncing more than a million files, and it miserably failed. The search feature would take forever, etc … Also, you always need a server to be running. […]

Currency exchange rates Euro foreign exchange reference rates + historical data XML today: XML 90 days: XML since 1999:

Free historic stock data

1. Register free API key for 2. API documentation: 3. Download data: curl “” –output tsla.csv

LENOVO Thinkpad X1 Carbon 2018 (Gen6, G6) 20KHCTO1WW

AC Geekbench Result: (BIOS setting: max power, max power) Single Core Score: 5132 Multi-Core Score: 16230 Battery Geekbench Result (BIOS setting: battery optimized, thermal optimized) Single Core Score: 2508 Multi-Core Score: 9378

WPA3: What we know …

Press Release: Press Release analysis: RFC8110: Opportunistic wireless encryption 802.11ax Task Group Timelines: WPA3 Hardware news: — What WPA is based on: gives a list (i have added links where available): –Harkins, D. and W. Kumari, “Opportunistic Wireless Encryption”, RFC 8110, March 2017 –IEEE 802.11-2016 –Harkins, […]

Previous Posts