Henrik Kramselund (@kramse) he/him is an Internet networking and security consultant. He loves the internet and has been working with security since the mid-1990s. Henrik typically works in core internet with setting up secure infrastructures with technologies like BGP, routing, firewalls and intrusion detection systems. Henrik is in favor of free access to strong encryption and control of own data. Teach Diploma in IT-security at

URLs for Kramse

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Events for Kramse

It has been more than 20 years since MafiaBoy launched Denial of Service attacks against large sites like Yahoo, Amazon etc.

Still we have trouble with DDoS attacks and we do have some solutions. We think it would be beneficial to create a common shared taxonomy of DDoS attack types and would like to invite participants at BornHack to join in creating this.

We wi… Read more


  • Tuesday, Aug 8th, 2023, 13:00 (CEST) - Tuesday, Aug 8th, 2023, 15:00 (CEST)

I have done a few very small patches for open source programs, but would like to do more.

But how?%&!

I have a plan to do pull requests for a few select open source programs I use myself, but its hard. I am not a great programmer, I am a noob in Git, and I speak english as a second language.

Lets do an informal workshop, where we sit together and talk about joining open source projects. Talk about how to get started. I can brag about a few very minor updates, and it … Read more


  • Monday, Aug 7th, 2023, 16:00 (CEST) - Monday, Aug 7th, 2023, 18:00 (CEST)
Workshop: Lockpicking fun

Just a couple of hours allowing people to try lockpicking.

Bring your locks, picks and similar stuff.

No teaching other than showing the next person how we do it. A lot of videos on the internet show how.

Asked the BornHack #bornhack IRC channel and at least a couple of people said they would like to join, and demo

If someone wants to take over this, and do some proper teaching, plese do. I am not an expert in lockpicking, but you cannot have a camp without :-DRead more


  • Friday, Aug 4th, 2023, 16:00 (CEST) - Friday, Aug 4th, 2023, 18:00 (CEST)

Lets meetup people interested in networks and IP.

Propose you bring snacks and favorite beverage and come to my tent. We can talk about stuff like: Ethernet, Layer2, Layer3, SNMP, OSPF, BGP, firewalls, routers, switches, syslog, ACL, security, denial of service, syn flooding, Kali Linux, Nmap, portscan, Kibana, Elasticsearch, Suricata, Zeek, Metasploit, 802.1q, 802.11, 802.1x, STP, BPDU guard, IPv4, IPv6, ICMPv6, NTP, Cisco IOS, 802.3ad, Junos, DDoS, pktgen, t50, hping, Kali Linux, AR… Read more


  • Thursday, Aug 3rd, 2023, 17:00 (CEST) - Thursday, Aug 3rd, 2023, 18:00 (CEST)

A small workshop teaching people how to produce DDoS simulation traffic - useful for testing their own infrastructures.

We will have a server connected on 10Gbps on a switch with multiple 1Gbps port for attackers. Attackers can be connected through 1Gbps ports using USB Ethernet - we have loaners.

Work together to produce enough to take down this server!

WHILE attack is ongoing there will be ample opportunities to monitor traffic, monitor port, and decide on changes to p… Read more


  • Tuesday, Aug 8th, 2023, 11:00 (CEST) - Tuesday, Aug 8th, 2023, 13:00 (CEST)

I would like to go over the concept of Internet IP addresses, as used in TCP/IP - the Internet at BornHack specifically.

I will show and tell how they originate, and how they get all the way to your computer.

There will be no presentation, except for some live going over web pages, flipping through about 30 browser tabs in rapid succession :-D

Read more


  • Sunday, Aug 6th, 2023, 13:50 (CEST) - Sunday, Aug 6th, 2023, 14:00 (CEST)