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Sake Blok

My interest in Networking was first raised when I started working for one of the first ISP's in The Netherlands (back in 1995). My L2/L3 knowlegde was gathered while working for a large bank. I then switched teams within that bank to manage their redundant internet gateway based on a loadbalanced firewall cluster, loadbalancers, ssl-offloaders, caches and proxies.

In that time (2000) I started using Ethereal to troubleshoot problems within that environment. After my switch to a reseller, my skills developped towards bug-chasing and Ethereal/Wireshark has been an invaluable tool for me. I use it on a daily basis.

In february 2006 I wished to be able to filter on the "X-Forwarded-For:" http=header and joined the mailing-lists. First I wanted to ask for that functionality, but then I realised that I might be able to add it myself. Well, one thing led to another and after submitting a few of my own patches, I started working on bug-reports too. Resulting in being invited to the core development team in august 2007.

I live in The Netherlands near Amsterdam and work as "Research and Development Engineer" at ion-ip in Veenendaal. In my job I am involved in troubleshooting complex networking problems in Application delivery infra-structures. This involves quite a bit of bug-chasing :-). I am also involved in putting new and existing products from our vendors on a testbed in our testlab (which I maintain as well).

Main development areas

As I am more a networking person than a programmer, I mainly contribute by solving issues I encounter while working with Wireshark. I also submitted a few enhancements and solved some bugs reported by others. My development skills are growing, but for now I consider myself skilled at looking at what other people have built and reusing and combining things to solve the issues I want to solve.

Contributions so far

Date

SVN

Description

20060220

17356

Add filter http.x_forwarded_for

20060415

17869

Added support for certain Sniffer Format file

20061029

19729

Some textual changes in the development guide

20061029

19734

Add support for Cisco proprietary MST format

20061225

20212

Added ssl-id to the packet-detail-list

20070309

21005

Added "Copy as Filter"

20070323

21140

Added accelerated key for "Copy as Filter" and correct the documentation

20070323

21154

Fix for bug 491: "unexpected frame.time_delta behaviour"

20070330

21277

Fix for bug 598: "Double linefeed when copying from 'follow tcp stream'"

20070401

21295

Fix for bug 1136: "tcp checksum 0xffff"

20070410

21372

Fix in dfvm.c (found while fixing SSL things in bug 1503)

20070410

21373

Fix for bug 1503: "SSL enhancements"

20070414

21438

Fix for malformed SSL-handshake message after change cipher spec

20070429

21618

Enhancements to packet-http.c for proxied ssl connections

20070520

21867

Fix for bug 1056: "Timestamping seems to be broken"

20070817

22533

Added support for NetScreen snoop output

List of things I want to fix/enhance/add in the (near) future

Other interests

Email: sake (at) euronet (dot) nl