Matthias Vallentin mavam

SSL Profiling in Bro

I wrote profiling applications over SSL recently and this is my attempt at doing so in Bro. I haven't written a Bro script before this one so I'm betting I've got a bunch of things wrong here. The code comes in two parts. The first is the main script which has the core logic. The second part is the "local" script which defines the application profiles you are interested in.

The Main Script

@load base/protocols/conn
@load base/protocols/ssl
@load base/frameworks/notice

Configure Postfix for Gmail SMTP in Mac OSX

This should work on at least:

10.9 Mavericks
10.10 Yosemite

Taken from Using MacOSX Lion command line mail with Gmail as SMTP

Edit file /etc/postfix/main.cf and add this to the bottom:

This is a sequel to "Postfix: relay to authenticated SMTP".

I would like to send mail from two different Gmail accounts using Postfix. Here is the relevant section in the Postfix documentation: Configuring Sender-Dependent SASL authentication.

As a concrete example, here's how to set up two Gmail accounts (only relevant sections of the config files are listed below):

/etc/postfix/main.cf:
    # sender-dependent sasl authentication
    smtp_sender_dependent_authentication = yes

sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

	swatch <- function(x) {
	# x: a vector of colours (hex, numeric, or string)
	par(mai=c(0.2, max(strwidth(x, "inch") + 0.4, na.rm = TRUE), 0.2, 0.4))
	barplot(rep(1, length(x)), col=rev(x), space = 0.1, axes=FALSE,
	names.arg=rev(x), cex.names=0.8, horiz=T, las=1)
	}

	# Example:
	# swatch(colours()[1:10])
	# swatch(iwanthue(5))

	#!/usr/bin/python3
	# By Steve Hanov, 2011. Released to the public domain.
	# Please see http://stevehanov.ca/blog/index.php?id=115 for the accompanying article.
	#
	# Based on Daciuk, Jan, et al. "Incremental construction of minimal acyclic finite-state automata."
	# Computational linguistics 26.1 (2000): 3-16.
	#
	# Updated 2014 to use DAWG as a mapping; see
	# Kowaltowski, T.; CL. Lucchesi (1993), "Applications of finite automata representing large vocabularies",
	# Software-Practice and Experience 1993

	#include <iostream>
	#include <utility>
	#include <typeinfo>
	#include <type_traits>
	#include <string>

	template <size_t arg1, size_t ... others>
	struct static_max;

	template <size_t arg>

	# List targets defined in this file
	TARGETS_SELF := cmake
	# Exclude targets defined in this file
	TARGETS_OTHER := $(filter-out $(TARGETS_SELF), $(MAKECMDGOALS))

	# Call all targets using `Makefile` in build directory in one `make` command. It
	# can depend on targets defined in this file, e.g., depending on a target to
	# create the Makefile.
	#
	# If no targets are specified, use the dummy `all` target

	#include <iostream>
	#include <memory>
	#include <vector>
	#include <utility>

	/* Same definition of Object, Book, and Door as before */

	class object_concept_t {
	public:
	virtual ~object_concept_t() = default;