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@vmihailenco
vmihailenco / proxy.go
Created November 20, 2011 15:22
Simple TCP proxy in Golang
package main
import (
"bytes"
"encoding/hex"
"flag"
"fmt"
"io"
"log"
"net"
@reorx
reorx / python_deployment.rst
Last active December 14, 2020 03:31
Python Deployment

This document is still a scratch

Python Deployment

Setup A Workplace

You’ll want a directory to do this in so that you don’t screw up your machine.

@sdoro
sdoro / add.sh
Created April 6, 2013 21:46
Howto add/remove in VirtualBox a fifth NIC (without GUI) in hostonly networking
VBoxManage modifyvm "vm" --hostonlyadapter5 vboxnetX
VBoxManage modifyvm "vm" --nic5 hostonly
@ceme
ceme / bash_curl_loop
Last active January 19, 2023 13:07
bash curl loop
while true; do sleep 1; curl http://www.google.com; echo -e '\n\n\n\n'$(date);done
@ogrrd
ogrrd / dnsmasq OS X.md
Last active May 3, 2024 08:33
Setup dnsmasq on OS X

Never touch your local /etc/hosts file in OS X again

To setup your computer to work with *.test domains, e.g. project.test, awesome.test and so on, without having to add to your hosts file each time.

Requirements

Install

@obenjiro
obenjiro / vertical-text.css
Last active April 4, 2020 20:23
CrossBrowser Vertical CSS Text
/**
* Works everywere ( IE7+, FF, Chrome, Safari, Opera )
* Example: http://jsbin.com/afAQAWA/2/
*/
.rotated-text {
display: inline-block;
overflow: hidden;
width: 1.5em;
}
.rotated-text__inner {
@wen-long
wen-long / ss-redir 透明代理.md
Last active March 18, 2024 12:13
ss-redir 透明代理.md

##ss-redir 的 iptables 配置(透明代理)

透明代理指对客户端透明,客户端不需要进行任何设置就使用了网管设置的代理规则

创建 /etc/ss-redir.json 本地监听 7777 运行ss-redir -v -c /etc/ss-redir.json

iptables -t nat -N SHADOWSOCKS
# 在 nat 表中创建新链
iptables -t nat -A SHADOWSOCKS -p tcp --dport 23596 -j RETURN
# 23596 是 ss 代理服务器的端口,即远程 shadowsocks 服务器提供服务的端口,如果你有多个 ip 可用,但端口一致,就设置这个
@tonyseek
tonyseek / supervisord.service
Created August 8, 2014 07:11
Running supervisord with systemd.
[Unit]
Description=supervisord - Supervisor process control system for UNIX
Documentation=http://supervisord.org
After=network.target
[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisord.conf
ExecReload=/usr/bin/supervisorctl reload
ExecStop=/usr/bin/supervisorctl shutdown
@klzgrad
klzgrad / Naive-VPN.md
Created November 17, 2014 00:43
朴素VPN:一个纯内核级静态隧道

朴素VPN:一个纯内核级静态隧道

由于路由管控系统的建立,实时动态黑洞路由已成为最有效的封锁手段,TCP连接重置和DNS污染成为次要手段,利用漏洞的穿墙方法已不再具有普遍意义。对此应对方法是多样化协议的VPN来抵抗识别。这里介绍一种太简单、有时很朴素的“穷人VPN”。

朴素VPN只需要一次内核配置(Linux内核),即可永久稳定运行,不需要任何用户态守护进程。所有流量转换和加密全部由内核完成,原生性能,开销几乎没有。静态配置,避免动态握手和参数协商产生指纹特征导致被识别。并且支持NAT,移动的内网用户可以使用此方法。支持广泛,基于L2TPv3标准,Linux内核3.2+都有支持,其他操作系统原则上也能支持。但有两个局限:需要root权限;一个隧道只支持一个用户。

朴素VPN利用UDP封装的静态L2TP隧道实现VPN,内核XFRM实现静态IPsec。实际上IP-in-IP隧道即可实现VPN,但是这种协议无法穿越NAT,因此必须利用UDP封装。内核3.18将支持Foo-over-UDP,在UDP里面直接封装IP,与静态的L2TP-over-UDP很类似。

创建一个朴素VPN

@ChillarAnand
ChillarAnand / celery periodic task example
Created November 22, 2014 08:53
celery periodic task example
from datetime import timedelta
from celery import Celery
from celery.task import periodic_task
app = Celery('tasks', backend='amqp',
broker='amqp://guest@localhost//')