8/27/2013

VPN L2TP without IPsec: how to share the love beyond the OS limits

Well.. I know that this will be possible using OpenVPN but... I need to deal with users, and you know how limited users are.. Also, PPTP is compromised since some time ago, and the options are turning dark.
But I needed a VPN solution, and fast. At least temporary so I can think about in something else later. So I choose L2TP since is easily to configure in windows and.. you know how "clever" windows users use to be.. :D

Well. after the configuration in my work's pfsense and testing in my windows vm, I need to test on a Mac OS X cause some people in my work have Macbooks.. so I discovered that MacOS (ATM) only accepts out-of-the-box Cisco IPsec, PPTP and L2TP+IPSEC. Apple please...

Well, nothing is lost, just open Terminal.app and do this:

echo "plugin L2TP.ppp" > options
echo "l2tpnoipsec" >> options
sudo mv options /etc/ppp

And voilá, now your mac can connect to a goddamit L2TP without IPsec.

Obs: I don't know how much I can trust in L2TP but...

Source: Pandapow

8/21/2013

WCH341 USB Serial Converter for OSX

WCH341 is a quite nice (and cheap) USB adapter (I got one by almost 3USD). Works perfect in Windows and Linux, but for mac it's another story…..


After lots of searches and drivers, I found this guy .


Note: Isn't a driver, it's a software that can connect using your cable, but don't worry, the software is very nice and works perfect.


Also, the developer is a nice guy and answer my mail quite fast when I had a problem with the last version. Thanks Aaron.



Royal TSX

If you're searching for an application to manage all your connections (rdp, vnc, ssh, etc) in one unique place, Royal TSX is for you.


It's not free, but there's some advantages that make the cost:



  • Manage almost all types of connections (RDP, VNC, SSH, Telnet, etc)


  • Save groups by files, I mean, you can save each group of settings, for example, by company name. Perfect for me as consultant.


  • Save credentials, so you can use the same credential with lots of different servers without type all the credentials all the time.


  • Tabbed Interface.


  • A huge load of plugins, and you can also use your native stuff (like native RDP software, etc).


  • Collaboration credentials (when needed)


The paid version is 35USD each, but the bundle (OSX + Windows) is 54USD (at this moment). But you can still use the software for free forever but with some limitations (10 connections, etc). There's also an IOS version, but I didn't tested cause I don't have any IOS device (fortunately :P).


Quite impressive piece of software.



1/03/2013

Preparing gentoo for building android

That's right, I see lots of documentation for ubuntu and many other distributions and none exactly for gentoo, and seems I like to work with some crossdev, I'll post instructions for preparing your gentoo for that:

First of all, you need some packages (ok, if you already have some of these, you can skip them):


# emerge -pv git gnupg flex bison gperf libsdl wxGTK squashfs-tools curl ncurses zlib schedtool perl-Switch zip unzip

For 64bits systems, you need a little more

# emerge -pv emul-linux-x86-baselibs emul-linux-x86-compat emul-linux-x86-cpplibs

Note: I don' t know if cpplibs are really necessary, but I'll let here.

Make sure you' re using python 2.x instead of 3.x when you're about to compile

# eselect python list

Available Python interpreters:
  [1]   python2.7
  [2]   python3.2 *
# eselect python set 1

Download the repo utility. I'll install in /usr/local/bin, but you can use in ~/bin if you prefer:

# curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > /usr/local/bin/repo
# chmod 777 /usr/local/bin/repo

Now you're able to start syncing the source:

$ mkdir ~/Devel/Android && cd ~/Devel/Android
$ repo sync

From here you'll know what to do. :)




7/10/2012

Another dumb company

As other companies (not only in Brazil, but in several countries), SMTek seems to not respect GPL. When I ask to Evertek about the kernel source, they said "We do not give this type of information".

Congratulations to all shitty companies that disrespect laws and licenses. Companies of this type (directed by children) must learn a lesson or two, and for fucks sake, disappear from market to dust.

And congratulations to all brazilians that makes this possible, to give your thumbs up for companies like this (isnt the first time I see brazilians giving support for this type of trash). Also, who cares? Since it's simple to read the big difference between brazillians that doesn't even care to read a shit and xda-developers.com for example?

Edit: Now I'm a proud owner of Galaxy Tab 2 7", and with him i'm able to even make my own kernel. That's all

6/06/2012

CyanogenMod 9.0 Nightly and AOKP for GT-7200

I know GT-7200 comes already with ICS, but with my long experience seeing manufacturers bloating the stock rom with unwanted and sometimes system applications you can't install (in fact, you can, but sometimes they're attached to some framework and if you uninstall, you can mess up everything), I search for a custom rom for this tablet.

Updated 2012/06/28 - This procedure now is AOKP Compatible too.

Read this first:

Disregard stupid people saying stupid things without the minimum necessary knowledge to judge, I'll put here some pro and cons to use cm9 instead the stock one:

Pro:
* REAL GOOGLE APPS EXPERIENCE. Because Genesis just cut off part of google apps without any reason (faceunlock and gtalk are good examples). I've tried to figure out how made it work with stock one, without a minimium success. And yes, even video chat in native google talk works. And no, I don't want to use any 3rd party applications, since I only use gtalk and the google one is a very good piece of software compared to the other solutions (memory use, etc).
* Better framework. If genesis provide the DAMN GPLed OPEN SOURCE KERNEL, I was able to tune, help fixing bugs or even more, but no, Genesis doesn't even answer the customers by mail when you ask for it. If you don't know what I'm talking about, read the license of the linux kernel.
* Specific tunings by Cyanogen. And I'm not talking about "overclocking" ANYTHING. You can tune a little, for example, the native governor installed doesn't have a decent scalation, so when you turn off your screen, you still wasting your battery. I have almost 2h more using CM9 than STOCK, if I had the kernel sources of this device, I'll be able to port smartassV2 governor, so will be another story, another performance and another battery life. But as I said before, Genesis doesn't give a fuck to licenses and doesn't even give a fuck to his customers (I've sended 10 mails, a friend of mine have sended 8, none has been answered), and the worse? Doesn't give a fuck to android community AT ALL, he just get the software, put in his devices and you must deal with this. Don't you believe, right? So wait for 4.1 for your device. Coby does exactly the same with his customers.
* Some graphic tunings, because AFAIK Genesis doesn't know his device is 3D capable, cause most of 3D features of this gpu was disabled by default in stock rom. The last stock update activates the 3D, thats funny, its the only real update.
* The original ROM is against ALL TYPES of standards. For example: Busybox, AOSP, etc.

Cons:
Maybe you'll be off the official support using this, but you can always turn back using your backup or flashing back a stock rom, so, isn't a con at all.

Btw, you don't need to use if you don't want it, so just stop speaking bullshit when you don't have the little knowledge to know what the fuck you're talking about.

Pre-Requirements:

* You need A10 CWM Recovery (you use that little button for stock recovery to navigate in options and power button to choose one, and remember to nandroid backup)

Howto:

* Boot to CWM recovery (there's many ways to do that, google is your friend)
* Wipe everything
* Install the main cm9 nightlies or AOKP (If you have some problems with the last build, get the 20120607 from here).
* Install Gapps
* Install my patch (updated with lots of fixed 2012/06/28)
* Reboot

Update: If you have some problems and need help, please provide a logcat (it's impossible to understand what is happening without a logcat).

5/29/2012

Android tunings

If you don't know what this means, it's not for you.

/system/build.prop


1. Network

Sometimes you feel your device a little "clumsy" depending your connection. I really don't know why this happens. For example, at home my wifi is ok, but in some others is different (with same routers). Or even worse, some differences from carrier to carrier, and I'm not talking about latency (and don't start talking about android quality of connection because I've already feel the same using an iPad).
Sometimes.. you know.. if you doesn't use a custom rom because you really believe that the manufacturer knows what is the best for your phone, I'm really sorry for you.
This settings will give you a little more latency, you need a little test to see if fits for you.

net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960



2. Image related

Some manufacturers thinks you like this type of garbage, you can optimize this:
This one give the full quality for jpeg images (yes, sometimes you're not using what your device is capable):

ro.media.enc.jpeg.quality=100

Disable this, unless you like the red borders for strict applications

persist.sys.strictmode.disable=1
Render UI with GPU (yes, sometimes isn't turned on)

debug.sf.hw = 1
Improve the scrolling response

windowsmgr.max_events_per_sec = 120
Disables the surface dithering (if enable will improve image quality, at cpu cost)

persist.sys.use_dithering = 0
Use hardware acceleration to render videos.

video.accelerate.hw=1

3. Battery Related

Do you know about governors right? I you know all manufacturers (including sw ones like google, unfortunately) thinks no one needs a DECENT governor on your device, so your battery will sucks big time.
There's some types of governors for almost all devices that you HUGE increase the battery life without making your device a garbage, like smartassV2, interactiveX and Drewi's ondemand. but… if you don't use a custom rom and thinks that your manufacturer is the god of devices, just stop reading already :D.
You have a custom kernel with a custom governor? Good! Did you use smartassV2? Very good. Now some minor tunings.

Decrease the scan time of the wifi (will not hurt):

wifi.supplicant_scan_interval=150
This will improve the "deep sleep", but depends on kernel in some way

ro.ril.disable.power.collapse=0

Increase battery saving

pm.sleep_mode = 1


/data/local.prop

Based on supercharger script (because not all supercharger script settings are good to everyone, Ive filtered the best compatible options):

Define the OOM adj values for the classes of processes that can be killed by kernel.

ro.FOREGROUND_APP_ADJ=0
ro.VISIBLE_APP_ADJ=3
ro.SECONDARY_SERVER_ADJ=5
ro.BACKUP_APP_ADJ=6
ro.HOME_APP_ADJ=1
ro.HIDDEN_APP_MIN_ADJ=7
ro.CONTENT_PROVIDER_ADJ=8
ro.EMPTY_APP_ADJ=15

Define the memory threesholds at which the above process classes will be killed

ro.FOREGROUND_APP_MEM=1536
ro.VISIBLE_APP_MEM=2048
ro.SECONDARY_SERVER_MEM=6144
ro.BACKUP_APP_MEM=6656
ro.HOME_APP_MEM=1024
ro.HIDDEN_APP_MEM=6656
ro.CONTENT_PROVIDER_MEM=7168
ro.EMPTY_APP_MEM=7680





init.d Scripts

Of course, your ROM must support init.d scripts

/etc/init.d/03kernel

#!/system/bin/sh
#
echo "3" > /proc/sys/vm/drop_caches
echo "20" > /proc/sys/vm/swappiness
echo "15" > /proc/sys/vm/dirty_ratio
echo "70" > /proc/sys/vm/vfs_cache_pressure
echo "3000" > /proc/sys/vm/dirty_expire_centisecs
echo "500" > /proc/sys/vm/dirty_writeback_centisecs
echo "3" > /proc/sys/vm/dirty_background_ratio
echo "2048,4096,51200,56320,61440,70400" > /sys/module/lowmemorykiller/parameters/minfree
echo "veno" > /proc/sys/net/ipv4/tcp_congestion_control

AIX Clone

Many people will already know how to do this, since there's some (huge) machines you need lots of AIX Virtual Servers, and of course, you'll not make thousands of installs (will you?).


...and if the AIX boot partition fails?

First, you need to boot with an AIX installation disk or Diagnostics disk (Virtual I/O bootdisk also works) and go to maintanence mode. Choose the option to give you a shell (mounting rootvg, of course).
Just in case, this is a quite dangerous process, so you need to know what you're doing (and so, if you destroy the world, it's your fault, not mine).


9/26/2011

MenelkirMIUI for Nexus One


Custom MIUI for Nexus One.

What we have?
Juwe11's memory optimization script
Updated IntersectRaven kernel
* SmartassV2 Default Governor
* Custom Boot Animation (I dont know the author, post me a comment if you know)
* Latest MIUI.us build (1.9.23)

All updates goes to this folder:

http://minus.com/mbkyw3ZcVd

Also, this ROM are available at ROM Manager

MenelkirCM7 for Nexus One

Custom CyanogenMOD for Nexus One.

What we have?
Juwe11's memory optimization script
* Updated base apps
* S2E for an easily apps2ext management
* Updated IntersectRaven kernel
* SmartassV2 Default Governor
* Custom Boot Animation (I dont know the author, post me a comment if you know)
* Latest CyanogenMod 7 Nightly build (build 202)

All updates goes to this folder:

http://minus.com/mbrpWFOxzM

Also, this ROM are available at ROM Manager

8/25/2011

Menelkir Sense 1.3 for Nexus One

This is my first attempt to make a perfect Sense 1.8 for daily use. It's primary based on
eViL NXSense HD v.1.1_BETA (Official Desire HD Port) from eViL D:
Since this is my first release, there's nothing much significant (yet), only some cleaning, tweaks and updates.

SPECS (from eViL NXSense HD v1.1 BETA):
Desire HD build 1.15.405.1, 1.24.405.1, 1.28.405.1, 1.32.405.3, 1.32.405.6, 1.72.405.3
Quick boot from hibernation & built in reboot from power menu
Flip Clock
Blocked Callers
New Car Panel
BT & FM radio
HTC Hub & Likes
Updated Google apps
HTC Skins
HTC E-reader
HTC Power & DATA Control widget
Unified Mailbox.