vjt

Running tcpdump on remote hosts with no storage

If you have tcpdump on your embedded home router and you want to see what traffic your crippled phone is doing, you can dump traffic on the router and visualise it on your main workstation using wireshark.

1. On the remote host, create a FIFO

remotehost# mkfifo /tmp/tcpdump

mhofman

Web Service Fronting

Multiple Web properties on a single IP address

Hosting multiple websites on a single public IP address on the standard HTTP(S) ports is relatively easy with popular web servers like Apache, Nginx and lighttpd all supporting Virtual Hosts.
For Web Services which bundle their own HTTP server, things get more complicated, unless their HTTP stack can be shared somehow. More often than not, the application's HTTP stack listens directly on a dedicated TCP port.

Hosting multiple services on a single IP then requires using a fronting server listening on the standard HTTP port, and routing to the right backend service based on the host name or the path sent by the client.
Path based routing is cumbersome, usually requiring either the service to be aware of the path prefix, or a rewrite by the HTTP fronting server of all absolute URLs in the requests and responses.
Hostname based routing is more straightforward. The fronting server can just look at the [HTTP/1.1 Host header](https://tools

dojoe

On systems with UEFI Secure Boot enabled, recent Linux kernels will only load signed modules, so it's about time DKMS grew the capability to sign modules it's building.

These scripts are extended and scriptified variants of https://computerlinguist.org/make-dkms-sign-kernel-modules-for-secure-boot-on-ubuntu-1604.html and https://askubuntu.com/questions/760671/could-not-load-vboxdrv-after-upgrade-to-ubuntu-16-04-and-i-want-to-keep-secur/768310#768310 and add some error checking, a passphrase around your signing key, and support for compressed modules.

dkms-sign-module is a wrapper for the more generic sign-modules which can also be used outside of DKMS.

Installation

1. Create a directory under /root, say /root/module-signing, put the three scripts below in there and make them executable: chmod u+x one-time-setup sign-modules dkms-sign-module

hamzasood

#import <UIKit/UIKit.h>
#import <objc/runtime.h>

// Hook with ObjC runtime functions
%config(generator=internal)

// New methods created below
@interface UIGestureRecognizer ()
+ (void)hs_beginForcingAllNewGestureRecognizersToAllowPencilInput;
+ (void)hs_endForcingAllNewGestureRecognizersToAllowPencilInput;