Technology Errors

vsftpd: pam_listfile(vsftpd:auth): Refused user root for service vsftpd

If you are attempting to FTP to a server running vsftpd as its FTP daemon you will be refused if this is a default vsftpd installation. It is strongly recommended to not allow root access to FTP because of security concerns which would provide the ftp user access to destroy anything on the server running FTP at will. Regardless it might be necessary for specific tasks and the below information will assist you in configuring vsftpd to allow the root user to login.

Technology Errors

BtScanner Compile Error: cc1: error: unrecognized command line option -Wimplicit-function-dec

While doing some testing this evening I ran into all sorts of errors when attempting to compile a new version of btscanner on Backtrack Linux 5 R3. Luckily it is super easy to resolve the error complaining about an unrecognized command named -Wimplicit-function-dec. This error will display when attempting to run “make” against an already configured (./configure) btscanner source. Below we output the error in more detail, explain how to resolve the error by editing the make file, and then display the compilation process moving past the error.

Technology Errors

Backtrack Linux Configure Error: No package check found

While compiling some earlier versions of bluez, which provides support for core bluetooth layers and protocols, I ran into a minor error. The error complained about no check being available. Read below to see the initial error when running ./configure and how to install the check package to resolve the errors. Installing the check package will fix this problem likely on any platform but for sure on Ubuntu 10.04 since Backtrack Linux is currently built on that platform.

Technology Errors

Error Compiling pwntcha On Backtrack Linux – image.c:28:5: error: #error No imaging library

While troubleshooting some issues with pwntcha which is installed by default on Backtrack Linux version 5 R3 I received some errors compiling pwntcha from source. The Imlib2 development files need to be installed before compiling pwntcha from source on Backtrack Linux 5 R3 or Ubuntu 10.04. Below I provide the output from the pwntcha compile errors as well as show the install command for the package that needs to be installed before pwntcha will compile without errors.

Technology Errors

Use of uninitialized value within @runpath in concatenation (.) or string at ./snmpcheck-1.8.pl line 617.

When running snmpcheck, a SNMP enumeration tool found in Backtrack Linux, against Ubuntu 10.04 Lucid Lynx or Backtrack Linux it is likely you will receive some errors in the output. The errors occur when the running processes from the Linux server are enumerated. Below we show example output from the command when the errors are intact as well as a quick fix so you won’t have to modify the output for reports.