I'm running out of options installing RDesktop 1.4.1. I know 1.6 is the most recent version, but I want to audit MS terminal servers without running Windows XP in a vm and I know 1.4.1 and 1.5 are the only versions that have patches allowing brute force attempts. I have X11 installed. I then download RDesktop... tar -xvf rdesktop-1.4.1.tar cd rdesktop-1.4.1 ./configure make ...this is where I get a make error 1 ld: library not found for -lX11 collect2: ld returned 1 exit status make: *** [rdesktop] Error 1 During the ./configure I notice I'm missing a lot of header files... checking for struct statfs.f_namelen... no checking for struct statvfs.f_namelen... no checking mntent.h usability... no checking mntent.h presence... no checking for mntent.h... no checking for setmntent... no checking sys/statfs.h usability... no checking sys/statfs.h presence... no checking for sys/statfs.h... no checking sys/vfs.h usability... no checking sys/vfs.h presence... no checking for sys/vfs.h... no ...which leads me to assume I'm missing some x11lib. I hop into xcode and reinstall x11sdk and still nothing. I have also installed fink and tried sudo apt-get install x11lib-dev and it cannot find that package. I the "x11lib-dev" might not be right but I cannot find the website that used that command, but I'm sure I got it right when I was on that website. I also did an apt-get update and did the same thing with fink to update the packages on both ends. Still no luck. Also I have the unstable packages available as well. I've been going at this for two days now and still no luck. Any help at all is greatly appreciated!