X11 and security

Back in the "good 'ol days" (before internet crime became so prevalent) I used to set up X Windows on a host of different systems, run 1 X11 app on one machine and had it display on another, etc. etc. etc. (all that stuff that made X11 great).
Nowadays I've heard of so many security "loopholes" with X11 that I'm almost afraid to run it. I'm a software developer but NOT a security expert (more like security dimwit). Our current cross platform development environment has some Windows XP systems, FreeBSD, Linux, Solaris, and of course, several OS X systems on it (ranging from Panther to Leopard). We use Cygwin on the Windoze machines FWIW.
Back in the "good 'ol days" we used to use xhost+ to allow access to all machines, and copy files between systems using rcp. Nowadays, xhost+ is gone and we use scp or rsync for file transfer, and we don't even bother mapping the display of a program running on one system to the X display of another.
My question is this: Is there a way that I can securely map a display from one system to another? Allow me to provide a scenario:
1. I compile and test something on OS X, and it works.
2. I now want to port, compile, and test it on one of the non-OS X systems, but instead of doing an scp or rsync of the code and then moving to the actual machine, I would like to copy the code over with scp or rsync and then map the display from the target machine to the OS X machine, but DO IT SECURELY.
I know there are ways to do this via ssh, but they seem script/terminal oriented (or possibly I don't understand the process fully). What's the best and easiest way to run X11 AND remain secure?
Thanks in advance,
OSX Fan

Dear Bob,
sorry if the format of this posting may not be correct (it is more of a personal request for help from help) but I need someone who is rather skilled on security and Windows to look into my note below.
I have had horrible security experiences with PCs which I needed to use for my job as XP Home Edition and now that I came back to Mac the same criminals who stole personal and financial info from me from two XP platforms, managed to bother me even on Leopard, of course, using a basic Microsoft server connection. FYI I have MAC addresses and IPs which are connected to the same peopole who were reported last year to the authorities.
I'll discuss the problem with a technician if there actually was a security breach but my computer has been self-'copying' important files, limiting my permissions periodically and I keep finding changes in my preferences. There definitely is an intrusion and it happens through a responder (MDS?), but I don't seem to find a final way to eliminate it. Repairing prefs and fsck did help a bit but did not block the responder. How can someone break in without access to my complicated passwords?
I am a user, not a programmer, but I consider myself very proficient in troubleshooting anything with system 10.X but this one problem just reminds me of previous DOS XP intrusion by professional thieves.
Am I supposed to have all these processes even if I am directly connected to a cable modem via router?
Active Memory: 375.10 MB
Free Memory: 1.46 GB
Wired Memory: 139.80 MB
Used Memory: 547.96 MB
Inactive Memory: 33.05 MB
Total VM: 32.91 GB
Number of processes: 58
ID Process Name User CPU RSIZE VSIZE
0 kernel_task root 3.3 100.92 MB 156.52 MB
1 launchd root 0.0 588.00 KB 18.65 MB
10 kextd root 0.0 1.22 MB 586.16 MB
11 notifyd root 0.0 484.00 KB 586.15 MB
12 syslogd root 0.0 792.00 KB 587.61 MB
14 ntpd root 0.0 872.00 KB 586.11 MB
15 cron root 0.0 656.00 KB 586.66 MB
16 update root 0.0 296.00 KB 585.54 MB
17 SystemStarter root 0.0 680.00 KB 585.58 MB
20 securityd root 0.0 1.63 MB 587.28 MB
22 nfsd root 0.0 816.00 KB 590.73 MB
23 mds root 0.0 22.52 MB 714.77 MB
24 mDNSResponder _mdnsrespo 0.0 1.32 MB 587.47 MB
25 loginwindow adamjweber 0.0 5.29 MB 753.53 MB
26 KernelEventAgent root 0.0 660.00 KB 585.65 MB
28 hidd root 0.0 608.00 KB 586.07 MB
29 fseventsd root 0.0 1.20 MB 592.51 MB
31 dynamic_pager root 0.0 620.00 KB 585.58 MB
33 diskarbitrationd root 0.0 1.00 MB 585.67 MB
34 DirectoryService root 0.0 3.34 MB 588.77 MB
36 configd root 0.0 1.96 MB 587.17 MB
39 autofsd root 0.0 688.00 KB 585.59 MB
40 socketfilterfw root 0.0 1.52 MB 585.91 MB
43 distnoted daemon 0.0 752.00 KB 585.56 MB
46 coreservicesd root 0.0 17.39 MB 607.14 MB
47 blued root 0.0 2.13 MB 28.23 MB
52 rpc.lockd root 0.0 388.00 KB 585.65 MB
54 rpc.statd root 0.0 368.00 KB 841.57 MB
55 portmap daemon 0.0 372.00 KB 17.53 MB
56 WindowServer _windowser 22.8 50.71 MB 259.15 MB
57 rpc.lockd root 0.0 232.00 KB 585.66 MB
58 rpc.rquotad root 0.0 372.00 KB 586.08 MB
78 coreaudiod root 0.0 944.00 KB 586.25 MB
82 qmasterd root 0.0 3.83 MB 602.01 MB
83 qmasterd root 0.0 4.04 MB 602.08 MB
86 diskimages-helpe root 0.2 3.05 MB 605.51 MB
90 hdiejectd root 0.0 1.01 MB 585.60 MB
97 launchd adamjweber 0.0 536.00 KB 17.65 MB
102 Folder Actions Dispatcher adamjweber 0.0 2.79 MB 747.13 MB
103 AirPort Base Station Agen adamjweber 0.0 2.96 MB 211.33 MB
107 Spotlight adamjweber 0.0 6.04 MB 749.68 MB
108 UserEventAgent adamjweber 0.0 2.02 MB 588.52 MB
110 pboard adamjweber 0.0 592.00 KB 586.60 MB
111 ATSServer adamjweber 0.0 4.42 MB 645.59 MB
112 Dock adamjweber 0.0 15.17 MB 782.26 MB
115 SystemUIServer adamjweber 0.0 13.68 MB 798.18 MB
116 Finder adamjweber 0.0 61.76 MB 912.06 MB
128 KUC adamjweber 0.0 5.93 MB 798.94 MB
129 RealPlayer Downloader Age adamjweber 0.1 2.71 MB 747.29 MB
130 RPDLAgentHelperD adamjweber 0.0 12.87 MB 590.25 MB
134 iChatAgent adamjweber 0.0 2.68 MB 726.63 MB
140 Firefox adamjweber 0.5 36.58 MB 850.14 MB
165 mdworker nobody 0.0 2.86 MB 599.05 MB
168 mdworker adamjweber 0.0 4.16 MB 632.46 MB
220 Activity Monitor adamjweber 23.3 21.86 MB 857.06 MB
221 pmTool root 2.2 1.37 MB 595.65 MB
232 authorizationhos root 0.0 1.52 MB 596.75 MB
233 SecurityAgent _securitya 0.0 8.58 MB 797.55 MB
I truly thank Bob or anyone else in advance who can spot a definite intrusion, so that I can take care of this and with the authorities.
Best regards,
SMarescotti

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=================
==Properties Idea's
=================
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=================
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