From Bugzilla Helper:
User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.4.2-2 i686)

Description of problem:
Vnc is one of the few network services not protected by tcpd.   Wolfram
Gloger has
provided a patch to fix that..  I've attached it below.

How reproducible:
Always

Steps to Reproduce:
1.Not applicable
2.
3.
	

Additional info:

You have to specify ip numbers in hosts.allow.  Domains or host names won't
work.

The patch doesn't add libwrap to the linking phase.  You need to make this
patch to vnc.spec:

*** vnc.spec    2001/05/17 05:25:17     1.2
--- vnc.spec    2001/05/17 04:57:35
***************
*** 17,22 ****
--- 17,23 ----
  Patch2:    vnc-xauth.patch
  Patch3:    vnc-typo.patch
  Patch4:    vnc-corre.patch
+ Patch5:    %{name}-%{version}-tcpwrappers.patch
  License:   GPL
  Group:     User Interface/Desktops
  BuildRoot: %{_tmppath}/%{name}-%{version}-root
***************
*** 59,64 ****
--- 60,66 ----
  %patch2 -p1 -b .xauth
  %patch3 -p1 -b .typo
  %patch4 -p1 -b .corre
+ %patch5 -p1 -b .tcpwrappers
 
  find . -name "*,v" -exec rm -f {} \;
  perl -pi -e "s|/usr/local/vnc/classes|%{_datadir}/vnc/classes|" vncserver
***************
*** 67,73 ****
  xmkmf -a
  make CDEBUGFLAGS="$RPM_OPT_FLAGS" World
  cd Xvnc
! make CDEBUGFLAGS="$RPM_OPT_FLAGS" World
 
  %install
  rm -rf %{buildroot}
--- 69,75 ----
  xmkmf -a
  make CDEBUGFLAGS="$RPM_OPT_FLAGS" World
  cd Xvnc
! make EXTRA_LIBRARIES='-lwrap -lnss_nis' CDEBUGFLAGS="$RPM_OPT_FLAGS"
World
 
  %install
  rm -rf %{buildroot}