Packages which could be deleted for a hardened firewall host (via pkgrm) are highlighted in bold I've actually tested those in Blue. This should save diskspace reduce the need for future patches and improve reliability (through simplicity).
The big problem is interdependancy between packages.
system SUNWab2m Solaris Documentation Server Lookup
system SUNWadmap System administration applications
system SUNWadmc System administration core libraries
system SUNWadmfw System & Network Administration Framework
system SUNWadmr System & Network Administration Root
system SUNWatfsr AutoFS, (Root)
system SUNWatfsr AutoFS, (Usr)
system SUNWaudio Audio applications
system SUNWbcp SunOS 4.x Binary Compatibility
system SUNWcar Core Architecture, (Root)
system SUNWcarx Core Architecture, (Root) (64-bit)
system SUNWcg6 GX (cg6) Device Driver
system SUNWcg6x GX (cg6) Device Driver (64-bit)
system SUNWcpr Suspend, Resume package
system SUNWcprx Suspend, Resume package (64-bit)
system SUNWcsd Core Solaris Devices
system SUNWcsl Core Solaris, (Shared Libs)
system SUNWcslx Core Solaris Libraries, (64-bit)
system SUNWcsr Core Solaris, (Root)
system SUNWcsu Core Solaris, (Usr)
system SUNWcsxu Core Solaris, (Usr) (64-bit)
CTL SUNWctpls Portable layout services for Complex Text Layout support
CTL SUNWctplx Portable layout services for CTL (64-bit)
system SUNWdfb Dumb Frame Buffer Device Drivers
system SUNWdoc Documentation Tools
system SUNWdtbas CDE application basic runtime environment
system SUNWdtbax CDE application 64 bit basic runtime environment
system SUNWdtcor Solaris Desktop /usr/dt filesystem anchor
system SUNWdtdmn CDE daemons
system SUNWdtdst CDE Desktop Applications
system SUNWdtdte Solaris Desktop Login Environment
system SUNWdtezt Solaris Desktop Extensions Applications
system SUNWdthe CDE HELP RUNTIME
system SUNWdthev CDE HELP VOLUMES
system SUNWdthez Desktop Power Pack Help Volumes
system SUNWdthj HotJava Browser for Solaris
system SUNWdticn CDE icons
system SUNWdtim Solaris CDE Image Viewer
system SUNWdtlog System boot for Desktop Login
system SUNWdtrme CDE Release Documentation
system SUNWdtwm CDE DESKTOP WINDOW MANAGER
system SUNWenise Base Partial Locales
system SUNWesu Extended System Utilities
system SUNWesxu Extended System Utilities (64-bit)
system SUNWeuise European Partial Locales
system SUNWfdl Font Downloader
system SUNWfns Federated Naming System
system SUNWfnsx Federated Naming System (64-bit)
system SUNWftpr FTP Server, (Root)
system SUNWftpu FTP Server, (Usr)
system SUNWgsdhx GSS Diffie-Hellman (64-bit)
system SUNWgss GSSAPI V2
system SUNWgssdh GSS Diffie-Hellman
system SUNWgssk kernel GSSAPI V2
system SUNWgssx GSSAPI V2 (64-bit)
system SUNWhmd SunSwift SBus Adapter Drivers
system SUNWhmdu SunSwift SBus Adapter Headers
system SUNWhmdx SunSwift SBus Adapter Drivers (64-bit)
system SUNWi15rf X11 ISO-8859-15 required fonts
system SUNWinst Install Software
system SUNWipc Interprocess Communications
system SUNWipcx Interprocess Communications (64-bit)
system SUNWislcc XSH4 conversion for Eastern European
locales
system SUNWislcx 64-bit iconv conversion for Eastern European locales
system SUNWisolc XSH4 conversion for ISO Latin character sets
system SUNWisolx 64-bit iconv conversion for ISO Latin character sets
system SUNWjvjit Java JIT compiler
system SUNWjvrt JavaVM run time environment
system SUNWkey Keyboard configuration tables
system SUNWkvm Core Architecture, (Kvm)
system SUNWkvmx Core Architecture, (Kvm) (64-bit)
system SUNWlibC Sun Workshop Compilers Bundled libC
system SUNWlibCf SunSoft WorkShop Bundled libC (cfront version)
system SUNWlibCx Sun WorkShop Bundled 64-bit libC
system SUNWlibms Sun WorkShop Bundled shared libm
system SUNWlmsx Sun WorkShop Bundled 64-bit shared libm
system SUNWloc System Localization
system SUNWlocx System Localization (64-bit)
system SUNWlpmsg LP Alerts
system SUNWmfrun Motif RunTime Kit
system SUNWmibii Solstice Enterprise Agents 1.0.3 SNMP daemon
system SUNWnisr Network Information System, (Root)
system SUNWnisu Network Information System, (Usr)
system SUNWntpr NTP, (Root)
system SUNWntpu NTP, (Usr)
system SUNWolaud OPEN LOOK Audio applications
system SUNWolbk OpenWindows online handbooks
system SUNWoldcv OPEN LOOK document and help viewer applications
system SUNWoldst OPEN LOOK deskset tools
system SUNWoldte OPEN LOOK Desktop Environment
system SUNWolimt OPEN LOOK imagetool
system SUNWolrte OPEN LOOK toolkits runtime environment
system SUNWos86u Platform Support, OS Functionality (Usr)
system SUNWowbcp OpenWindows binary compatibility
system SUNWowrqd OpenWindows required core package
system SUNWpcelx 3COM EtherLink III PCMCIA Ethernet Driver
system SUNWpcmci PCMCIA Card Services, (Root)
system SUNWpcmcu PCMCIA Card Services, (Usr)
system SUNWpcmcx PCMCIA Card Services, (64-bit)
system SUNWpcmem PCMCIA memory card driver
system SUNWpcr SunSoft Print - Client, (root)
system SUNWpcser PCMCIA serial card driver
system SUNWpcu SunSoft Print - Client, (usr)
system SUNWplcx Partial Locales (64-bit)
system SUNWploc Partial Locales
system SUNWploc1 Supplementary Partial Locales
system SUNWplow OpenWindows enabling for Partial Locales
system SUNWpmowr Power Management OW Utilities, (Root)
system SUNWpmowu Power Management OW Utilities, (Usr)
system SUNWpmr Power Management config file and rc script
system SUNWpmu Power Management binaries
system SUNWpmux Power Management binaries (64-bit)
system SUNWpsdpr PCMCIA ATA card driver
system SUNWpsf PostScript filters - (Usr)
system SUNWpsr SunSoft Print - LP Server, (root)
system SUNWpsu SunSoft Print - LP Server, (usr)
system SUNWpwb Power Button Driver
system SUNWpwbx Power Button Driver (64-bit)
system SUNWqfed Sun Quad FastEthernet Adapter 32bit Driver
system SUNWqfedx Sun Quad FastEthernet Adapter 64Bit Driver
system SUNWrdm On-Line Open Issues ReadMe
system SUNWrsg RPCSEC_GSS
system SUNWrsgk kernel RPCSEC_GSS
system SUNWrsgx RPCSEC_GSS (64-bit)
system SUNWsacom Solstice Enterprise Agents 1.0.3 files for root file system
system SUNWsadmi Solstice Enterprise Agents 1.0.3 Desktop Management Interface
system SUNWsadmx Solstice Enterprise Agents 1.0.3 Desktop Management Interface Libraries
(64-bit)
system SUNWsasnm Solstice Enterprise Agents 1.0.3 Simple Network Management Protocol
system SUNWsasnx Solstice Enterprise Agents 1.0.3 Simple Network Management Protocol
Libraries (64-bit)
system SUNWscbcp SPARCompilers Binary Compatibility Libraries
system SUNWscplp SunSoft Print - Source Compatibility, (Usr)
system SUNWscpr Source Compatibility, (Root)
system SUNWscpu Source Compatibility, (Usr)
system SUNWsndmr Sendmail root
system SUNWsndmu Sendmail user
system SUNWsolnm Solaris Naming Enabler
system SUNWspl Spell Checking Engine - Base Release (English)
system SUNWsregu Solaris User Registration
system SUNWswmt Install and Patch Utilities
system SUNWtltk ToolTalk runtime
system SUNWtltkx ToolTalk 64 bit library
system SUNWtoo Programming Tools
system SUNWtoox Programming Tools (64-bit)
system SUNWuiu8 Iconv modules for UTF-8 Locale
system SUNWuiu8x Iconv Modules for UTF-8 Locale (64-bit)
system SUNWuxfl1 SUNW,Ultra-1 FLASH PROM Update
system SUNWuxflr Sun4u FLASH PROM update generic components, (Root)
system SUNWuxflu Sun4u FLASH PROM Update generic components, (Usr)
system SUNWvolg Volume Management Graphical User Interface
system SUNWvolr Volume Management, (Root)
system SUNWvolu Volume Management, (Usr)
system SUNWvolux Volume Management, (Usr) (64-bit)
system SUNWwsr Solaris Product Registry & Web Start runtime support
system SUNWxcu4 XCU4 Utilities
system SUNWxfb Elite3D/Creator Common Driver Routines
system SUNWxfbx Elite3D/Creator Common Driver Routines (64-bit)
application SUNWxgldg XGL Generic Loadable Libraries
application SUNWxgler XGL English Localization
application SUNWxglft XGL Stroke Fonts
application SUNWxglrt XGL Runtime Environment
system SUNWxi18n X Window System Internationalization
Common Package
system SUNWxi18x X Window System Internationalization Common Package (64-bit)
application SUNWxildh XIL Loadable Pipeline Libraries
application SUNWxilow XIL Deskset Loadable Pipeline Libraries
application SUNWxilrl XIL Runtime Environment
application SUNWxilvl VIS/XIL Support
system SUNWxwacx AccessX client program
system SUNWxwcft X Window System common (not required) fonts
system SUNWxwdv X Windows System Window Drivers
system SUNWxwdvx X Windows System Window Drivers (64-bit)
system SUNWxwfnt X Window System platform required fonts
system SUNWxwfs Font server
system SUNWxwice ICE components
system SUNWxwicx X Window System ICE 64-bit library
system SUNWxwmod OpenWindows kernel modules
system SUNWxwoft X Window System optional fonts
system SUNWxwopt nonessential MIT core clients and server extensions
system SUNWxwplt X Window System platform software
system SUNWxwplx X Window System 64-bit library software
system SUNWxwpsr Sun4u-platform specific X server auxiliary filter modules
system SUNWxwrtl X Window System & Graphics Runtime Library Links in /usr/lib
system SUNWxwrtx X Window System 64-bit Runtime Compatibility Package
system SUNWxwslx X Window System 64-bit lint libraries
eof