<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:D="DAV:" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I have an application that consists of four different programs that all talk to each other via TCP sockets… Similar to the diagram:<o:p></o:p> +---------+<o:p></o:p> +-------| ServerA |------+<o:p></o:p> | +---------+ |<o:p></o:p> | | |<o:p></o:p> +----------------+ | +---------+ <o:p></o:p> | UserApp Client |---|-----| ServerB | <o:p></o:p> +----------------+ | +---------+ <o:p></o:p> | | |<o:p></o:p> | | |<o:p></o:p> | +--------+ |<o:p></o:p> +-------| Logger |------+<o:p></o:p> +--------+<o:p></o:p> <o:p> </o:p> The ServerA, ServerB, and Logger all run from xinetd.<o:p></o:p> The "UserApp Client" is the only program directly executed via the user.<o:p></o:p> All programs read from a common settings file in /etc.<o:p></o:p> <o:p> </o:p> With Fedora Core 9, I've used the polgengui to create initial policies for the four programs.<o:p></o:p> Then since they share the settings file, I edited the definitions so that configuration file is not specific to any one of the programs.<o:p></o:p> They all need to share port information, so I added require { myservera_port_t; myserverb_port_t; mylogger_port_t } statements to each .te file.<o:p></o:p> That seems to work on FC9, but on RedHat EL 5.2, when attempting to load myservera, it complains:<o:p></o:p> /usr/sbin/semodule -i myservera.pp<o:p></o:p> libsepol.print_missing_requirements: myservera's global requirements were not met: type/attribute myserverb_port_t<o:p></o:p> libsemanage.semanage_link_sandbox: Link packages failed<o:p></o:p> /usr/sbin/semodule: Failed!<o:p></o:p> <o:p> </o:p> Attempting to load myserverB first ends up with the same complaint about the serverA's port_t being undefined.<o:p></o:p> <o:p> </o:p> I had kept the .te files for the four programs separate… but this message makes me think that maybe I need to combine them. Is that necessary? Or is there a way to pre-define the ports before the "require from somewhere else" statement?<o:p></o:p> <o:p> </o:p> For my four programs, should I have four distinct policy_module statements?<o:p></o:p> Is it possible to have multiple policy_module statements in the same .te file? <o:p></o:p> Also, I seem to be having domain transfer problems.<o:p></o:p> I added this following code to each .te file:<o:p></o:p> domain_auto_trans(unconfined_t, myapp_exec_t, myapp_t )<o:p></o:p> allow unconfined_t myapp_t:fd use;<o:p></o:p> allow myapp_t unconfined_t:fifo_file rw_file_perms;<o:p></o:p> allow myapp_t unconfined_t:process sigchld;<o:p></o:p> however, each process still runs as follows:<o:p></o:p> unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 32504 pts/4 00:00:00 myapp<o:p></o:p> unconfined_u:system_r:inetd_child_t:s0-s0:c0.c1023 32508 ? 00:00:00 myserverb<o:p></o:p> unconfined_u:system_r:inetd_child_t:s0-s0:c0.c1023 32512 ? 00:00:00 mylogger<o:p></o:p> <o:p> </o:p> For the inetd daemons, is this something I should try to fix, or is unconfined_u:system_r:inetd_child_t "secure enough"?<o:p></o:p> Any suggestions for getting the myapp domain transferred?<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> Thanks,<o:p></o:p> Brian<o:p></o:p> <o:p></o:p> <o:p> </o:p> </div> </body> </html>