Hello, On Thu, Feb 3, 2011 at 9:51 PM, Guy Harris <[email protected]> wrote: > > On Jan 19, 2011, at 1:02 AM, M.Baris Demiray wrote: > >> First of all, we're developing radio communication software, >> particularly STANAG 5066. Alongside the serial interface for the modem >> interface our implementation also has a socket interface for testing >> purposes. >> >> Now we have the need of saving STANAG 5066 PDUs into .pcap files to >> analyze them later using our experimental STANAG 5066 DPDU (Data >> Transfer Sublayer PDU) dissector. My ex-colleague, who wrote the >> dissector, wrote it for the purpose of dissecting DPDUs captured from >> the socket interface with prepending TCP header. But I, as the new >> maintainer of this dissector, need to dissect raw STANAG 5066 PDUs now >> since I modified the Data Transfer Sublayer (of STANAG 5066) to >> maintain a .pcap file and to save incoming DPDUs into this file with >> relevant record headers. > > OK, what do you mean by "raw STANAG 5066 PDUs"? > > http://www.isode.com/whitepapers/stanag-5066.html
As stated in the Isode white paper there may or may not be an encryption device placed between STANAG 5066 Server and the HF Modem but in both ways the interface of STANAG 5066 Server and HF Modem or the encryption device is defined as RS-232 in STANAG 5066 Annex E. For testing purposes we implemented a TCP/IP interface between STANAG 5066 Servers (among two MAC layers) to let developer test her code without a need of a modem or a radio before passing it to someone else for the later test steps. That's why the dissector we had before was looking for a TCP header in front of the STANAG 5066 DPDUs. And what I tried to mean by "raw STANAG 5066" was a DPDU with no prepending TCP header. > says "At the modem level, STANAG 5066 uses packets (DPDUs) of a size > appropriate to the modem speed." Are those the raw PDUs? > > It also speaks of the "SIS protocol", which appears to be the low-layer > protocol used to communicate with the "STANAG 5066 server", which appears to > act as a gateway between applications and the STANAG 5066 radio layer.- Exactly, > This is the tcpdump-workers list. > Visit https://cod.sandelman.ca/ to unsubscribe. -- M. Baris Demiray - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
