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LASAT Masquerade PRO

The LASAT Masquerade 2 and later Masquerade PRO were created in 1998-2001 by LASAT Networks, as part of a product line of self-contained SOHO all-in-one servers (firewall/NAT/router, mail server etc.) and VPN gateways (the SafePipe series, which has less RAM and no IDE controller, and is thus less interesting for general-purpose use).

Unfortunately the company went bust, so very few of these devices were ever shipped, but they still fulfill their original purpose very well.

The Debian project still uses two Masquerade PRO, donated by LASAT, as MIPS autobuilders.


Feature Masquerade 2
(SafePipe 100/200)
Masquerade PRO
(SafePipe 1000/2000/5000)
Size 1U 1U
Processor NEC VR4310 NEC R5000
System Controller Galileo GT-64115 NEC VRC5074
Clock freq. 133/166 MHz 250 MHz
Cache 32KB instruction + 16KB data L1: 32KB instruction + 32KB data L2: 1024KB
Network 2xAMD Am79C972 PCnet32 10/100Mbps 2xAMD Am79C972 PCnet32 10/100Mbps
IDE CMD643 IDE controller CMD643 IDE controller
Harddisk Room for 1x3.5" HD Room for 1x3.5" HD
RAM 16-128MB SDRAM SIMM 128MB on-board SDRAM (100MHz)
Flash 4MB? 4MB
Compressed kernel image limited to 1MB (2MB by overwriting FileSystem partition)
Expansion 1xPCI slot 1xPCI slot (32-bit 66MHz)
  • PICVUE 2x16 LCD display
  • DS1603 RTC
  • HIFN 9710 compression chip
  • Address Filter FPGA
  • Ethernet TX/RX swap
  • Siemens PSB2115 ISDN BRI
  • PICVUE 2x16 LCD display
  • DS1603 RTC
  • HIFN 9710 compression chip
  • Address Filter/DMA Controller FPGA
  • Ethernet TX/RX swap
  • HDLC controller (V.35/X.25)
  • Hardware noise generator
Console Optional RS-232 header on PCB Optional RS-232 header on PCB
Documentation Design Specification

Board Schematics

Design Specification

Board Schematics

Linux-mips tested OK

2.6.18.x- NOT working/supported tested OK

Note: Features in red are not supported by the current linux-mips kernel releases. Features in amber are only known to work in certain older kernels.


Block diagrams

Serial Cable

If you want to do any debugging on your Masquerade, you'll need a serial cable. The cable conncets to the 6-pin (only 3 used) header on the PCB (J2). This header is not mounted on all boards, if it is missing you'll need to mount the header plus an RS-232 buffer (IC34), see the board design specification for details on which part to use. The cable design can be found here.


The LASAT devices have a "service mode" where you can use a special tool to upload a new kernel to the device. The protocol used is called EUCP, and documentation can be found at this link: [1]. Tools to create the images and upload the files are available on the Debian instructions page, see Links.


No Linux distributions provide dedicated support for the Masquerade Pro, but the Debian port for Cobalt Qube works very well on these devices.


Currently, Thomas Horsten maintains the kernel port for these devices. E-mail address is firstname @ lastname dot com.