PIX-ZILLA is the result of a Cisco Pix 520 Firewall (PIX-520-UR-CH) that has been upgraded, tweaked, and modified to its ABSOLUTE MAXIMUM potential. Cisco Pix 520's cannot get any bigger, faster, or more capable. Period.

With a Pentium III class 1.4 GHz (Pentium IV Speed) processor, an UNRESTRICTED Pix 6.3(5) License, 6 Fast Ethernet interfaces, and 768MB of ram, PIX-ZILLA outperforms EVERY PIX Firewall manufactured by CISCO!

Take the FASTEST Pix firewall available, and add an Unmatched 5 Year Warranty on parts & labor, Brand New Antec Power Supply, CPU Heatsink Fan & Case Fan, and a Brand New Sony Floppy Disk Drive, and you get

The Fastest & Most Reliable Pix 520's being sold on eBay!

I can proudly make this claim because only Flantec Pix-Zilla's come with brand new power supplies, case fans, cpu heatsink fans and floppy drives. This is how I am able to provide a 5 year warranty with every unit.

The 6 fast ethernet interfaces allow for up to 4 DMZ networks in addition to the standard inside and outside interfaces. 3DES-AES encryption will allow for safe secure encrypted VPN transmissions. When purchased as a pair, you can either have a perfect failover firewall set to increase the fault tolerance of your network, or you can have 2 optimal VPN endpoints to link separate networks safely across the Internet.

Reliability is THE MOST IMPORTANT feature of EVERY Flantec Pix-Zilla Firewall.

Before any Pix-Zilla is prepared for sale, it is subjected to the following regiment:
  • The firewall is completely disassembled down to the naked chassis, where it is cleaned
  • The original power supply, case fan, CPU cooling fan and floppy drive are discarded (regardless of their working condition) and are replaced with brand new Antec, Intel and Sony components
  • All other internal components are cleaned and inspected
  • The motherboard is upgraded to the last version of the Intel BIOS, P17.
  • All non-Micron/Crucial Memory is discarded and all Micron Memory is subjected to no less than 24 continuous hours of MemTest86 testing. Any Dimm that exhibits a single error during that period is permanently discarded.
  • After reassembly, every pix is placed within a production environment sustaining multiple simultaneous 3DES & AES-256 vpn connections for no less than 72 hours with traffic passing across each interface.
All of this testing is performed prior to sale so that the purchasers of my firewalls are not the ones who ultimately have to "test" the equipment in their own live production environments.


The Pix 520 was the predecessor to the Pix 525 and 535 and was Cisco's enterprise-class Cisco firewall. ALL Pix 520's were originally manufactured by Cisco with CPU's that were Pentium II class, from 233MHz - 350MHz. There was never a Pix 520 manufactured by Cisco with a CPU faster than 350MHz.

The absolutely fastest CPU that can be placed into a Pix 520 (provided that it has a specific revision of the Intel SE440BX-2 motherboard with the necessary BIOS version installed, a specific slot 1 adapter, and specific verision of the Intel CPU ) is a Pentium III class 1.4GHz with a 100MHz front side bus. Without replacing the original motherboard, the fastest CPU that can be placed into most 520's is a Pentium III 600MHz (Cisco Pix 525 equivalent).

Flantec PIX-ZILLA 1.4GHz
535 with 1GHz CPU
525 with 600MHz CPU
515e with 433MHz CPU
520 with 350MHz CPU
506 with 200MHz CPU
501 with 133MHz CPU

Cost Comparison:
Pix 525

Pix 535

CPU Pentium III 600 Pentium III 1000 MHz Pentium III class 1.4 GHz
RAM 256MB unknown 768MB
Interfaces 6 2 6
Recent Price $1295 $3215 Only $1495
Warranty only 180 days! only 1 year! 5 Years included
Power Supply Used Used BRAND NEW Antec 400+ watt
CPU Fan Used Used BRAND NEW Antec CPU Cooler
Case Fan Used Used BRAND NEW Antec 92mm
Floppy Drive N/A N/A BRAND NEW Sony


Sh Mem
pixfirewall# sh mem
Free memory: 742324304 bytes
Used memory: 62982064 bytes
------------- ----------------
Total memory: 805306368 bytes

pixfirewall# sh ver
Cisco PIX Firewall Version 6.3(5)
Cisco PIX Device Manager Version 3.0(4)

Compiled on Thu 04-Aug-05 21:40 by morlee

pixfirewall up 7 secs

Hardware: SE440BX2, 768 MB RAM, CPU Pentium II 1397 MHz
Flash i28F640J5 @ 0x300, 16MB
BIOS Flash AT29C257 @ 0xfffd8000, 32KB

0: ethernet0: address is 00d0.b70b.2815, irq 11
1: ethernet1: address is 0090.275c.90e4, irq 10
2: ethernet2: address is 00e0.b601.708a, irq 15
3: ethernet3: address is 00e0.b601.7089, irq 9
4: ethernet4: address is 00e0.b601.7088, irq 11
5: ethernet5: address is 00e0.b601.7087, irq 100
Licensed Features:
Failover: Enabled
VPN-DES: Enabled
VPN-3DES-AES: Enabled
Maximum Physical Interfaces: 6
Maximum Interfaces: 12
Cut-through Proxy: Enabled
Guards: Enabled
URL-filtering: Enabled
Inside Hosts: Unlimited
Throughput: Unlimited
IKE peers: Unlimited

This PIX has an Unrestricted (UR) license.

Serial Number: 1800xxxx (000000000)

Pix Device Manager (PDM):
For Pix administrators who feel more comfortable in the GUI, every Flantec PIX-ZILLA comes with the latest Pix Device Manager, version 3.0(4)

Brand New Components:
Cisco built Pix 520's from 1999 to 2001. That means that even with the most optimistic estimate, the power supply, the CPU cooling fan, the case fan and the floppy disk drive are at least 7 years old, and because most Pix firewalls run 24/7, there is most likely considerable wear and tear on each. That is why all Flantec PIX-ZILLA's come with brand new components, including very quiet Antec supplies, 92mm case fans and Copper/Aluminum heatsink fans, and Sony floppy drives.
Antec Power Supply   Antec 92mm Fans Antec CPU Cooler Sony Floppy Drive
Included Extras:
As a certified technician, I upgrade each Pix firewall with only reliable components. I personally test each unit thoroughly to ensure that it meets my satisfaction. This is why I offer a 5 year warranty on each Flantec PIX-ZILLA that I sell.

Each Pix has been reset to factory defaults, including the passwords being reset to <blank>. Included with each Flantec PIX-ZILLA is a CD containing the Cisco Pix software and VPN client software, a console cable, a power cord, rackmount ears, floppy drive cover, and 6 cat5e cables in various colors.

My Pix firewalls are very clean, but they do have some scratches on them. It is unfortunate, but because they predated most modern rackmount rail systems, the cases were often scratched by the previous owner during installation and removal from the rack unit. Of course, this is no way impacts the performance or reliability of the units themselves. I do not feel that I would be doing a service to my client's by attempting to touch-up or repaint the cases.

Since 1998, Flantec has been helping protect the networks & sensitive data of its accounting, legal and healthcare industry clients.

In addition to PayPal, Flantec accepts Visa, Mastercard, Discover, American Express and Company-Issued checks

Purchase with confidence. Please review my eBay feedback.