CIS is the worldwide industry leader in secure and custom communications technologies including TEMPEST, TSG, and a broad portfolio of Tactical and Custom products that meet the most demanding requirements for government and commercial security-conscious customers.. Select a product family below to find the products that best suits your needs. Please contact us here with any additional questions!

TEMPEST Cisco SG300 10-Port Switch

TEMPEST Cisco SG300 10-Port SFP Switch

Manufacturer: CIS Secure Computing


  • NSTISSAM 1-92 Level I
  • NATO SDIP-27 Level A (equivalent)
  • CID09/15A (equivalent)

Key Features

  • Jumbo Frame Size Up to 9KB
  • SFP Port: 10 x 100/1000 Base-X Dual Speed
  • Provides 4 priority queues per port

The TEMPEST Cisco SG300 is a modified version of the commercially available Cisco SG300 network switch.  The switch can connect up to ten computers, printers, or other network devices using 100Mb or 1Gb LC Fiber SFPs. It is ideal for small workgroup and tactical applications.

Jumbo Frames up to 9K (9216) bytes

Support for up to 4096 VLANs simultaneously
Port-based and 802.1Q tag-base VLANs
MAC-based VLAN
Management VLAN
Private VLAN Edge (PVE)
Guest VLAN
Unauthenticated VLAN
Dynamic VLAN assignment via Radius server along 802.1x client authentication

Quality of Service (QoS)
Support IEEE 802.1p Class of Service
Support QoS (QCL/QCE) for traffic control
Provides 4 priority quenes per port
Port base, Tag base, and Type of Service Priority

Login security: IEEE802.1X, IP-MAC-PORT binding for security, TACACS+, SSH/SSL

Spanning Tree
IEEE 802.1d Spanning Tree Support, IEEE 802.1w Rapid Spanning Tree Support, IEEE 802.1s Multiple Spanning Tree Support

IGMP Snooping V1, V2, V3

Firmware and Configuration
Web browser upgrade (HTTP/HTTPS) and TFTP upgrade over SCP running over SSH
Upgrade can be initiated through console port as well
Dual images for resilient firmware upgrades

IPv6 host mode
IPv6 over Ethernet Dual IPv4/IPv6 Stack
IPv6 neighbor and route discovery (ND)
IPv6 stateless address auto-negotiation
Path maximum transmission unit (MTU) discovery
Duplicate address detection (DAD) ICMP version 6
IPv6 over IPv4 network with Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) support

Web/SSL, Telnet server/SSH, ping, traceroute, Simple Network Time Protocol (SNTP), Trivial File Transfer Protocol (TFTP), SNMP, RADIUS, syslog, DNS Client, Telnet Client, DHCP Client, DHCP Autoconfig, IPv6 DHCP Relay, TACACS

IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE 802.3ad LACP, IEEE, 802.3z Gigabit Ethernet, IEEE 802.3x Flow Control, IEEE 802.1D (STP, GARP, GVRP), IEEE 802.1Q/p VLAN, IEEE 802.1w RSTP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE 802.3af, IEEE 802.3at, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC 813, RFC 879, RFC 896, RFC 826, RFC 854, RFC 855, RFC 856, RFC 858, RFC 894, RFC 919, RFC 922, RFC 920, RFC 950, RFC 1042, RFC 1071, RFC 1123, RFC 1141, RFC 1155, RFC 1157, RFC 1350, RFC 1533, RFC 1541, RFC 1624, RFC 1700, RFC 1867, RFC 2030, RFC 2616, RFC 2131, RFC 2132, RFC 3164, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 2576, RFC 4330, RFC 1213, RFC 1215, RFC 1286, RFC 1442, RFC 1451, RFC 1493, RFC 1573, RFC 1643, RFC 1757, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2233, RFC 2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863, RFC 1157, RFC 1493, RFC 1215, RFC 3416

System, Link/Act, PoE, Speed, LED power saving option


SFP Port: 10 x 100/1000Base-X Dual Speed

Dimensions (H x W x D)

1.45 “ x 11.0” x 6.7”


Approx. 5 lbs.

32 to 104° F (0 to 40° C)
-4 to 158° F (-20 to 70° C)

10 to 90%, noncondensing
10 to 90%, noncondensing

100-240VAC, 50-60Hz

Standard 1 year parts and labor
Optional 3 year parts and labor

CIS Secure solutions are available directly from CIS, our authorized resellers, and government contracts including GSA, ITES-3H, NETCENTS-2, and SEWP V.