CT-5072S

ADSL2+ Ethernet Router

Description

CT-5072S with TR-069 compliant are a series of high performance ADSL2+ Ethernet Routers, providing one 10/100 Ethernet, and one ADSL line to access the Internet. Comtrends CT-5072S series also provide with TR-068 compliant panel and LED indicators making them more user-friendly. It incorporates LAN or Video on Demand over one ordinary telephone line at speeds of up to 24 Mbps. It has full routing capabilities to segment / route IP protocol and is able to support advanced security functions. The CT-5072S series can operate in either routing or bridging mode and also facilitate remote network management from home. In addition, it can protect all the networked computers with advanced security technologies, such as VPNs (Virtual Private Networks) with PPTP pass-through, L2TP pass-through, IPSec pass-through and firewall.
Features CT-5072S (Annex A) IP filtering SPI (Stateful Packet Inspection) DoS protection Static route/RIP/RIP v2 routing functions Dynamic IP assignment NAT/PAT IGMP proxy DHCP server/relay/client DNS proxy
Auto PVC configuration Up to 8 VCs Web-based management Supports remote administration, automatic
firmware upgrade and configuration
Configuration backup and restoration FTP/TFTP server Embedded SNMP agent IP/MAC address filtering
Supports TR-069/TR-098/TR-111 for remote management TR-068 compliant

Applications Diagram

Specifications

Hardware Interface

RJ-11 X 1 for ADSL, RJ-45 X 1 for LAN, Reset Button X 1, Power switch X 1

WAN Interface

ADSL standard G.992.5 (ADSL2+) G.992.3 (ADSL2) G.DMT Annex M ITU-T G.992.5, ITU-T G.992.3, ITU-T G.992.1, ANSI T1.413 Issue 2 Downstream : 24 Mbps Upstream : 1.3 Mbps Downstream : 12 Mbps Upstream : 1.3 Mbps Downstream : 8 Mbps Upstream : 832 Kbps

LAN Interface

Standard 10/100 BaseT MDI/MDX support IEEE 802.3, IEEE 802.3u Auto-sense Yes

ATM Attributes

RFC 2364 (PPPoA), RFC 2684 (RFC 1483) Bridge/Route; RFC 2516 (PPPoE); RFC 1577 (IPoA); Annex M Support PVCs 8 AAL type AAL5 ATM service class UBR/CBR/VBR ATM UNI support UNI3.1/4.0 OAM F4/F5 Yes

Management

SNMP, Telnet, Web-based management, Configuration backup and restoration Software upgrade via HTTP, TFTP server, or FTP server Supports TR-069/TR-098/TR-111 for Remote Management

Bridge Functions

Transparent bridging and learning VLAN support Spanning tree algorithm IGMP proxy IEEE 802.1d Yes Yes Yes

Routing Functions

Static route, RIP, and RIPv2, NAT/PAT, DHCP Server/DHCP Relay/DHCP Client, DNS Proxy, ARP

Security Functions

Authentication protocols PAP, CHAP, TCP/IP/Port filtering rules, Port triggering/Forwarding, Packet and MAC address filtering, Access control
L3 policy-based QoS, IP QoS, ToS

Application Passthrough

PPTP, L2TP, IPSec, VoIP, Yahoo messenger, ICQ, Real Player, NetMeeting, MSN, X-box, etc.

Power Supply

External power adapter 100 - 220 Vac 0 ~ 50 degrees Celsius 5 ~ 95% (non-condensing)

Environment Condition

Operating temperature Relative humidity

Dimensions

92 mm (W) x 34 mm (H) x 114 mm (D)
Kit weight (1* CT-5072S, 1*RJ11 cable, 1*RJ45 cable, 1*power adapter, 1*CD-ROM)

0.65 KG

Note: Specifications are subject to change without notice.

Taiwan: 3F-1, No.10, Lane 609, Chung Hsin Road Section 5, San Chung, Taipei, Taiwan 24159 Tel: 886-2-2999-8261 Fax: 886-2-2999-8497 China: NO.88 East QianJin Road,Kunshan City,JiangSu,China Tel: 86-512-57383156, 86-512-57383157, 86-512-57384515 Fax: 86-512-57383155
Spain: Edif. Amrica II C/Prcion,7 portal 3 bajo H 28023 Madrid, Spain Tel: 34-917990403 Fax: 34-913510999 UK: 566 Chiswick High Road Building 3, Chiswick Park Chiswick London, W4 5YA UK Tel: 44-0-8453701031 Fax: 44-0-8453701032 France: 87, Rue du Gouverneur Gnral Flix Ebou 92130 Issy-les-Moulineaux, France Tel: 33-1-70715700 Fax: 33-1-70715701 Czech Republic: TOKOVO Jankovcova 1518/2, 170 00, Prague 7, Czech Republic Tel: 420-266-782040 Fax: 420-266-782990
USA & Canada: 16 Goodyear, Suite 120, Irvine, CA 92618 Tel: 1-949-7539640 Fax: 1-949-7539020 Brazil: Al. Campinas, 977 - 7. Floor - Room 71 / 72 - Jardins Zip Code: 01404-001 - So Paulo - SP - Brazil Tel: 11 3052-2295 Fax: 11 3052-2295 Mexico Mariano Escobedo 396 Office 503 Colonia Anzures, Deleg. Miguel Hidalgo 11590 Distrito Federal Mxico Tel: +52 (55) 4623-1516
Global contact: sales@comtrend.com Website: www.comtrend.com

DS_CT5072S _R1.0_011608

8.1 SETTINGS.....59 8.1.1 Backup Settings....59 8.1.2 Update Settings....59 8.1.3 Restore Default....60 8.2 SYSTEM LOG....61 8.3 SNMP AGENT....62 8.4 TR-069 CLIENT.....63 8.5 INTERNET TIME.....64 8.6 ACCESS CONTROL....64 8.6.1 Services.....64 8.6.2 IP Addresses....65 8.6.3 Passwords....66 8.7 UPDATE SOFTWARE....67 8.8 SAVE AND REBOOT....67 APPENDIX A FIREWALL....68 APPENDIX B PIN ASSIGNMENTS....72 APPENDIX C SPECIFICATIONS...73 APPENDIX D SSH CLIENT...75

Chapter 1 Introduction

CT-5072S with TR-069 compliant are a series of high performance ADSL2+ Ethernet Routers, providing one 10/100 Ethernet, and one ADSL line to access the Internet. Comtrends CT-5072S series also provide with TR-068 compliant panels and LED indicators making them more user-friendly. It incorporates LAN or Video on Demand over one ordinary telephone line at speeds of up to 24 Mbps. It has full routing capabilities to segment / route IP protocol and is able to support advanced security functions. The CT-5072S series can operate in either routing or bridging mode and also facilitate remote network management from home. In addition, it can protect all the networked computers with advanced security technologies, such as VPNs (Virtual Private Networks) with PPTP pass-through, L2TP pass-through, IPSec pass-through and firewall.

1.1 Features

CT-5072S (Annex A) IP filtering SPI (Stateful Packet Inspection) DoS protection Static route and RIP v1/v2 routing Dynamic IP assignment NAT/PAT IGMP proxy DHCP server/relay/client DNS proxy Auto PVC configuration Up to 8 VCs Web-based management Configuration backup and restoration FTP/TFTP server Embedded SNMP agent IP/MAC address filtering TR-069/TR-098/TR-111 TR-068 compliant Remote administration, automatic firmware upgrade and configuration

1.2 Application

The following diagram depicts the application of the CT-5072S.

Chapter 2 Installation

2.1 Hardware Setup
Follow the instructions below to complete the hardware installation. The diagram below shows the back panel of the device.

Power port

Power button

Reset button

LINE Port Connect the ADSL line to this port with a RJ11 cable. LAN Port Use a RJ45 straight-through or crossover MDI/X cable to connect to the LAN. Power ON Press the power button to the OFF position (OUT). Connect the power adapter to the power port. Attach the power adapter to a wall outlet or other AC source. Press the power button to the ON position (IN). If the Power LED displays as expected then the device is ready for setup (see section 2.2 LED Indicators). Caution 1: If the device fails to power up, or it malfunctions, first verify that the power cords are connected securely. Then power it on again. If the problem persists, contact technical support. Caution 2: Before servicing or disassembling this equipment, disconnect all power cords and telephone lines from their outlets.

3.2 IP Configuration

STATIC IP MODE To access router settings, your PC must have a static IP address within the 192.168.1.x subnet. Follow the steps below to configure your PC IP address to use subnet 192.168.1.x. The following steps assume you are running Windows XP. STEP 1: From the Network Connections window, open Local Area Connection (You may also access this screen by double-clicking the Local Area Connection icon on your taskbar). Click the Properties button. STEP 2: Select Internet Protocol (TCP/IP) and click the Properties button. The screen should now display as below. Change the IP address to the domain of 192.168.1.x (1<x<255) with subnet mask of 255.255.255.0.
STEP 3: Click OK to submit the settings.
DHCP MODE Set your PC to DHCP mode by selecting Obtain an IP address automatically in the Internet Protocol Properties dialog box, as shown below.

3.3 Login Procedure

Perform the following steps to login to the web user interface. NOTE: The default settings can be found in section 3.1.
STEP 1: Start the Internet browser and enter the default IP address for the device in the Web address field. For example, if the default IP address is 192.168.1.1, type http://192.168.1.1. NOTE: For local administration (i.e. LAN access), the PC running the browser must be attached to the Ethernet, and not necessarily to the device. For remote access (i.e. WAN), use the IP address shown on the Device Info WAN screen and login with remote username and password.
STEP 2: A dialog box will appear, such as the one below. Enter a default username and password, as defined in section 3.1 Default Settings. 9
Click OK to continue. NOTE: The login password can be changed later (section 8.6.3 Passwords)
STEP 3: After successfully logging in for the first time, you will reach this screen.
NOTE1: If a PVC connection already exists then this Quick Setup screen will be bypassed and the Device Info Summary screen will display instead. NOTE2: The selections available on the main menu (onscreen at left) are based upon the configured connection and user account privileges.

Chapter 4 Quick Setup

The function allows the user to configure the ADSL router for DSL connectivity and Internet access. It guides the user though the WAN network setup first and then the LAN interface setup. The user can either manually customize the router or follow the auto quick setup procedure. The following configuration considerations apply: The WAN network operating mode operation depends on the service providers configuration on the Central Office side and Broadband Access Server for the PVC If the service provider provides PPPoE service, then the connection selection depends on whether the LAN-side device (typically a PC) is running a PPPoE client or whether the CT-5072S is to run the PPPoE client. The CT-5072S can support both cases simultaneously. If some or none of the LAN-side devices are not running a PPPoE client, then select PPPoE. If all LAN-side devices are running PPPoE clients, then select Bridge In PPPoE mode, CT-5072S also supports pass-through PPPoE sessions from the LAN side while simultaneously running a PPPoE client from non-PPPoE LAN devices. NAT and firewall are always enabled when PPPoE mode is selected, but they can be enabled or disabled by the user when MER or IPoA is selected, NAT and firewall are always disabled when Bridge mode is selected. Depending on the network-operating mode, and NAT and firewall status, the main menu will display or hide the NAT/Firewall menu. For instance, if the default network-operating mode is Bridge, the main menu will not show the NAT and Firewall menu. Up to 8 PVC profiles can be configured and saved in the flash memory. To activate a particular PVC profile, you must navigate through all the setup screens until the last summary screen, and click Save/Reboot.

PPP IP Extension The PPP IP Extension is a special feature deployed by some service providers. Unless your service provider specifically requires this setup, do not select it. PPP IP Extension does the following: Allows only one PC on the LAN The public IP address assigned by the remote side using the PPP/IPCP protocol is actually not used on the WAN PPP interface. Instead, it is forwarded to the PC LAN interface through DHCP. Only one PC on the LAN can be connected to the remote, since the DHCP server within the device has only a single IP address to assign to a LAN device. NAT and firewall are disabled when this option is selected. The device becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. 15
The device extends the IP subnet at the remote service provider to the LAN PC. i.e. the PC becomes a host belonging to the same IP subnet. The device bridges the IP packets between WAN and LAN ports, unless the packet is addressed to the devices LAN IP address.
Use Static IP Address Unless your service provider specially requires this setup, do not select it. If selected, enter your static IP address in the IP Address field. Enable PPP Debug Mode When this option is selected, the system will put more PPP connection information into the system log. This is for debugging errors and not for normal usage. STEP 5: Click Next to display the following screen.
Enable IGMP Multicast Tick the checkbox to enable IGMP multicast (proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers. Enable WAN Service Tick the checkbox to enable the WAN service. Service Name: This is the WAN Service label. STEP 6: Upon completion, click Next. The following screen appears.
This screen allows for the configuration of the CT-5072S LAN interface IP address, subnet mask and DHCP server. To auto-assign IP addresses, DNS server and default gateway to other LAN devices, select the Enable DHCP server radio box. You must also enter the start and end IP address and DHCP leased time. To configure a secondary IP address for the LAN port, click the checkbox shown.
STEP 7: Click Next to display the configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.
After clicking Save/Reboot, the router will save the configuration to the flash memory and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info screen automatically. The CT-5072S is ready for operation when the front panel LED indicators display as described in section 2.2 LED Indicators.

Enable IGMP Multicast Tick the checkbox to enable IGMP multicast (proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers. Enable WAN Service Tick the checkbox to enable the WAN service. Service Name is user-defined. STEP 6: Upon completion, click Next. The following screen appears.
This screen allows for the configuration of the CT-5072S LAN interface IP address, subnet mask and DHCP server. To auto-assign IP addresses, DNS server and default gateway to LAN devices, select the Enable DHCP server radio box. You must also enter the start and end IP address and DHCP leased time. Select Enable DHCP Server Relay (if required), and enter the DHCP Server IP Address. This allows the router to relay the DHCP packets to the remote DHCP server. The remote DHCP server will provide the IP address. NOTE: The Enable DHCP Server Relay option will not display if NAT is enabled. shown.

Bridging

and enter a service name.
STEP 4: To enable bridge service, tick the checkbox
STEP 5: Click Next to display the following screen.
Enter the IP address and subnet mask for the LAN interface. These settings are used to manage the CT-5072S. In bridge mode, there is no WAN IP address and therefore no remote access to the router for technical support or other purposes. STEP 6: Click Next to display the configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.
Chapter 5 Device Information
The web user interface is divided into two windowpanes, the main menu (at left) and the display screen (on the right). The main menu has the several options and selecting each of these options opens a submenu with more selections. NOTE: The menu items shown are based upon the configured connection and user account privileges. For example, in the Advanced Setup menu, if NAT and Firewall are enabled, the main menu will display the NAT and Security submenus. If either is disabled, their corresponding menu(s) will also be disabled.
Device Info is the first selection on the main menu so it will be discussed first. Subsequent chapters will introduce the other main menu options in sequence.
The Device Info Summary screen (shown above) is the default startup screen. It provides summary information regarding hardware, software, data transmission (i.e. Line Rate), and the IP configuration of the device.

5.1 WAN

Select WAN from the Device Info submenu to display the configured PVC(s).
Heading VPI/VCI Con. ID Category Service Interface Protocol IGMP QoS State Status IP Address
Description ATM VPI (0-255) / VCI (32-65535) WAN connection ID number ATM service category Name of the WAN connection Name of the interface for WAN Shows the connection type Shows Internet Group Management Protocol (IGMP) status Shows Quality of Service (QoS) status Shows the connection state of the WAN connection Lists the status of DSL link Shows WAN IP address

5.2 Statistics

This selection provides LAN, WAN, ATM and ADSL statistics. NOTE: These screens are updated every 15 seconds.

LAN Statistics

This screen shows data traffic statistics for each LAN interface.
Heading Interface Received/Transmitted:

Bytes Pkts Errs Drops

Description LAN interface(s) Number of Bytes Number of Packets Number of packets with errors Number of dropped packets

WAN Statistics

Heading Service VPI/VCI Protocol Interface Received/Transmitted
- Bytes - Pkts - Errs - Drops
Description WAN service label ATM Virtual Path/Channel Identifiers Connection type (e.g. PPPoE, IPoA, Bridge) Shows connection interfaces Number of Bytes Number of Packets Number of packets with errors Number of dropped packets

ATM statistics

The following figure shows the ATM statistics screen.
ATM Interface Statistics Heading In Octets Out Octets In Errors In Unknown Description Number of received octets over the interface Number of transmitted octets over the interface Number of cells dropped due to uncorrectable HEC errors Number of received cells discarded during cell header validation, including cells with unrecognized VPI/VCI values, and cells with invalid cell header patterns. If cells with undefined PTI values are discarded, they are also counted here. Number of cells received with an ATM Cell Header HEC error Number of cells received with an unregistered VCC address. Number of cells received on a port that has not been enabled. Number of cells received with an ATM header Payload Type Indicator (PTI) error Number of idle cells received Number of cells received with an illegal circuit type Number of OAM and RM cells received with CRC errors Number of cells received with a non-zero GFC.
In Hec Errors In Invalid Vpi Vci Errors In Port Not Enable Errors In PTI Errors In Idle Cells In Circuit Type Errors In OAM RM CRC Errors In GFC Errors
AAL5 Interface Statistics Heading In Octets Out Octets In Ucast Pkts Out Ucast Pkts Description Number of received AAL5/AAL0 CPCS PDU octets Number of received AAL5/AAL0 CPCS PDU octets transmitted Number of received AAL5/AAL0 CPCS PDUs passed to a higher-layer for transmission Number of received AAL5/AAL0 CPCS PDUs received from a higher layer for transmission 29

In Errors Out Errors In Discards Out Discards
Number of received AAL5/AAL0 CPCS PDUs received that contain an error. These errors include CRC-32 errors. Number of received AAL5/AAL0 CPCS PDUs that could not be transmitted due to errors. Number of received AAL5/AAL0 CPCS PDUs discarded due to an input buffer overflow condition. This field is not currently used
AAL5 VCC Statistics Heading VPI/VCI CRC Errors SAR TimeOuts Description ATM Virtual Path/Channel Identifiers Number of PDUs received with CRC-32 errors Number of partially re-assembled PDUs that were discarded because they were not fully re-assembled within the required period of time. If the re-assembly time is not supported, then this object contains a zero value. Number of PDUs discarded because the corresponding SDU was too large Number of PDUs discarded because the PDU length was less than the size of the AAL5 trailer Number of PDUs discarded because the PDU length did not match the length in the AAL5 trailer
Oversized SDUs Short Packet Errors Length Errors

ADSL Statistics

The following figure shows the ADSL Statistics screen in G.Dmt mode.
Click the Reset Statistics button to refresh this screen.
Field Mode Type Line Coding Status Link Power State SNR Margin (dB) Attenuation (dB) Output Power (dBm) Attainable Rate (Kbps) Rate (Kbps)
Description G.Dmt, G.lite, T1.413, ADSL2, ADSL2+ Channel type Interleave or Fast Trellis On/Off Lists the status of the DSL link Link output power state. Signal to Noise Ratio (SNR) margin Estimate of average loop attenuation in the downstream direction. Total upstream output power The sync rate you would obtain. Current sync rate.
In G.DMT mode, the following section is inserted. K Number of bytes in DMT frame R Number of check bytes in RS code word S RS code word size in DMT frame D The interleaver depth Delay The delay in milliseconds (msec) In ADSL2+ mode, the following section is inserted. MSGc Number of bytes in overhead channel message B Number of bytes in Mux Data Frame M Number of Mux Data Frames in FEC Data Frame T Max Data Frames over sync bytes R Number of check bytes in FEC Data Frame S Ratio of FEC over PMD Data Frame length L Number of bits in PMD Data Frame D The interleaver depth Delay The delay in milliseconds (msec) Super Frames Super Frame Errors RS Words RS Correctable Errors RS Uncorrectable Errors HEC Errors OCD Errors LCD Errors Total Cells Data Cells Bit Errors Total ES Total SES Total UAS Total number of super frames Number of super frames received with errors Total number of Reed-Solomon code errors Total Number of RS with correctable errors Total Number of RS words with uncorrectable errors Total Total Total Total Total Total Number of Header Error Checksum errors Number of out-of-cell Delineation errors number of Loss of Cell Delineation number of ATM cells (including idle + data cells) number of ATM data cells number of bit errors

Heading VPI/VCI Con. ID Category Service Interface Protocol Igmp Nat QoS VlanId State Remove Edit
Description ATM VPI (0-255) / VCI (32-65535) WAN connection ID number ATM service category Name of the WAN connection Name of the interface for WAN Shows the connection type Shows Internet Group Management Protocol (IGMP) status Shows Network Address Translation (NAT) status Shows Quality of Service (QoS) status VLAN ID is used for VLAN Tagging (IEEE 802.1Q) Shows the connection state of the WAN connection Used to select connections for removal Used to edit connections

6.2 LAN

From this screen, LAN interface settings can be configured.
NAT is enabled so UPnP is shown above (see underlined notes below).
Consult the field descriptions below for more details. IP Address: Enter the IP address for the LAN port. Subnet Mask: Enter the subnet mask for the LAN port. Enable UPnP: Tick the box to enable Universal Plug and Play. This option is hidden when NAT disabled or if no PVC exists
Enable IGMP Snooping: This function does not apply to this model. DHCP Server: To enable DHCP, select Enable DHCP server and enter starting and ending IP addresses and the leased time. This setting configures the router to automatically assign IP, default gateway and DNS server addresses to every PC on your LAN.
Enable with checkbox and enter DHCP Server IP address. This allows the Router to relay the DHCP packets to the remote DHCP server. The remote DHCP server will provide the IP address. This option is hidden if NAT is enabled To configure a secondary IP address, tick the checkbox outlined (in RED) below.

DHCP Server Relay:

IP Address: Enter the secondary IP address for the LAN port. Subnet Mask: Enter the secondary subnet mask for the LAN port. NOTE: The Save button simply saves changes, while the Save/Reboot button both saves and reboots the device to make any changes effective.

6.3 NAT

To display this option, NAT must be enabled in at least one PVC shown on the Advanced Setup - WAN screen. (NAT is not an available option in Bridge mode)

Virtual Servers

Virtual Servers allow you to direct incoming traffic from the WAN side (identified by Protocol and External port) to the Internal server with private IP addresses on the LAN side. The Internal port is required only if the external port needs to be converted to a different port number used by the server on the LAN side. A maximum of 32 entries can be configured.
To add a Virtual Server, click Add. The following will be displayed.
Consult the table below for field and header descriptions. Field/Header Select a Service Or Custom Server Server IP Address External Port Start Description User should select the service from the list. Or User can enter the name of their choice. Enter the IP address for the server. Enter the starting external port number (when you select Custom Server). When a service is selected, the port ranges are automatically configured. Enter the ending external port number (when you select Custom Server). When a service is selected, the port ranges are automatically configured. TCP, TCP/UDP, or UDP. Enter the internal port starting number (when you select Custom Server). When a service is selected the port ranges are automatically configured Enter the internal port ending number (when you select Custom Server). When a service is selected, the port ranges are automatically configured.

Session Initiation Protocol (SIP - RFC3261) Application Layer Gateway (ALG) is the protocol of choice for most VoIP (Voice over IP) phones to initiate communication. If the user has an IP phone (SIP) or VoIP gateway (SIP) situated behind the router, the SIP ALG can help VoIP packets pass through when NAT is enabled. Tick the SIP Enabled checkbox to enable SIP ALG and click Save/Apply.
This ALG is only valid for SIP protocol running on UDP port 5060.

6.4 Security

To display this function, you must enable the firewall feature in WAN Setup. For detailed descriptions, with examples, please consult Appendix A Firewall.

IP Filtering

This screen sets filter rules that limit IP traffic (Outgoing/Incoming). Multiple filter rules can be set and each applies at least one limiting condition. For individual IP packets to pass the filter all conditions must be fulfilled. NOTE: This function is not available when in bridge mode. Instead of IP Filtering, MAC Filtering (pg. 44) performs a similar function.
OUTGOING IP FILTER By default, all outgoing IP traffic is allowed, but IP traffic can be blocked with filters.
To add a filter (to block some outgoing IP traffic), click the Add button. On the following screen, enter your filter criteria and then click Save/Apply.
Consult the table below for field descriptions. Field Filter Name Protocol Source IP address Source Subnet Mask Source Port (port or port:port) Destination IP address Destination Subnet Mask Destination Port (port or port:port) Description The filter rule label TCP, TCP/UDP, UDP, or ICMP. Enter source IP address. Enter source subnet mask. Enter source port number or range. Enter destination IP address. Enter destination subnet mask. Enter destination port number or range.
INCOMING IP FILTER By default, all incoming IP traffic is blocked, but IP traffic can be allowed with filters.
To add a filter (to allow incoming IP traffic), click the Add button. On the following screen, enter your filter criteria and then click Save/Apply.
For detailed field descriptions, please reference the previous table. Under WAN Interfaces, select the PVCs (All routing modes with firewall ON) where the filter rule will apply. You may select all PVCs or just a subset. Filter rules are arranged by PVC as shown under the VPI/VCI heading on the previous screen.

MAC Filtering

This option is only available in bridge mode. Other modes (i.e. PPPoE/A, IPoA, MER) use IP Filtering (pg. 42) to perform a similar function.
Each network device has a unique 48-bit MAC address. This can be used to filter (block or forward) packets based on the originating device. MAC filtering policy and rules for the CT-5072S can be set according to the following procedure. The MAC Filtering Global Policy is defined as follows. FORWARDED means that all MAC layer frames will be FORWARDED except those matching the MAC filter rules. BLOCKED means that all MAC layer frames will be BLOCKED except those matching the MAC filter rules. The default MAC Filtering Global policy is FORWARDED. It can be changed by clicking the Change Policy button.

6.7 DNS

6.7.1 DNS Server
If the Enable Automatic Assigned DNS checkbox is selected, this router will accept the first received DNS assignment from one of the DHCP enabled PVC(s). If the checkbox is not selected, enter the primary and optional secondary DNS server IP addresses. Click Save to save the new configuration.
You must reboot the router to make the new configuration effective.

Dynamic DNS

The Dynamic DNS service allows you to map a dynamic IP address to a static hostname in any of many domains, allowing the CT-5072S to be more easily accessed from various locations on the Internet.
To add a dynamic DNS service, click Add.
The following screen will display.
Consult the table below for field descriptions. Field D-DNS provider Hostname Interface Username Password Description Select a dynamic DNS provider from the list Enter the name for the dynamic DNS server Select the interface (PVC) from the list Enter the username for the dynamic DNS server Enter the password for the dynamic DNS server

6.8 DSL

The DSL Settings screen allows for the selection of DSL modulation modes. For optimum performance, the modes selected should match those of your ISP.
DSL Mode G.Dmt G.lite T1.413 ADSL2 AnnexL ADSL2+ AnnexM Options Inner/Outer Pair Bitswap Enable SRA Enable
Data Transmission Rate - Mbit/s (Megabits per second) Downstream: 12 Mbit/s Upstream: 1.3 Mbit/s Downstream: 4 Mbit/s Upstream: 0.5 Mbit/s Downstream: 8 Mbit/s Upstream: 1.0 Mbit/s Downstream: 12 Mbit/s Upstream: 1.0 Mbit/s Supports longer loops but with reduced transmission rates Downstream: 24 Mbit/s Upstream: 1.0 Mbit/s Downstream: 24 Mbit/s Upstream: 3.5 Mbit/s Description Select the inner or outer pins of the twisted pair (RJ11 cable) Enables adaptive handshaking functionality Enables Seamless Rate Adaptation (SRA)

6.9 Certificate

A certificate is a public key, attached with its owners information (company name, server name, personal real name, contact e-mail, postal address, etc) and digital signatures. There will be one or more digital signatures attached to the certificate, indicating that these entities have verified that this certificate is valid.
CREATE CERTIFICATE REQUEST Click Create Certificate Request to generate a certificate-signing request. The certificate-signing request can be submitted to the vendor/ISP/ITSP to apply for a certificate. Some information must be included in the certificate-signing request. Your vendor/ISP/ITSP will ask you to provide the information they require and to provide the information in the format they regulate. Enter the required information and click Apply to generate a private key and a certificate-signing request.

detected the Ethernet not detect the Ethernet detected a DSL signal not detect a DSL signal

Chapter 8 Management

The Management menu has the following maintenance functions and processes: 8.1 Settings 8.2 System Log 8.3 SNMP Agent 8.4 TR-069 Client 8.5 Internet Time 8.6 Access Control 8.7 Update Software 8.8 Save and Reboot

8.1 Settings

This includes Backup Settings, Update Settings, and Restore Default screens.

Backup Settings

To save the current configuration to a file on your PC, click Backup Settings. You will be prompted for a location of the backup file. This file can later be used to recover settings using the Update Settings function described below.

Update Settings

This option recovers configuration files previously saved using Backup Settings. Enter the file name (including folder path) in the Settings File Name box or press Browse to search for the file. Click Update Settings to recover settings.

Restore Default

Click Restore Default Settings to restore the CT-5072S to factory default settings.
After Restore Default Settings is clicked, the following screen appears.
Close the browser and wait for 2 minutes before reopening it. It may also be necessary, to reconfigure your PC IP configuration to match your new settings. NOTE: This entry has the same effect as the Reset button. The CT-5072S board hardware and the boot loader support the reset to default. If the Reset button is continuously pressed for more than 5 seconds, the boot loader will erase the configuration data saved in flash memory.

8.2 System Log

This function allows a system log to be kept and viewed upon request. Follow the steps below to configure, enable, and view the system log. Step 1: Click Configure System Log as shown below.
Step 2: Select desired options and click Save/Apply.
Consult the table below for detailed descriptions of each system log option. Option Description Log Indicates whether the system is currently recording events. The user can enable or disable event logging. By default, it is disabled. To enable it, tick Enable and then Apply button. Log Allows you to configure the event level and filter out unwanted events level below this level. The events ranging from the highest critical level Emergency down to this configured level will be recorded to the log buffer on the CT-5072S SDRAM. When the log buffer is full, the newer event will wrap up to the top of the log buffer and overwrite the old event. 61

This option allows for firmware upgrades from a locally stored file.
Step 1: Obtain an updated software image file from your ISP. Step 2: Enter the path and filename of the firmware image file in the Software File Name field or click the Browse button to locate the image file. Step 3: Click the Update Software button once to upload and install the file. NOTE: The update process will take about 2 minutes to complete. The device will reboot and the browser window will refresh to the default screen upon successful installation. It is recommended that you compare the Software Version at the top of the Device Info Summary screen with the firmware version installed, to confirm the installation was successful.

8.8 Save and Reboot

To save the current configuration and reboot the router, click Save/Reboot.
You may need to close the browser window and wait for 2 minutes before reopening it. It may also be necessary, to reset your PC IP configuration. 67

Appendix A Firewall

STATEFUL PACKET INSPECTION Refers to an architecture, where the firewall keeps track of packets on each connection traversing all its interfaces and makes sure they are valid. This is in contrast to static packet filtering which only examines a packet based on the information in the packet header. DENIAL OF SERVICE ATTACK Is an incident in which a user or organization is deprived of the services of a resource they would normally expect to have. Various DoS attacks the device can withstand are ARP Attack, Ping Attack, Ping of Death, Land, SYN Attack, Smurf Attack, and Tear Drop. TCP/IP/PORT/INTERFACE FILTER These rules help in the filtering of traffic at the Network layer (i.e. Layer 3). When a Routing interface is created, Enable Firewall must be checked. Navigate to Advanced Setup Security IP Filtering. OUTGOING IP FILTER Helps in setting rules to DROP packets from the LAN interface. By default, if the Firewall is Enabled, all IP traffic from the LAN is allowed. By setting up one or more filters, specific packet types coming from the LAN can be dropped. Filter Name: User defined Filter Name. Protocol: TCP/UDP, TCP, UDP, or ICMP Source IP Address/Source Subnet Mask: Packets with the specific "Source IP Address/Source Subnet Mask" combination will be dropped. Source Port: This can take on either a single port number or a range of port numbers. Packets having a source port equal to this value or falling within the range of port numbers (portX : portY) will be dropped. Destination IP Address/Destination Subnet Mask: Packets with the specific "Destination IP Address/Destination Subnet Mask" combination will be dropped. Destination Port: This can take on either a single port number or a range of port numbers. Packets having a destination port equal to this value or falling within the range of port numbers (portX : portY) will be dropped. Example 1: Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Subnet Mask Dest. Port : : : : : : : : Out_Filter1 TCP 192.168.1.45 255.255.255.NA NA NA

Certifications.. FCC Part 15 class B, CE NOTE: Specifications are subject to change without notice

Appendix D SSH Client

Unlike Microsoft Windows, Linux OS has a ssh client included. For Windows users, there is a public domain one called putty that can be downloaded from here: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html To access the ssh client you must first enable SSH access for the LAN or WAN from the Management Access Control Services menu in the web user interface. To access the router using the Linux ssh client For LAN access, type: ssh -l root 192.168.1.1 For WAN access, type: ssh -l support WAN IP address To access the router using the Windows putty ssh client For LAN access, type: putty -ssh -l root 192.168.1.1 For WAN access, type: putty -ssh -l support WAN IP address NOTE: The WAN IP address can be found on the Device Info WAN screen