What is dial back in network security?
Dial back is one method that can be inexpensively used to enhance security when it is supported by a remote access product. Routers allow the network manager to filter packets. This capability can be used to ensure that particular types of packets are not allowed from remote access server ports to the main network.
What are the different types of dial-up remote access?
There are several remote access applications that are well-suited for dial-up remote access products: LAN-to-LAN connectivity, Internet/intranet access, remote user access and modem pooling. A dial-up connection between two networks is termed as an LAN-to-LAN connection.
What is a managed Industrial Ethernet switch?
These technologies help provide enhanced access control, threat detection, and application visibility in your industrial control system (ICS). Our Stratix® 5800 managed industrial Ethernet switch offers gigabit performance in a flexible package.
What is the best option for a remote access network?
When considering a remote access network, the network manager has several choices that offer trade-offs in cost, flexibility and data throughput. Dial-up remote access is a good option when flexibility and low cost are more important than speed.
What is an ET-5MS-MDM switch?
The ET-5MS-MDM Remote Access Switch integrates an industrial telephone modem with an industrial 5-port Managed Ethernet Switch, ena bling integrators and plant engineers to dial into a plant from remote locations.
How many GB is Abaco 6U SBC?
Abaco's 6U SBC features the Intel Xeon E six core CPU with 64GB DDR4 with ECC and up to 256 GB SSD and provides a dual 40 GbE data plane with RDMA, plus dual 10GbE ports on the control plane.
What is dial up remote access?
Dial-up remote access requires only plain old telephone service (POTS) or ISDN lines, and allows users to make connections to many resources, from corporate headquarters, to bulletin board services, to the Internet/Intranet. Dial-up remote access also allows travelling or telecommuting remote users to connect to their network as if they were located on-site.
What is remote access server?
A remote access server that can function as a router can be useful as an intermediate point between a network and an ISP to act as a firewall, particularly if that device can support multiple filtering options. By applying various filters to packets arriving on a dial-up line, a network manager can ensure that no unsolicited or unregulated packet traffic can enter the network via those lines.
What is remote node access?
Remote node network access allows remote users to connect to a network using a modem. Remote node users are typically mobile or telecommuter users who run a remote client software package on their PC or workstation giving them network access through a dial-up server. Remote node access to the network has become easier because of the TCP/IP or IPX support that's been built into Windows95 and other operating systems. Most of the current demand for such services involves either IP (Unix) or IPX (Novell NetWare) protocols.
Why is remote control important?
Remote control is useful when a user needs a lot of processing power or number crunching capability, because only the serial information sent to the keyboard, mouse and display need pass over the dial-up link. The drawback of this approach is that the user can only view the information and cannot transfer files or obtain data to be processed on their remote system. Remote control is more frequently used with the IPX (NetWare) protocol; IP users can use terminal servers to achieve the same result when a multi-user host is available.
What is bandwidth on demand?
More advanced functions include an automatic time-out for connections if the packets being transmitted are not data (i.e., they are keep alive signals generated by the NOS), policy-based filtering of packets from particular nodes or particular protocol types and bandwidth on demand in which the remote access server brings up an additional connection to a remote network to increase available bandwidth to that site. With bandwidth-on-demand, the network manager specifies the desired throughput threshold for the extra line to be added or to be taken down and this feature is enabled when the threshold is reached and a second line is available.
What is remote control?
Remote control is achieved when the remote user dials into the network and takes control of a PC residing on the network. The remote user's keyboard then becomes the equivalent of the slave PC's keyboard, allowing the remote user to act as if they were physically working on the slave PC.
What is routing in network?
When a connection is made to another network, routing is the key to this type of functionality ( when a user on the network requests connection to a resource available only on another network, the remote access device recognises the need to dial another network and then automatically dials up the appropriate remote site according to a stored profile. Once the connection has been established, the remote access device will monitor the connection according to the parameters established by the network manager.
What is NAT in router?
A Network Address Translator (NAT) is an IP router defined in RFC 1631 that can translate IP addresses and TCP/UDP port numbers of packets as they are being forwarded. Consider a small business network with multiple computers connecting to the Internet. A small business would normally have to obtain an Internet Service Provider (ISP)–allocated public IP address for each computer on their network. With NAT, however, the small business can use private addressing (as described in RFC 1597) and have the NAT map its private addresses to a single or to multiple public IP addresses as allocated by its ISP.
How to calculate dB loss on phone line?
Calculate dB loss on the phone line by subtracting from -10dB. In the example above, the line has 15.6 dB loss, problems will begin at about 40-45 dB loss.
What is the default time for a modem?
Default: 95, (.095 seconds) phone company standard Controls the S11 register of the modem, controls the length of time that the tones are transmitted by the modem when dialing an outgoing call.
How long should a modem wait to disconnect?
Default: 14 (tenths of a second or 1.4 seconds) Should be set to at least 50 for cellular connections Amount of time the modem must wait after losing carrier from the remote modem before disconnecting.
When is the 9300-RADES read N/A?
This will read N/A when connected, unless the phone line has caller ID enabled and the user has not dialed in anonymously. The value will always be N/A when no one is connected. Displays the phone number of the caller that is dialed into the 9300-RADES
Does the 9300-RADES have a bootp client?
The modem comes with Bootp client on by default. To assign and address simply put the RADES on a network with a Bootp Server, and cycle power to the 9300-RADES. It will attempt to get an IP address several times from the server, before timing out and sticking with 192.168.1.1
Does X4 modem ignore dial tone?
Default: Yes, X4, Detects busy tone, dial tone, and connect xxxx messages This is used to configure the modem to ignore Dial tone. Changing the value to No tells the modem to ignore Dial tone.