We are about to replace the Dell webserver with an IBM box runningbut we will till have the Dell database server running Windows Did you have a similar setup or was it just one Dell server? Every little while, connection to A would fail until we reset switch. Replaced switch three times. Other devices would fail unrelated to the server.
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Therefore, we recommend you block all telnet access to the switch by disabling the telnet server. However, if you persist with telnet, you should make a whitelist of the hosts that are permitted to telnet to the switch. This does not make telnet secure, but it does reduce the associated risks. Configuration 1. ATTs x Series 3. Page 14 Identifying the user Identifying the user This section describes methods for authorising and tracking users and preventing them from changing their identity on the network.
IP spoofing and tracking Unknown users who attempt to change IP address—to circumvent billing or to hide their identity—can be a problem for administrators. It is a helpful mechanism, particularly when there is a chance of duplicate addresses.
Products All switches listed on page 2 Software Versions 2. These How To Notes are available from www. This enhances your ability to track users. These features force all traffic in a network to go via an access router. This feature creates secure tunnels through an insecure network. Page 21 Protecting the user Configuration of edge switches 1. Create the VLANs, specifying that they are private.
Make a different VLAN for each type of traffic that you want to control differently. Add the uplink and private ports to the VLANs as tagged ports. Configure any other requirements, such as a management IP address. Configuration of access router 1.
Create the VLANs. Add the ports to the VLANs as tagged ports. Enable IP. Page 24 Protecting the user Configuration of edge switches 1. Create a VLAN for each type of service for example, voice, video, and data. With software versions and later, you can use non-private VLANs. However, we recommend you use private VLANs for maximum security. Edge switch 1 Edge switch 1 is directly connected to the access router.
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