Cisco 7604 Configuration Guide - Page 526
Allowing HTTPS Access for ASDM, Allowing a VPN Management Connection
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Allowing HTTPS Access for ASDM Chapter 23 Configuring Management Access The display of the dot does not affect the functionality of SSH. The dot appears at the console when generating a server key or decrypting a message using private keys during SSH key exchange before user authentication occurs. These tasks can take up to two minutes or longer. The dot is a progress indicator that verifies that the FWSM is busy and has not hung. Allowing HTTPS Access for ASDM To use ASDM, you need to enable the HTTPS server, and allow HTTPS connections to the FWSM. These tasks are completed if you use the setup command. This section describes how to manually configure ASDM access. The FWSM allows a maximum of 5 concurrent ASDM instances per context, if available, with a maximum of 80 ASDM instances between all contexts. You can control the number of ASDM sessions allowed per context using resource classes. (See the "Configuring a Class" section on page 4-24.) To configure ASDM access, perform the following steps: Step 1 Step 2 To identify the IP addresses from which the FWSM accepts HTTPS connections, enter the following command for each address or subnet: hostname(config)# http source_IP_address mask source_interface To enable the HTTPS server, enter the following command: hostname(config)# http server enable For example, to enable the HTTPS server and let a host on the inside interface with an address of 192.168.1.2 access ASDM, enter the following commands: hostname(config)# http server enable hostname(config)# http 192.168.1.2 255.255.255.255 inside To allow all users on the 192.168.3.0 network to access ASDM on the inside interface, enter the following command: hostname(config)# http 192.168.3.0 255.255.255.0 inside Allowing a VPN Management Connection The FWSM supports IPSec for management access. An IPSec VPN ensures that IP packets can safely travel over insecure networks such as the Internet. All communication between two VPN peers occurs over a secure tunnel, which means the packets are encrypted and authenticated by the peers. The FWSM can connect to another VPN concentrator, such as a Cisco PIX firewall or a Cisco IOS router, using a site-to-site tunnel. You specify the peer networks that can communicate over the tunnel. In the case of the FWSM, the only address available on the FWSM end of the tunnel is the interface itself. In routed mode, the FWSM can also accept connections from VPN clients, either hosts running the Cisco VPN client, or VPN concentrators such as the Cisco PIX firewall or Cisco IOS router running the Easy VPN client. Unlike a site-to-site tunnel, you do not know in advance the IP address of the client. Instead, you rely on client authentication. Transparent firewall mode does not support remote clients. Transparent mode does support site-to-site tunnels. 23-4 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM OL-20748-01
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