#GNS3 ASA 5505 SERIAL#

Such a scenario would make it more likely that you'd place a router on the edge outside of the ASA, right, because then you'd need multiple links? If you're connecting to remote sites via VPN or MPLS or whatever, you use your own internal addressing. That's so it is routable from the internet. If it's publicly accessible, meaning will be used to terminate IPSec VPN tunnels or SSL VPN connections, then yes, it should be configured with a public ip address. If it's simply to filter traffic coming into / going out of your network then no. Is it usually best practice to configure the outside interface on the ASA with a public IP, even if it's inside an edge router? Why or why not? If, however, you intend to have your DNS server, or your Web Server, for example, publicly accessible, then you would want to have them assigned a public IP address directly. If you have DNS, SMTP, servers, and they only need to be accessed internally (or internally through a s2s or gre tunnel), then they can have a private IP address. And if I have that same /28 and have web, DNS, and SMTP servers in a DMZ, I'd likely perform a NAT over the ASA from my pool of public IPs. As soon as the active interface loses its link status and goes down, the standby interface becomes active and takes over passing traffic.' Only one of the interfaces is active at any given time the other interface stays in a standby state. As a redundant pair, two interfaces are set aside for the same ASA function (inside, outside, and so on), and connect to the same network. From ciscopress: 'To keep an ASA interface up and active all the time, you can configure physical interfaces as redundant pairs. When you say 'redundant link' though, I think of something that can 'be removed without loss of function' - which an ASA is capable of.

I believe that if you intend to load balance the traffic that's being passed through in any way, then the router is the man for the job. I think for the most part that sounds right. If I have a /28 for example from the service provider and I want to use redundant links to the SP or whatever, I'd likely place a router on the outer edge because I need multiple interfaces. You may still need a router if you are terminating multiple ISPs and want to send certain traffic via one ISP and other traffic to the other ISP although with PBR due very soon for the ASAs I suspect that will mean even less routers deployed between you and the ISP.Īs with pretty much everything else around your internet edge design it really comes down to IP addressing in terms of public IPs as to what you can and can't do and David was spot on when he said if you only get a single public IP you wouldn't want a router between you and the ISP because you want that IP on your firewall. Nowadays that isn't usually a concern so if you don't need a router then there is nothing wrong with connecting the firewall directly.

#GNS3 ASA 5505 SERIAL#

Configure password encryption for this router GATEWAY(config)#service password-encryptionĬonsole access is protected by the 'cisco' password and login is required at console access.There is nothing wrong with connecting your firewall direct to the ISP, it all depends on your requirements.īear in mind that the firewall router combination has been around for a long time and back in the day ISPs would present, for example, serial connections to the customer which firewalls don't support so a router was needed in between. The enable secret password of a Cisco ISR router is used for restricting access to enable mode and to the global configuration mode (configure terminal) of a router. The enable secret command stores a MD5 hash of the password required for privileged mode access. Configure the enable password and secret to 'cisco' Router>enableĮnter configuration commands, one per line. The hostname command has to be used to changethe router's hostname.

Gns3 asa 5505