which hardware would you recommend me for following design. In the near future I will have to secure our mail server (1000 users), terminal servers 5 (100-200 users) and web server with firewall. I have 64 IP addresses and 100Mbit/s. Which device would be more appropriate Cisco ASA5510 or router Cisco 28xx?
First of all, the router is router and the firewall is firewall. Cisco IOS Routers have the firewall functions such as CBAC (instections), but Cisco is going to move the firewall functions on the ASA in the future, so my reccomandations is ASA.
Since you are not talking about routing but protection, so the ASA is solution. and since you have 1000 users I would reccomand 5520 or 5540 instead of 5510.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...