The command 'no ip direct broadcast' became THE command to have in place back in the day of DoS Smurf attacks. Remember those? Innocent operators of large LANs were used as men-in-the-middle by attackers who would spoof their source address as the ...
Interesting problem.You've said that the interface is UP/UP. If you 'show interface' on the port in question, are the counters incrementing? If so, then the default gateway of that VLan, or subnet, has to know about the network that device gets its...
Regarding Mustafa's post concerning DNS resolution... This is a good read. It might be overkill for this particular situation involving two small overlapping networks, but it might provide inspiration.Good luck to you,-RichardEnabling Enterprise Mul...
I'm not sure there is anything you can do on the router side of things. Four hundred users sharing a T1? That's less than 4kb/s per user. Now, given the "bursty" nature of HTTP (web) traffic, that shouldn't be a problem.However, if even one user i...
"I would be leary, though, of doing this. Since many public SMTP servers now do RDNS lookups, if you are sending via a different IP than your MX record, you might have difficulty delivering mail to certain domains. "I would say that is a virtual cert...