If not already set try setting your speed and duplex on the interface. duplex full speed 100 or speed 1000 depending on what your gig port is connected to.
I have double NAT running and working great, here is pretty much my running config from my Router 2821 and ASA 5505.My setup.ISP ----> 2821 -----> ASA5505 ------> FTP ServerCISCO ROUTER 2821; Gi0/0 (ISP) Gi0/1 (10.10.10.1) interface...
Issue with ASDM previously working then misteriously one day it stops working and your unable to connect to it. Is directly related to a java update, I downgraded from Java Version 7.5 to 6.4 and I am successfully able to connect to my ASA again.Here...
I had the same issue on my Catalyst 2960 with switch port fa0/24 which was connected to a WRT54G wireless router running DD-WRT v24-sp2 VPN.I ran the following commands and resolved my issue.CiscoSW1#conf tEnter configuration commands, one per line....