Home network, Cisco ASA 5505 9.0(1), Windows Server 2008 R2 (actually SBS 2011), various Mac, Windows and embedded clients. ISP is Rochester, NY Road Runner.
Often (2-3x per day) my embedded devices like SmartTV or BluRay player will not be able to access the Internet. Occasionally (not as often) it will be even more widespread and affect all devices - laptops included. Either way, when this occurs, I can log into the ASDM interface on my firewall and click renew DHCP on the outside interface and all connectivity is restored.
Troubleshooting steps, all with no improvement:
- Recently added more RAM to F/W, increasing from 256MB to 1GB.
- Upgraded to ASA 9.0(1) from 8.3. No difference
- Changed blu-ray player. No difference
I've checked from the outside, and I still have a valid IP address, even before I renew. The firewall reports a valid IP. Some, but not all, devices are still working fine. But for some reason, clicking that Renew DHCP Lease on the external interface is instant relief.
Any ideas? Thanks!