I have a simple configuration. An ADSL modem and an access point that acts as a dhcp server for the wireless clients.
The problem is that the access point does not advertise the dns servers that are configured at the adsl modem to wireless clients and i have to insert them manually in order to connect to the Internet.
If the dns fixup protocol's max-length is set to the default 512 bytes, you are unable to resolve some domains. This issue may occur if a firewall blocks the transfer of UDP packets that are larger than 512 bytes.
With Extension Mechanisms for DNS (EDNS0), "Extension Mechanisms for DNS (EDNS0)," DNS requestors can advertise UDP packet size and transfer packets larger than 512 bytes. By default firewall have security features turned on that block UDP packets that are larger than 512 bytes. As a result, DNS queries may fail and other DNS traffic connections may fail.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...