Barracuda Networks NG Network Access Client SP4 Administrator's Manual page 156

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Use these instead if the Access Control Server IP addresses are distributed by DHCP:
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In order to verify if an Access Control Server IP address was received through DHCP, look up the
Barracuda NG Access Monitor Access Control Server IPs
from DHCP, page 160).
Fig. 11–5 Connection error using ICMP connectivity checking (see 3.1.3)
154 Barracuda NG Access Monitor
Configure a valid Access Control Server IP address locally ( see 11.3.2 Access
Control Server IPs from Registry, page 160)
By using the
Emergency Network Adapter Repair
11.3.12 Allow Emergency Network Adapter Repair, page 163)
By using the operating system's built in ipconfig tool to obtain a new IP
address for the client computer which will include a Access Control Server IP
address to connect to
function/button ( see
dialog. (see 11.3.3 Access Control Server IPs