Names a network group — a set of networks that can be associated with a TCP Redirect Group to control which destination networks get redirected. This name is the join key between an abstract redirect rule, like cssgCfgTCPRedirGrpForUnAuthUsers, and the concrete set of destination subnets that rule should apply to, so the redirect only fires for traffic headed to networks actually listed in the named group. An operator might create a network group named 'ad-networks' via cssgTcpRedirNetworkMapGrpName and populate it with known advertiser subnets, so only traffic to those specific networks gets redirected rather than every outbound connection.