dns_max_udp_queries_per_port

dns_max_udp_queries_per_port — limit the number of DNS queries sent using the same UDP source port

dns_max_udp_queries_per_port = 10

Momentum uses User Datagram Protocol (UDP) for DNS queries. Each internal channel to the DNS server(s) is assigned a dynamic (ephemeral) UDP source port number. All DNS queries sent over that channel use the same source port. When many queries originate from a single source port, security devices such as firewalls may interpret this pattern as malicious behavior (e.g., a DNS-based attack) and drop or block the queries. This setting limits how many DNS queries will be sent from each source port before Momentum allocates a new port number, helping to avoid triggering such security measures.

The default value is 0 (no limit). Most users do not need to change this value unless experiencing DNS-related firewall blocks.

dns_max_udp_queries_per_port is valid in the global scope.