The old - default behaviour (use one port allocated by the OS) is available by - setting -query-port=0, and setting the query port to a positive - value is still works. It - now uses a new, randomly selected, port for each query.
Second addendum: following the discovery of a security flaw in the - DNS protocol, dnsmasq from version 2.43 has changed behavior. If not - specified, the operating system will select an available port number - just as it did before. Addendum: dnsmasq now has the option "query-port" (-Q), which allows - you to specify the UDP port to be used for this purpose. The replies must be to oustanding queries - which dnsmasq has forwarded, otherwise they are dropped too. This is not a security hole since dnsmasq will only accept replies to that - port: queries are dropped. If dnsmasq sent its queries - from port 53 the replies would be _to_ port 53 and get blocked. The reason for doing this is - that most firewall setups block incoming packets _to_ port 53, in order - to stop DNS queries from the outside world. Queries from dnsmasq to upstream nameservers are sent - from these ports and replies received to them.
Is this a security problem/trojan/backdoor? -A: The high ports that dnsmasq opens are for replies from the upstream - nameserver(s). +++ -1,471 +0,0 Why does dnsmasq open UDP ports >1024 as well as port 53.
Cuantos bits tiene una direccion mac ethernet android#
Remove the FAQ as well contrib, man, and po subdirectories.Ī few other files that are unused in the Android build systemĬhange-Id: I4dc6a783deba6c687bc5958ceeccc01a7870f7c6 diff -git a/FAQ b/FAQ
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