On August 11–12, 1939, the movie The Wizard of Oz premiered in Dennis, MA, Kenosha, WI, and Oconomowoc, WI. Fearing the film would be unpopular, movie studio executives chose these cities to debut the movie to better gauge audience reaction. Much to their delight, the film was a hit as moviegoers packed theaters. On August 15, Metro-Goldwyn-Mayer Studios hosted a star-studded, "official ...
Theodor Seuss Geisel—better known as "Dr. Seuss"— authored some of the most popular and best-selling children's books ever written.
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let's look at these two iptables rules which are often used to allow outgoing DNS: iptables -A OUTPUT -p udp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A
First give a -p option like -p tcp or -p udp. Examples: iptables -A INPUT -p tcp --dport 22 -m state --state NEW -j DROP iptables -A INPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT You could also try -p all but I've never done that and don't find too much support for it in the examples.
with "u32 match ip sport 80" in Linux tc I can match port 80, but how can I match a port range 10000 - 20000 ?
At first glance you're only allowing DNS responses to be received and don't create any DNS related rules in the OUTPUT chain to actually allow sending DNS queries out. You current rules: #DNS resolution input and output iptables -A INPUT -p udp --dport 53 -d 8.8.8.8,8.8.4.4 -j ACCEPT ^^^^^ iptables -A INPUT -p udp --sport 53 -s 8.8.8.8,8.8.4.4 -j ACCEPT ^^^^^ Additionally, DNS can also use TCP ...