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import of dnsmasq-2.41.tar.gz
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22
FAQ
22
FAQ
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Q: Why does dnsmasq open UDP ports >1024 as well as port 53.
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Is this a security problem/trojan/backdoor?
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A: The high ports that dnsmasq opens is for replies from the upstream
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A: The high ports that dnsmasq opens are for replies from the upstream
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nameserver(s). Queries from dnsmasq to upstream nameservers are sent
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from these ports and replies received to them. The reason for doing this is
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that most firewall setups block incoming packets _to_ port 53, in order
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@@ -39,10 +39,9 @@ A: They are negative entries: that's what the N flag means. Dnsmasq asked
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Q: Will dnsmasq compile/run on non-Linux systems?
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A: Yes, there is explicit support for *BSD and MacOS X. There are
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start-up scripts for MacOS X Tiger and Panther in /contrib. Earlier
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dnsmasq releases ran under Solaris, but that capability has
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rotted. Dnsmasq will link with uclibc to provide small
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A: Yes, there is explicit support for *BSD and MacOS X and Solaris.
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There are start-up scripts for MacOS X Tiger and Panther
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in /contrib. Dnsmasq will link with uclibc to provide small
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binaries suitable for use in embedded systems such as
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routers. (There's special code to support machines with flash
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filesystems and no battery-backed RTC.)
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@@ -50,7 +49,7 @@ A: Yes, there is explicit support for *BSD and MacOS X. There are
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ports and building dnsmasq with "make MAKE=gmake"
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For other systems, try altering the settings in config.h.
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Q: My companies' nameserver knows about some names which aren't in the
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Q: My company's nameserver knows about some names which aren't in the
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public DNS. Even though I put it first in /etc/resolv.conf, it
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dosen't work: dnsmasq seems not to use the nameservers in the order
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given. What am I doing wrong?
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@@ -380,6 +379,14 @@ A: This a variant on the iptables problem. Explicit details on how to
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http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2005q3/000431.html
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Q: I'm using dnsmasq on a machine with the shorewall firewall, and
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DHCP doesn't work. What's the problem?
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A: This a variant on the iptables problem. Explicit details on how to
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proceed can be found at
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http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2007q4/001764.html
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Q: Dnsmasq logs "running as root because setting capabilities failed"
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when it starts up. Why did that happen and what can do to fix it?
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@@ -429,9 +436,6 @@ A: In almost all cases: none. If you have the normal arrangement with
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chain reaction runaway will occur. To avoid this, use syslog-ng
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and turn on syslog-ng's dns-cache function.
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