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- Greg Russell
August 13, 2010, 8:13 pm
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I feel we have a fairly restrictive firewall in place, but my attempts to
allow DHCP from a range of IP addresses seem to fail.
Using a simple script I wrote, we see:
Resolved_Address Packets Bytes Protocol(s) Dest.Port(s)
184.108.40.206 3 560 UDP 54366
Totals 4 0.7KB for search pattern "UNSOLICITED"
The ruleset is:
:INPUT DROP [wlan0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -i lo -j ACCEPT
-A INPUT -i wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i wlan0 -p udp -s 220.127.116.11/28 -m state --state NEW -j
-A INPUT -i wlan0 -m state --state NEW -j LOG --log-level 7 --log-prefix
These types of drops seem to cause DNS delays fairly often How might I
fix this please?
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