iptables adding rules not in /etc/sysconfig/iptables

[jd1008]

These are the rules being added that I do not care for:

# iptables -L -n
Chain INPUT (policy DROP)
target     prot opt source destination
ACCEPT     udp  --  0.0.0.0/0 0.0.0.0/0            udp dpt:53
ACCEPT     tcp  --  0.0.0.0/0 0.0.0.0/0            tcp dpt:53
ACCEPT     udp  --  0.0.0.0/0 0.0.0.0/0            udp dpt:67
ACCEPT     tcp  --  0.0.0.0/0 0.0.0.0/0            tcp dpt:67

Why is this taking place?
I do not have any other superuser script that would do this.