IPTables configuration samples in Python

iptables_python.py

import iptc
# sudo iptables -t filter -F
 
if __name__=="__main__":
    chain = iptc.Chain(iptc.Table(iptc.Table.FILTER), "INPUT")
 
    # Block | ANY | ANY
    rule_block_all = iptc.Rule()
    rule_block_all.in_interface = "eth+"
    rule_block_all.src = "0.0.0.0/0.0.0.0"
    rule_block_all.target = iptc.Target(rule_block_all, "DROP")
    chain.append_rule(rule_block_all)
 
    # Allow | 3389 | ANY
    rule_allow_rdp = iptc.Rule()
    rule_allow_rdp.in_interface = "eth+"
    rule_allow_rdp.src = "4.4.4.4/255.255.255.0"
    match_rdp = iptc.Match(rule_allow_rdp, "tcp")
    match_rdp.dport = "3389"
    rule_allow_rdp.add_match(match_rdp)
    rule_allow_rdp.target = iptc.Target(rule_allow_rdp, "ACCEPT")
    chain.append_rule(rule_allow_rdp)
 
    # Allow | 80 | 192.168.0.0
    rule_allow_ssh = iptc.Rule()
    rule_allow_ssh.in_interface = "eth+"
    rule_allow_ssh.src = "192.168.0.0/255.255.0.0"
    match = rule_allow_ssh.create_match("tcp")
    match.dport = "80"
    rule_allow_ssh.target = iptc.Target(rule_allow_ssh, "ACCEPT")
    chain.append_rule(rule_allow_ssh)