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Copy pathiptable.go
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iptable.go
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package jail
import (
"log"
"github.com/coreos/go-iptables/iptables"
)
func setupHostIptable() error {
ipt, err := iptables.New()
if err != nil {
log.Fatal(err.Error())
}
has, err := ipt.Exists("nat", "POSTROUTING", "-s", "10.8.8.0/24", "!", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "MASQUERADE")
if err != nil {
return err
}
if has == false {
err := ipt.Append("nat", "POSTROUTING", "-s", "10.8.8.0/24", "!", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "MASQUERADE")
return err
}
has, err = ipt.Exists("filter", "FORWARD", "-i", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
if has == false {
err := ipt.Append("filter", "FORWARD", "-i", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
}
has, err = ipt.Exists("filter", "FORWARD", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
if has == false {
err := ipt.Append("filter", "FORWARD", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
return err
}
return nil
}
func cleanHostIptable() error {
ipt, err := iptables.New()
if err != nil {
log.Fatal(err.Error())
}
has, err := ipt.Exists("nat", "POSTROUTING", "-s", "10.8.8.0/24", "!", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "MASQUERADE")
if err != nil {
return err
}
if has == true {
err := ipt.Delete("nat", "POSTROUTING", "-s", "10.8.8.0/24", "!", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "MASQUERADE")
return err
}
has, err = ipt.Exists("filter", "FORWARD", "-i", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
if has == true {
err := ipt.Delete("filter", "FORWARD", "-i", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
}
has, err = ipt.Exists("filter", "FORWARD", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
if err != nil {
return err
}
if has == true {
err := ipt.Delete("filter", "FORWARD", "-o", "jaila", "-m", "comment", "--comment", "jail rule", "-j", "ACCEPT")
return err
}
return nil
}