zishuo/netmaker
1
0
Fork 0
mirror of https://github.com/gravitl/netmaker.git synced 2025-10-22 00:19:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

added iptables check cmd

Browse Source
This commit is contained in:
0xdcarns
2022-03-28 10:00:35 -04:00
parent 57f438247a
commit d74106c071
1 changed files with 11 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
serverctl/iptables.go
View File

@@ -110,16 +110,19 @@ func iptablesPortForward(entry string, inport string, outport string, isIP bool)
return errors.New("could not locate ip for " + entry) return errors.New("could not locate ip for " + entry)
} }
_, err := ncutils.RunCmd("iptables -t nat -A PREROUTING -p tcp --dport "+inport+" -j DNAT --to-destination "+address+":"+outport, false) if output, _ := ncutils.RunCmd("iptables -t nat -C PREROUTING -p tcp --dport "+inport+" -j DNAT --to-destination "+address+":"+outport, false); output == "" {
if err != nil { _, err := ncutils.RunCmd("iptables -t nat -A PREROUTING -p tcp --dport "+inport+" -j DNAT --to-destination "+address+":"+outport, false)
if err != nil {
return err
}
_, err = ncutils.RunCmd("iptables -t nat -A PREROUTING -p udp --dport "+inport+" -j DNAT --to-destination "+address+":"+outport, false)
if err != nil {
return err
}
_, err = ncutils.RunCmd("iptables -t nat -A POSTROUTING -j MASQUERADE", false)
return err return err
} }
_, err = ncutils.RunCmd("iptables -t nat -A PREROUTING -p udp --dport "+inport+" -j DNAT --to-destination "+address+":"+outport, false) return nil
if err != nil {
return err
}
_, err = ncutils.RunCmd("iptables -t nat -A POSTROUTING -j MASQUERADE", false)
return err
} }
// if running in host networking mode, run iptables to map to CoreDNS container // if running in host networking mode, run iptables to map to CoreDNS container