github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/nat/factory_linux.go (about)

     1  /*
     2   * Copyright (C) 2017 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package nat
    19  
    20  import (
    21  	"os/exec"
    22  
    23  	"github.com/mysteriumnetwork/node/config"
    24  )
    25  
    26  // NewService returns linux os specific nat service based on ip tables
    27  func NewService() NATService {
    28  	if config.GetBool(config.FlagUserspace) {
    29  		return &serviceNoop{}
    30  	}
    31  	return &serviceIPTables{
    32  		ipForward: serviceIPForward{
    33  			CommandFactory: func(name string, arg ...string) Command {
    34  				return exec.Command(name, arg...)
    35  			},
    36  			CommandEnable:  []string{"sudo", "/sbin/sysctl", "-w", "net.ipv4.ip_forward=1"},
    37  			CommandDisable: []string{"sudo", "/sbin/sysctl", "-w", "net.ipv4.ip_forward=0"},
    38  			CommandRead:    []string{"/sbin/sysctl", "-n", "net.ipv4.ip_forward"},
    39  		},
    40  	}
    41  }