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How to redirect VPN traffic on OS X



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I have following problem: I need to connect to VPN and access specific resources (ip addresses). When I connect to VPN all network traffic goes through VPN but in fact I need only specific destinations to be accessed over VPN and the rest of the traffic to go through default route and avoid VPN.



Here is the result of netstat -nr



Before I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.0.1 UGScI 19 0 en1


After I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.1.1.1 UGSc 123 3744 jnc0
default 192.168.0.1 UGScI 19 0 en1


So as you can see I have 2 default routes after VPN connected.
All internet traffic goes through the first default route which is undesirable behaviour.



Is there a way to set priority for the default route? So all traffic by default doesn't go through VPN but only manually created routes redirect to VPN i.e. sudo route -n add 172.0.0.1 10.1.1.1










share|improve this question














bumped to the homepage by Community 18 mins ago


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  • Talk with your VPN provider and ask them to enable split tunnelling.

    – EEAA
    Nov 30 '15 at 19:26











  • It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

    – endryha
    Nov 30 '15 at 19:32













  • Please provide details on the VPN server configuration.

    – EEAA
    Nov 30 '15 at 19:34











  • Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

    – sardean
    Nov 30 '15 at 22:06











  • Duplicate of serverfault.com/questions/247135/…

    – damolp
    Dec 2 '15 at 4:45


















0















I have following problem: I need to connect to VPN and access specific resources (ip addresses). When I connect to VPN all network traffic goes through VPN but in fact I need only specific destinations to be accessed over VPN and the rest of the traffic to go through default route and avoid VPN.



Here is the result of netstat -nr



Before I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.0.1 UGScI 19 0 en1


After I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.1.1.1 UGSc 123 3744 jnc0
default 192.168.0.1 UGScI 19 0 en1


So as you can see I have 2 default routes after VPN connected.
All internet traffic goes through the first default route which is undesirable behaviour.



Is there a way to set priority for the default route? So all traffic by default doesn't go through VPN but only manually created routes redirect to VPN i.e. sudo route -n add 172.0.0.1 10.1.1.1










share|improve this question














bumped to the homepage by Community 18 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • Talk with your VPN provider and ask them to enable split tunnelling.

    – EEAA
    Nov 30 '15 at 19:26











  • It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

    – endryha
    Nov 30 '15 at 19:32













  • Please provide details on the VPN server configuration.

    – EEAA
    Nov 30 '15 at 19:34











  • Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

    – sardean
    Nov 30 '15 at 22:06











  • Duplicate of serverfault.com/questions/247135/…

    – damolp
    Dec 2 '15 at 4:45














0












0








0








I have following problem: I need to connect to VPN and access specific resources (ip addresses). When I connect to VPN all network traffic goes through VPN but in fact I need only specific destinations to be accessed over VPN and the rest of the traffic to go through default route and avoid VPN.



Here is the result of netstat -nr



Before I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.0.1 UGScI 19 0 en1


After I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.1.1.1 UGSc 123 3744 jnc0
default 192.168.0.1 UGScI 19 0 en1


So as you can see I have 2 default routes after VPN connected.
All internet traffic goes through the first default route which is undesirable behaviour.



Is there a way to set priority for the default route? So all traffic by default doesn't go through VPN but only manually created routes redirect to VPN i.e. sudo route -n add 172.0.0.1 10.1.1.1










share|improve this question














I have following problem: I need to connect to VPN and access specific resources (ip addresses). When I connect to VPN all network traffic goes through VPN but in fact I need only specific destinations to be accessed over VPN and the rest of the traffic to go through default route and avoid VPN.



Here is the result of netstat -nr



Before I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.0.1 UGScI 19 0 en1


After I connect to VPN:



Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.1.1.1 UGSc 123 3744 jnc0
default 192.168.0.1 UGScI 19 0 en1


So as you can see I have 2 default routes after VPN connected.
All internet traffic goes through the first default route which is undesirable behaviour.



Is there a way to set priority for the default route? So all traffic by default doesn't go through VPN but only manually created routes redirect to VPN i.e. sudo route -n add 172.0.0.1 10.1.1.1







routing mac-osx mac-osx-server route






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 30 '15 at 19:24









endryhaendryha

10614




10614





bumped to the homepage by Community 18 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







bumped to the homepage by Community 18 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.















  • Talk with your VPN provider and ask them to enable split tunnelling.

    – EEAA
    Nov 30 '15 at 19:26











  • It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

    – endryha
    Nov 30 '15 at 19:32













  • Please provide details on the VPN server configuration.

    – EEAA
    Nov 30 '15 at 19:34











  • Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

    – sardean
    Nov 30 '15 at 22:06











  • Duplicate of serverfault.com/questions/247135/…

    – damolp
    Dec 2 '15 at 4:45



















  • Talk with your VPN provider and ask them to enable split tunnelling.

    – EEAA
    Nov 30 '15 at 19:26











  • It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

    – endryha
    Nov 30 '15 at 19:32













  • Please provide details on the VPN server configuration.

    – EEAA
    Nov 30 '15 at 19:34











  • Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

    – sardean
    Nov 30 '15 at 22:06











  • Duplicate of serverfault.com/questions/247135/…

    – damolp
    Dec 2 '15 at 4:45

















Talk with your VPN provider and ask them to enable split tunnelling.

– EEAA
Nov 30 '15 at 19:26





Talk with your VPN provider and ask them to enable split tunnelling.

– EEAA
Nov 30 '15 at 19:26













It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

– endryha
Nov 30 '15 at 19:32







It seems it is enabled because under ubuntu I have a script which creates appropriate routes and set priority to custom split route table but I am not sure how to do this on OS X. If interested take a look at apple.stackexchange.com/questions/217700/…

– endryha
Nov 30 '15 at 19:32















Please provide details on the VPN server configuration.

– EEAA
Nov 30 '15 at 19:34





Please provide details on the VPN server configuration.

– EEAA
Nov 30 '15 at 19:34













Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

– sardean
Nov 30 '15 at 22:06





Are you using L2TP VPN configured in the OS X Network System Preferences? If so, have you verified that if you go to  > System Preferences > Network > select your VPN interface on the left pane > Advanced... > Options > deselect the "Send all traffic over VPN connection" option?

– sardean
Nov 30 '15 at 22:06













Duplicate of serverfault.com/questions/247135/…

– damolp
Dec 2 '15 at 4:45





Duplicate of serverfault.com/questions/247135/…

– damolp
Dec 2 '15 at 4:45










1 Answer
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Yes, you can delete the default route (for the VPN) and then set up new route(s) for only those networks/address that you want to get routed through the VPN. Use sudo route delete to delete routes.






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    Yes, you can delete the default route (for the VPN) and then set up new route(s) for only those networks/address that you want to get routed through the VPN. Use sudo route delete to delete routes.






    share|improve this answer




























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      Yes, you can delete the default route (for the VPN) and then set up new route(s) for only those networks/address that you want to get routed through the VPN. Use sudo route delete to delete routes.






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        Yes, you can delete the default route (for the VPN) and then set up new route(s) for only those networks/address that you want to get routed through the VPN. Use sudo route delete to delete routes.






        share|improve this answer













        Yes, you can delete the default route (for the VPN) and then set up new route(s) for only those networks/address that you want to get routed through the VPN. Use sudo route delete to delete routes.







        share|improve this answer












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        answered Aug 4 '18 at 8:00









        apocalysqueapocalysque

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