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How to get WOL working on different subnets?

Hey there,

we got plenty of VLANs/subnets for client-PCs which we'd like to wake up in the middle of the night for update issues. Unluckily after switching to our new SG450 WOL doesn't seem to work anymore which it did with our old Cisco ASAs. I read something about directed broadcasts not working with Sophos but that was like 3 years ago. Any news about this or am I just missing something in our configuration for WOL?

Regards,

Mika

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0 Andreas Czech over 6 years ago

Hi Mika,

I've a similar Situation. I try to wake up a NAS in VLAN B from a Computer in VLAN A. Did you found a Solution?

Andy
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0 MikaThiele over 6 years ago in reply to Andreas Czech

Hi Andy,

unluckily I wasn't able to find a solution to it yet, but we also pushed the priority on this topic back, so I wasn't really doing much about it.

As i don't expect Sophos to change their UTMs in those regards, i will probably have to think of a different solution, like placing a VM in all subnets and trigger it this way.
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0 Andreas Czech over 6 years ago in reply to MikaThiele

the VM is a possible Workaround, but I haven't any VM-Host in these Subnet.

so there must be a Solution (hopefully).

I've created a NAT 1:1 Rule for reaching this VLAN, but maybe wol requires additional a NAT-Rule (SNAT)?

Will try and inform you about Success / Failure.
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0 MikaThiele over 6 years ago in reply to Andreas Czech

Thanks, i might give it another shot in some weeks, when my schedule is less crowdy.
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0 Andreas Czech over 6 years ago in reply to MikaThiele

the SNAT-Rule on Port 9 (should be the wol-Port) don't worked.

Will think about another Solution.
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0 BAlfson over 6 years ago in reply to Andreas Czech

There are different ways to do this. A command line solution is:

/usr/sbin/ether-wake -i INTERFACE MACADDRESS

There's also the approach described in this thread.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 MikaThiele over 6 years ago in reply to BAlfson

Hey Bob,

I want to wake up clients in subnet A from our deployment server in subnet B, how exactly is this gonna help my case?

Cheers,

Mika
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0 BAlfson over 6 years ago in reply to MikaThiele

I don't know what skill sets you have available to you, Mika. Someone adept at SSH and Linux scripts could use the command line approach. Otherwise, the method described in the thread I linked to is probably a better bet.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 Andreas Czech over 6 years ago in reply to MikaThiele

Hi Mika,

after a tries I got it to work -> happy :-)

Solution:

connect via Webinterface of the UTM

goto Management -> System Settings and activate in the Shell Access -> in the Shell Access Tab

use Putty to establish a SSH Conntection to the UTM

Login to the SG105 as loginuser
change to root, Command -> su -
Execute this Command: /usr/sbin/ether-wake -i INTERFACE MAC

eg. /usr/sbin/ether-wake -i eth0 00:11:22:33:44:55

Explanation: Putty
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0 Andreas Czech over 6 years ago in reply to MikaThiele

Hi Mika,

after a tries I got it to work -> happy :-)

Solution:

connect via Webinterface of the UTM

goto Management -> System Settings and activate in the Shell Access -> in the Shell Access Tab

use Putty to establish a SSH Conntection to the UTM

Login to the SG105 as loginuser
change to root, Command -> su -
Execute this Command: /usr/sbin/ether-wake -i INTERFACE MAC

eg. /usr/sbin/ether-wake -i eth0 00:11:22:33:44:55

Explanation: Putty
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