Networking question, for a friend...
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then we would have a 172.x.x.x and a 192.x.x.x so there is no way they are going to talk, which is what we want
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@kimberlin said in Networking question, for a friend...:
@scotth yeah, i'm with you. My thought was to see if they could change the machine IP to 172.whatever to get it the heck out of any kind of possible routing issue.
That's what I would try. Just to be sure.
Is there by any chance "internet sharing" active on the client PC? This effectively turns that PC into a router. Just an idea.
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@thwr it would be a longshot, there would be no reason they would have turned it on. I just keep going back to there having to be a route for all 192.168.x.x traffic to go elsewhere. that is the only thing i can think of that would snipe the traffic off that nic.
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@thwr thanks for talking through this with me BTW. been a while since i ran in the networking world.
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@kimberlin said in Networking question, for a friend...:
My question is how on earth could traffic from the machine be going over the corp network if the corp subnet really is 255.255.255.0?
This will work if the default gateway is within /24 of the IP of the PC. i.e. if the default gateway is something like 192.168.1.254, that is within range of the 255.255.255.0 subnet and would allow the PC to connect.
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@kimberlin said in Networking question, for a friend...:
then we would have a 172.x.x.x and a 192.x.x.x so there is no way they are going to talk, which is what we want
Sure, but make sure you only set a Default gateway on the corp NIC.
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Question - Why is the corporate side not using DHCP?
Assuming DHCP is available on the corp network, turn that on, make sure there is no default gateway on the device network adapter. Then check the settings. You should be able to know the subnet mask right away with the assigned info.
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@kimberlin said in Networking question, for a friend...:
@thwr thanks for talking through this with me BTW. been a while since i ran in the networking world.
my pleasure
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@kimberlin said in Networking question, for a friend...:
@thwr it would be a longshot, there would be no reason they would have turned it on. I just keep going back to there having to be a route for all 192.168.x.x traffic to go elsewhere. that is the only thing i can think of that would snipe the traffic off that nic.
Was just a wild guess
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@dashrender Agreed, i doubt it is DHCP and to answer why, i don't know, can't see it. Their MSP is just playing blame game i was trying to posit a solution without having all the data. If those things are each on 255.255.255.0 subnets though, no way they can talk without something routing it.
