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UFW blocking SSH connection forwarded from management vlan, even when ufw is disabled


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On my network, I have 2 subnets, each on their own vlan. Subnet 1's (192.168.1.0/24) traffic is only forwarded to wan by the router. Subnet 2 (192.168.2.0/24), which I have set up as a management subnet, has its traffic forwarded to wan and subnet 1 by the router. A raspberry pi running raspbian on subnet 1 has an ssh server running. I can ssh into this pi from subnet 2 when ufw is not installed on the pi. However, when ufw is installed, I can no longer ssh into this system from subnet 2, but can from subnet 1. I have disabled ufw on the pi, but this behavior persists and can not seem to figure out what is causing this. What does ufw change in the firewall rules that could cause this behavior, even when it is not enabled?










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    On my network, I have 2 subnets, each on their own vlan. Subnet 1's (192.168.1.0/24) traffic is only forwarded to wan by the router. Subnet 2 (192.168.2.0/24), which I have set up as a management subnet, has its traffic forwarded to wan and subnet 1 by the router. A raspberry pi running raspbian on subnet 1 has an ssh server running. I can ssh into this pi from subnet 2 when ufw is not installed on the pi. However, when ufw is installed, I can no longer ssh into this system from subnet 2, but can from subnet 1. I have disabled ufw on the pi, but this behavior persists and can not seem to figure out what is causing this. What does ufw change in the firewall rules that could cause this behavior, even when it is not enabled?










    share|improve this question







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    linuxquestion3684 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      On my network, I have 2 subnets, each on their own vlan. Subnet 1's (192.168.1.0/24) traffic is only forwarded to wan by the router. Subnet 2 (192.168.2.0/24), which I have set up as a management subnet, has its traffic forwarded to wan and subnet 1 by the router. A raspberry pi running raspbian on subnet 1 has an ssh server running. I can ssh into this pi from subnet 2 when ufw is not installed on the pi. However, when ufw is installed, I can no longer ssh into this system from subnet 2, but can from subnet 1. I have disabled ufw on the pi, but this behavior persists and can not seem to figure out what is causing this. What does ufw change in the firewall rules that could cause this behavior, even when it is not enabled?










      share|improve this question







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      linuxquestion3684 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      On my network, I have 2 subnets, each on their own vlan. Subnet 1's (192.168.1.0/24) traffic is only forwarded to wan by the router. Subnet 2 (192.168.2.0/24), which I have set up as a management subnet, has its traffic forwarded to wan and subnet 1 by the router. A raspberry pi running raspbian on subnet 1 has an ssh server running. I can ssh into this pi from subnet 2 when ufw is not installed on the pi. However, when ufw is installed, I can no longer ssh into this system from subnet 2, but can from subnet 1. I have disabled ufw on the pi, but this behavior persists and can not seem to figure out what is causing this. What does ufw change in the firewall rules that could cause this behavior, even when it is not enabled?







      linux networking firewall vlan ufw






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