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23.1 Legacy Series / Re: Default deny / state violation rule takes precedence over a custom rule
« on: June 19, 2023, 03:47:08 pm »
Yes, the Rule is under the VLAN interface in the Firewall>Rules> VLAN.
What I noticed in live view is that only tcp S flags (SYNC) are allowed while A (ACK) are being blocked.
On server side (it's Proxmox server with 3 vlans configured 70, 71, 99 via one NIC bridge) when I ssh from client in VLAN70 to server IP address in VLAN70 everything is ok, but the issue occurs when reaching VLAN99 proxmox address from VLAN70. Here are 2 sessions, the first one works fine, the second is frozen:
There's an arp table for my proxmox attached below. As I'm not network expert, please let me know what outputs and commands could be valuable for diagnosing the problem.
What I noticed in live view is that only tcp S flags (SYNC) are allowed while A (ACK) are being blocked.
On server side (it's Proxmox server with 3 vlans configured 70, 71, 99 via one NIC bridge) when I ssh from client in VLAN70 to server IP address in VLAN70 everything is ok, but the issue occurs when reaching VLAN99 proxmox address from VLAN70. Here are 2 sessions, the first one works fine, the second is frozen:
Code: [Select]
# netstat -pant | grep ssh
tcp 0 0 192.168.70.10:22 192.168.70.103:34538 ESTABLISHED 2257291/sshd: root@
tcp 0 3604 192.168.99.10:22 192.168.70.103:54188 ESTABLISHED 2254739/sshd: root@
There's an arp table for my proxmox attached below. As I'm not network expert, please let me know what outputs and commands could be valuable for diagnosing the problem.