Can't access proxmox ports

[Re_Grishka]

Hi all!

I have a Proxmox and AWX server and they are located on the same network with each other. AWS sees proxmox perfectly well and from it I can connect via ssh to proxmox, but I can't Ping or connect directly to the proxmox server from an external network, only via the web interface via port 8006.
What have I tried:

• disabling/editing the proxmox firewall
• changing iptables settings
• opens ports from iptables, for example 2201

As a result, it is still not possible to access Proxmox or ping via any of the ports. Proxmox has access to both the Internet and virtual machines. In Proxmox itself, there are no logs in Iptables, firewall, or tcpdump. What could be the problem?
pveversions -v

proxmox-ve: 8.1.0 (running kernel: 6.5.11-8-pve)
pve-manager: 8.1.4 (running version: 8.1.4/ec5affc9e41f1d79)
proxmox-kernel-helper: 8.1.0
proxmox-kernel-6.5: 6.5.11-8
proxmox-kernel-6.5.11-8-pve-signed: 6.5.11-8
ceph-fuse: 17.2.7-pve2
corosync: 3.1.7-pve3
criu: 3.17.1-2
dnsmasq: 2.89-1
glusterfs-client: 10.3-5
ifupdown2: 3.2.0-1+pmx8
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-4
libknet1: 1.28-pve1
libproxmox-acme-perl: 1.5.0
libproxmox-backup-qemu0: 1.4.1
libproxmox-rs-perl: 0.3.3
libpve-access-control: 8.0.7
libpve-apiclient-perl: 3.3.1
libpve-common-perl: 8.1.0
libpve-guest-common-perl: 5.0.6
libpve-http-server-perl: 5.0.5
libpve-network-perl: 0.9.5
libpve-rs-perl: 0.8.8
libpve-storage-perl: 8.0.5
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 5.0.2-4
lxcfs: 5.0.3-pve4
novnc-pve: 1.4.0-3
proxmox-backup-client: 3.1.4-1
proxmox-backup-file-restore: 3.1.4-1
proxmox-kernel-helper: 8.1.0
proxmox-mail-forward: 0.2.3
proxmox-mini-journalreader: 1.4.0
proxmox-offline-mirror-helper: 0.6.4
proxmox-widget-toolkit: 4.1.3
pve-cluster: 8.0.5
pve-container: 5.0.8
pve-docs: 8.1.3
pve-edk2-firmware: 4.2023.08-3
pve-firewall: 5.0.3
pve-firmware: 3.9-1
pve-ha-manager: 4.0.3
pve-i18n: 3.2.0
pve-qemu-kvm: 8.1.5-2
pve-xtermjs: 5.3.0-3
qemu-server: 8.0.10
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.2-pve1

ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: enp6s18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether bc:24:11:23:14:c1 brd ff:ff:ff:ff:ff:ff
3: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether bc:24:11:23:14:c1 brd ff:ff:ff:ff:ff:ff
    inet 194.26.17.202/25 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::be24:11ff:fe23:14c1/64 scope link
       valid_lft forever preferred_lft forever
4: test: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether d6:37:63:94:a5:96 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.1/24 scope global test
       valid_lft forever preferred_lft forever
    inet6 fe80::d0a0:69ff:fedc:2d44/64 scope link
       valid_lft forever preferred_lft forever
29: tap100i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr100i0 state UNKNOWN group default qlen 1000
    link/ether 7a:13:55:ca:c0:e1 brd ff:ff:ff:ff:ff:ff
30: fwbr100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 16:ab:11:86:28:cc brd ff:ff:ff:ff:ff:ff
31: fwpr100p0@fwln100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master test state UP group default qlen 1000
    link/ether d6:37:63:94:a5:96 brd ff:ff:ff:ff:ff:ff

cat /etc/network/interfaces

auto lo
iface lo inet loopback

iface enp6s18 inet manual

auto vmbr0
iface vmbr0 inet static
        address 194.26.17.202/25
        gateway 194.26.17.129
        bridge-ports enp6s18
        bridge-stp off
        bridge-fd 0

auto test
iface test
        address 192.168.0.1/24
        post-up iptables -t nat -A POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j SNAT --to-source 194.26.17.202
        post-down iptables -t nat -D POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j SNAT --to-source 194.26.17.202
        post-up iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1
        post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1
        bridge_ports none
        bridge_stp off
        bridge_fd 0
        alias test
        ip-forward on

root@test-pve:/# systemctl is-enabled networking
enabled