You can't do that. Just try selecting a different kernel during boot up. You have 5 installed.

on another firewall, installed 2 weeks ago, I have the same problem, can I copy the kernel from another firewall and restart it?

You can choose a kernel during boot process
When you start the server you will see for a few second the boot menu.
Choose by scrolling down the kernel version you like to boot.

On ./boot/grub2/ i have found two backup of grub.cfg, the first one use the old kernel, can i use this cfg file?

Nick Howitt wrote:

Which kernel are you running with at the moment:

uname -r

If it is kernel-3.10.0-1062.9.1.el7, you could consider rebooting to an older one. Which do you have installed:

rpm -qa | grep ^kernel-3 | sort

The kernel version is 3.10.0-1062.9.1.el7.x86_64

How to reboot with an old kernel? The old one for me is: 3.10.0-862.11.6.v7.x86_64

The other kernel was:
kernel-3.10.0-1062.4.3.el7.x86_64
kernel-3.10.0-1062.9.1.el7.x86_64
kernel-3.10.0-862.11.6.v7.x86_64
kernel-3.10.0-957.10.1.v7.x86_64
kernel-3.10.0-957.21.3.v7.x86_64

P.s. Thank you Nick

Which kernel are you running with at the moment:

uname -r

If it is kernel-3.10.0-1062.9.1.el7, you could consider rebooting to an older one. Which do you have installed:

rpm -qa | grep ^kernel-3 | sort

Which version of ClearOS? ethx interfaces are generally only seen in VM's in ClearOS 7.

It you are getting an IP address of 192.168.0.2, it suggests you are behind another router. In this case you'd normally give ClearOS a fixed IP outside the router's DHCP scope. What is your network topology? Are you able to bridge your external router so ClearOS gets a WAN IP? It may mean switching the ClearOS WAN to PPPoE if your external connection is xDSL.

The command from PuTTy does produce output for all PCI NIC's and should work for VM NIC's, just not USB NIC's. e.g:

[root@microserver ~]# lspci -k | grep Eth -A 3

02:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 2-port Gigabit Ethernet PCIe

        Subsystem: Hewlett-Packard Company NC332i Adapter

        Kernel driver in use: tg3

        Kernel modules: tg3

02:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 2-port Gigabit Ethernet PCIe

        Subsystem: Hewlett-Packard Company NC332i Adapter

        Kernel driver in use: tg3

        Kernel modules: tg3

Even today another firewall has stopped working by blocking the network and internet from one of my clients.
With a brusque restart, everything went back to working

Is it possible that an updated clearos will tilt the firewall?

I've try the command from putty but no output, on 23th december the problem was synchronizing hardware clock

Dec 23 01:29:37 gateway software-updates: no updates required
Dec 23 02:02:01 gateway timesync: synchronizing with ntpdate
Dec 23 02:02:10 gateway timesync: synchronizing hardware clock <- after this the firewall was "dead" no internet connection
Dec 23 09:26:46 gateway firewall: Starting firewall... <- after modem restart
Dec 23 09:26:46 gateway firewall: Loading environment
Dec 23 09:26:46 gateway firewall: Detected WAN role for interface: eth0
Dec 23 09:26:46 gateway firewall: Detected WAN backup role for interface: eth0
Dec 23 09:26:46 gateway firewall: Detected LAN role for interface: eth1
Dec 23 09:26:46 gateway firewall: if_get_address: SIOCGIFADDR: Cannot assign requested address
Dec 23 09:26:46 gateway firewall: Warning: LAN device has no IP address: eth1 <- this eth1 is set with static ip
Dec 23 09:26:46 gateway firewall: Setting kernel parameters
Dec 23 09:26:46 gateway firewall: Detected WAN info - eth0 192.168.0.2 on network 192.168.0.0/24
Dec 23 09:26:46 gateway firewall: Detected Backup WAN info - eth0 192.168.0.2 on network 192.168.0.0/24
Dec 23 09:26:46 gateway firewall: Using gateway mode
Dec 23 09:26:46 gateway firewall: Loading kernel modules
Dec 23 09:26:46 gateway firewall: Loading kernel modules for NAT
Dec 23 09:26:46 gateway firewall: Setting default policy to DROP
Dec 23 09:26:46 gateway firewall: Defining custom chains
Dec 23 09:26:46 gateway firewall: Running blocked external rules
Dec 23 09:26:46 gateway firewall: Running custom rules
Dec 23 09:26:46 gateway firewall: Running common rules
Dec 23 09:26:46 gateway firewall: Running incoming denied rules
Dec 23 09:26:46 gateway firewall: Running user-defined incoming rules
Dec 23 09:26:46 gateway firewall: Allowing incoming tcp port/range 81
Dec 23 09:26:46 gateway firewall: Running default incoming allowed rules
Dec 23 09:26:46 gateway firewall: Running user-defined port forward rules
Dec 23 09:26:46 gateway firewall: Running 1-to-1 NAT rules
Dec 23 09:26:46 gateway firewall: Running user-defined proxy rules
Dec 23 09:26:46 gateway firewall: Content filter is offline
Dec 23 09:26:46 gateway firewall: Web proxy is offline
Dec 23 09:26:46 gateway firewall: Running multipath
Dec 23 09:26:46 gateway firewall: Running Masquerading
Dec 23 09:26:46 gateway firewall: Enabling NAT on WAN interface eth0
Dec 23 09:26:46 gateway firewall: Running user-defined outgoing block rules
Dec 23 09:26:46 gateway firewall: Running default forwarding rules
Dec 23 09:26:46 gateway firewall: Execution time: 0.129s
Dec 23 09:26:46 gateway firewall: Running post-firewall: 110770
Dec 23 09:26:46 gateway firewall: Running /etc/clearos/firewall.d/local
Dec 23 09:26:46 gateway firewall: Running /etc/clearos/firewall.d/10-netify-fwa
Dec 23 09:26:47 gateway events: network_connected - event occurred
Dec 23 09:26:47 gateway events: network_connected - triggered hook: date
Dec 23 09:26:47 gateway timesync: synchronizing with ntpdate
Dec 23 09:26:47 gateway firewall6: Starting firewall...
Dec 23 09:26:47 gateway firewall6: Loading environment
Dec 23 09:26:47 gateway firewall6: Detected WAN role for interface: eth0
Dec 23 09:26:47 gateway firewall6: Detected WAN backup role for interface: eth0
Dec 23 09:26:47 gateway firewall6: Detected LAN role for interface: eth1
Dec 23 09:26:47 gateway firewall6: if_get_address: SIOCGIFADDR: Cannot assign
requested address
Dec 23 09:26:47 gateway firewall6: Warning: LAN device has no IP address: eth1
Dec 23 09:26:47 gateway firewall6: Setting kernel parameters
Dec 23 09:26:47 gateway firewall6: Detected WAN info - eth0 192.168.0.2 on network
192.168.0.0/24
Dec 23 09:26:47 gateway firewall6: Detected Backup WAN info - eth0 192.168.0.2 on
network 192.168.0.0/24
Dec 23 09:26:47 gateway firewall6: Using gateway mode
Dec 23 09:26:47 gateway firewall6: Loading kernel modules
Dec 23 09:26:47 gateway firewall6: Loading kernel modules for NAT
Dec 23 09:26:47 gateway firewall6: Setting default policy to DROP
Dec 23 09:26:47 gateway firewall6: Defining custom chains
Dec 23 09:26:47 gateway firewall6: Running blocked external rules
Dec 23 09:26:47 gateway firewall6: Running custom rules
Dec 23 09:26:47 gateway firewall6: Running common rules
Dec 23 09:26:47 gateway firewall6: Running incoming denied rules
Dec 23 09:26:47 gateway firewall6: Running user-defined incoming rules
Dec 23 09:26:47 gateway firewall6: Running default incoming allowed rules
Dec 23 09:26:47 gateway firewall6: Running user-defined port forward rules
Dec 23 09:26:47 gateway firewall6: Running Masquerading
Dec 23 09:26:47 gateway firewall6: Enabling NAT on WAN interface eth0
Dec 23 09:26:47 gateway firewall6: Running user-defined outgoing block rules
Dec 23 09:26:47 gateway firewall6: Running default forwarding rules
Dec 23 09:26:47 gateway firewall6: Execution time: 0.065s
Dec 23 09:26:47 gateway firewall6: Running post-firewall: 110770
Dec 23 09:26:47 gateway firewall6: Running /etc/clearos/firewall.d/local
Dec 23 09:26:47 gateway firewall6: Running /etc/clearos/firewall.d/10-netify-fwa
Dec 23 09:26:56 gateway timesync: synchronizing hardware clock
Dec 23 09:26:59 gateway firewall: Starting firewall...
Dec 23 09:26:59 gateway firewall: Loading environment
Dec 23 09:26:59 gateway firewall: Detected WAN role for interface: eth0
Dec 23 09:26:59 gateway firewall: Detected LAN role for interface: eth1
Dec 23 09:26:59 gateway firewall: if_get_address: SIOCGIFADDR: Cannot assign
requested address
Dec 23 09:26:59 gateway firewall: Warning: LAN device has no IP address: eth1
Dec 23 09:26:59 gateway firewall: Setting kernel parameters
Dec 23 09:26:59 gateway firewall: Detected WAN info - eth0 192.168.0.2 on network
192.168.0.0/24
Dec 23 09:26:59 gateway firewall: Using gateway mode
Dec 23 09:26:59 gateway firewall: Loading kernel modules
Dec 23 09:26:59 gateway firewall: Loading kernel modules for NAT
Dec 23 09:26:59 gateway firewall: Setting default policy to DROP
Dec 23 09:26:59 gateway firewall: Defining custom chains
Dec 23 09:26:59 gateway firewall: Running blocked external rules
Dec 23 09:26:59 gateway firewall: Running custom rules
Dec 23 09:26:59 gateway firewall: Running common rules
Dec 23 09:26:59 gateway firewall: Running incoming denied rules
Dec 23 09:26:59 gateway firewall: Running user-defined incoming rules
Dec 23 09:26:59 gateway firewall: Allowing incoming tcp port/range 81
Dec 23 09:26:59 gateway firewall: Running default incoming allowed rules
Dec 23 09:26:59 gateway firewall: Running user-defined port forward rules
Dec 23 09:26:59 gateway firewall: Running 1-to-1 NAT rules
Dec 23 09:26:59 gateway firewall: Running user-defined proxy rules
Dec 23 09:26:59 gateway firewall: Content filter is offline
Dec 23 09:26:59 gateway firewall: Web proxy is offline
Dec 23 09:26:59 gateway firewall: Running multipath
Dec 23 09:26:59 gateway firewall: Running Masquerading
Dec 23 09:26:59 gateway firewall: Enabling NAT on WAN interface eth0
Dec 23 09:26:59 gateway firewall: Running user-defined outgoing block rules
Dec 23 09:26:59 gateway firewall: Running default forwarding rules
Dec 23 09:26:59 gateway firewall: Execution time: 0.108s
Dec 23 09:26:59 gateway firewall: Running post-firewall: 110770
Dec 23 09:26:59 gateway firewall: Running /etc/clearos/firewall.d/local
Dec 23 09:26:59 gateway firewall: Running /etc/clearos/firewall.d/10-netify-fwa
Dec 23 09:27:00 gateway events: network_connected - event occurred
Dec 23 09:27:00 gateway events: network_connected - triggered hook: date
Dec 23 09:27:00 gateway timesync: synchronizing with ntpdate
Dec 23 09:27:00 gateway firewall6: Starting firewall...
Dec 23 09:27:00 gateway firewall6: Loading environment
Dec 23 09:27:00 gateway firewall6: Detected WAN role for interface: eth0
Dec 23 09:27:00 gateway firewall6: Detected LAN role for interface: eth1
Dec 23 09:27:00 gateway firewall6: if_get_address: SIOCGIFADDR: Cannot assign
requested address
Dec 23 09:27:00 gateway firewall6: Warning: LAN device has no IP address: eth1
Dec 23 09:27:00 gateway firewall6: Setting kernel parameters
Dec 23 09:27:00 gateway firewall6: Detected WAN info - eth0 192.168.0.2 on network
192.168.0.0/24
Dec 23 09:27:00 gateway firewall6: Using gateway mode
Dec 23 09:27:00 gateway firewall6: Loading kernel modules
Dec 23 09:27:00 gateway firewall6: Loading kernel modules for NAT
Dec 23 09:27:00 gateway firewall6: Setting default policy to DROP
Dec 23 09:27:00 gateway firewall6: Defining custom chains
Dec 23 09:27:00 gateway firewall6: Running blocked external rules
Dec 23 09:27:00 gateway firewall6: Running custom rules
Dec 23 09:27:00 gateway firewall6: Running common rules
Dec 23 09:27:00 gateway firewall6: Running incoming denied rules
Dec 23 09:27:00 gateway firewall6: Running user-defined incoming rules
Dec 23 09:27:00 gateway firewall6: Running default incoming allowed rules
Dec 23 09:27:00 gateway firewall6: Running user-defined port forward rules
Dec 23 09:27:00 gateway firewall6: Running Masquerading
Dec 23 09:27:00 gateway firewall6: Enabling NAT on WAN interface eth0
Dec 23 09:27:00 gateway firewall6: Running user-defined outgoing block rules
Dec 23 09:27:00 gateway firewall6: Running default forwarding rules
Dec 23 09:27:00 gateway firewall6: Execution time: 0.089s
Dec 23 09:27:00 gateway firewall6: Running post-firewall: 110770
Dec 23 09:27:00 gateway firewall6: Running /etc/clearos/firewall.d/local
Dec 23 09:27:00 gateway firewall6: Running /etc/clearos/firewall.d/10-netify-fwa
Dec 23 09:27:09 gateway timesync: synchronizing hardware clock
Dec 23 10:28:17 gateway firewall: Starting firewall... <- when we arrive and restart the firewall
Dec 23 10:28:17 gateway firewall: Loading environment
Dec 23 10:28:17 gateway firewall: Detected WAN role for interface: eth0
Dec 23 10:28:17 gateway firewall: Detected LAN role for interface: eth1
Dec 23 10:28:17 gateway firewall: Setting kernel parameters
Dec 23 10:28:17 gateway firewall: Detected WAN info - eth0 192.168.0.2 on network
192.168.0.0/24
Dec 23 10:28:17 gateway firewall: Detected LAN info - eth1 192.168.1.1 on network <- correct eth1 lan ip
192.168.1.0/24
Dec 23 10:28:17 gateway firewall: Using gateway mode
Dec 23 10:28:17 gateway firewall: Loading kernel modules
Dec 23 10:28:17 gateway firewall: Starting firewall...
Dec 23 10:28:17 gateway firewall: Loading environment
Dec 23 10:28:17 gateway firewall: Detected WAN role for interface: eth0
Dec 23 10:28:17 gateway firewall: Detected LAN role for interface: eth1
Dec 23 10:28:17 gateway firewall: Setting kernel parameters
Dec 23 10:28:17 gateway events: onboot - event occurred
Dec 23 10:28:17 gateway events: onboot - triggered hook: language
Dec 23 10:28:17 gateway firewall: Detected WAN info - eth0 192.168.0.2 on network
192.168.0.0/24
Dec 23 10:28:17 gateway firewall: Detected LAN info - eth1 192.168.1.1 on network
192.168.1.0/24
Dec 23 10:28:17 gateway firewall: Using gateway mode
Dec 23 10:28:17 gateway firewall: Loading kernel modules
Dec 23 10:28:17 gateway events: onboot - triggered hook: suva
Dec 23 10:28:17 gateway firewall: Loading kernel modules for NAT
Dec 23 10:28:17 gateway firewall: Setting default policy to DROP
Dec 23 10:28:17 gateway firewall: Defining custom chains
Dec 23 10:28:17 gateway firewall: Running blocked external rules
Dec 23 10:28:17 gateway firewall: Running custom rules
Dec 23 10:28:17 gateway firewall: Running common rules
Dec 23 10:28:17 gateway firewall: Running incoming denied rules
Dec 23 10:28:17 gateway firewall: Running user-defined incoming rules
Dec 23 10:28:17 gateway firewall: Allowing incoming tcp port/range 81
Dec 23 10:28:17 gateway firewall: Running default incoming allowed rules
Dec 23 10:28:17 gateway firewall: Running user-defined port forward rules

What is the output of "lspci -k | grep Eth -A 3"?