I have set up an ftp user on my ubuntu server. I can sftp in to ftp_user#ip, am asked for my password, and get connected fine.
Filezilla (which worked 3 months ago), doesn't connect. This is a redacted version of the ssh logs:
Jul 19 14:18:33 sshd[14275]: Invalid user user from port 47990
Jul 19 14:18:33 sshd[14275]: Received disconnect from port 47990:11: Normal Shutdown, Thank you for playing [preauth]
Jul 19 14:18:33 sshd[14275]: Disconnected from invalid user user port 47990 [preauth]
Jul 19 14:18:44 sshd[14277]: Invalid user user from port 48558
Jul 19 14:18:44 sshd[14277]: Received disconnect from port 48558:11: Normal Shutdown, Thank you for playing [preauth]
Jul 19 14:18:44 sshd[14277]: Disconnected from invalid user user port 48558 [preauth]
Jul 19 14:18:55 sshd[14282]: Invalid user user from port 49142
Jul 19 14:18:55 sshd[14282]: Received disconnect from port 49142:11: Normal Shutdown, Thank you for playing [preauth]
Jul 19 14:18:55 sshd[14282]: Disconnected from invalid user user port 49142 [preauth]
This sounds like Filezilla is trying user "user", which is not correct, but my settings has:
EDIT: it works if I use the quickconnect bar, but not the above main settings.
What am I doing wrong?
Ever since I upgraded to pfSense 2.5.0, my NordVPN interface does not work anymore. Traffic does not get routes to the NordVPN gateway, as pfSense reports it as "down" with 100% package loss. When checking "Status -> OpenVPN" the connection is reported as UP, but the gateway is DOWN. I don't understand how this is possible, but the log provides some clues, although I don't understand what goes wrong when reading the log.
OpenVPN Log (private IPs removed):
Feb 19 07:42:59 openvpn 79266 Initialization Sequence Completed
Feb 19 07:43:58 openvpn 79266 Authenticate/Decrypt packet error: missing authentication info
Feb 19 07:44:58 openvpn 79266 Authenticate/Decrypt packet error: missing authentication info
Feb 19 07:45:58 openvpn 79266 [nl852.nordvpn.com] Inactivity timeout (--ping-restart), restarting
Feb 19 07:45:58 openvpn 79266 SIGUSR1[soft,ping-restart] received, process restarting
Feb 19 07:45:58 openvpn 79266 Restart pause, 10 second(s)
Feb 19 07:46:08 openvpn 79266 NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
Feb 19 07:46:08 openvpn 79266 Outgoing Control Channel Authentication: Using 512 bit message hash 'SHA512' for HMAC authentication
Feb 19 07:46:08 openvpn 79266 Incoming Control Channel Authentication: Using 512 bit message hash 'SHA512' for HMAC authentication
Feb 19 07:46:08 openvpn 79266 TCP/UDP: Preserving recently used remote address: [AF_INET]194.127.172.103:1194
Feb 19 07:46:08 openvpn 79266 Socket Buffers: R=[42080->524288] S=[57344->524288]
Feb 19 07:46:08 openvpn 79266 UDPv4 link local (bound): [AF_INET]x.x.x.x:0
Feb 19 07:46:08 openvpn 79266 UDPv4 link remote: [AF_INET]y.y.y.y:1194
Feb 19 07:46:08 openvpn 79266 TLS: Initial packet from [AF_INET]y.y.y.y.z:1194, sid=2ce7940f f02613d1
Feb 19 07:46:08 openvpn 79266 VERIFY WARNING: depth=0, unable to get certificate CRL: CN=nl852.nordvpn.com
Feb 19 07:46:08 openvpn 79266 VERIFY WARNING: depth=1, unable to get certificate CRL: C=PA, O=NordVPN, CN=NordVPN CA5
Feb 19 07:46:08 openvpn 79266 VERIFY WARNING: depth=2, unable to get certificate CRL: C=PA, O=NordVPN, CN=NordVPN Root CA
Feb 19 07:46:08 openvpn 79266 VERIFY OK: depth=2, C=PA, O=NordVPN, CN=NordVPN Root CA
Feb 19 07:46:08 openvpn 79266 VERIFY OK: depth=1, C=PA, O=NordVPN, CN=NordVPN CA5
Feb 19 07:46:08 openvpn 79266 VERIFY KU OK
Feb 19 07:46:08 openvpn 79266 Validating certificate extended key usage
Feb 19 07:46:08 openvpn 79266 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
Feb 19 07:46:08 openvpn 79266 VERIFY EKU OK
Feb 19 07:46:08 openvpn 79266 VERIFY OK: depth=0, CN=nl852.nordvpn.com
Feb 19 07:46:08 openvpn 79266 WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1582', remote='link-mtu 1634'
Feb 19 07:46:08 openvpn 79266 WARNING: 'auth' is used inconsistently, local='auth [null-digest]', remote='auth SHA512'
Feb 19 07:46:08 openvpn 79266 Control Channel: TLSv1.2, cipher TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
Feb 19 07:46:08 openvpn 79266 [nl852.nordvpn.com] Peer Connection Initiated with [AF_INET]194.127.172.103:1194
Feb 19 07:46:09 openvpn 79266 SENT CONTROL [nl852.nordvpn.com]: 'PUSH_REQUEST' (status=1)
Feb 19 07:46:09 openvpn 79266 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1,dhcp-option DNS 103.86.96.100,dhcp-option DNS 103.86.99.100,sndbuf 524288,rcvbuf 524288,explicit-exit-notify,comp-lzo no,route-gateway z.z.z.z,topology subnet,ping 60,ping-restart 180,ifconfig g.g.g.g 255.255.255.0,peer-id 3'
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: timers and/or timeouts modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: explicit notify parm(s) modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: compression parms modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: --sndbuf/--rcvbuf options modified
Feb 19 07:46:09 openvpn 79266 Socket Buffers: R=[524288->524288] S=[524288->524288]
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: --ifconfig/up options modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: route options modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: route-related options modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: peer-id set
Feb 19 07:46:09 openvpn 79266 OPTIONS IMPORT: adjusting link_mtu to 1657
Feb 19 07:46:09 openvpn 79266 Using peer cipher 'AES-256-CBC'
Feb 19 07:46:09 openvpn 79266 Data Channel: using negotiated cipher 'AES-256-CBC'
Feb 19 07:46:09 openvpn 79266 Outgoing Data Channel: Cipher 'AES-256-CBC' initialized with 256 bit key
Feb 19 07:46:09 openvpn 79266 Outgoing Data Channel: Using 512 bit message hash 'SHA512' for HMAC authentication
Feb 19 07:46:09 openvpn 79266 Incoming Data Channel: Cipher 'AES-256-CBC' initialized with 256 bit key
Feb 19 07:46:09 openvpn 79266 Incoming Data Channel: Using 512 bit message hash 'SHA512' for HMAC authentication
Feb 19 07:46:09 openvpn 79266 Preserving previous TUN/TAP instance: ovpnc8
Feb 19 07:46:09 openvpn 79266 NOTE: Pulled options changed on restart, will need to close and reopen TUN/TAP device.
Feb 19 07:46:09 openvpn 79266 Closing TUN/TAP interface
Feb 19 07:46:09 openvpn 79266 /usr/local/sbin/ovpn-linkdown ovpnc8 1500 1637 a.b.c.d 255.255.255.0 init
Feb 19 07:46:10 openvpn 79266 ROUTE_GATEWAY a.b.c.d/255.255.254.0 IFACE=re0 HWADDR=00:e2:6c:68:07:be
Feb 19 07:46:10 openvpn 79266 TUN/TAP device ovpnc8 exists previously, keep at program end
Feb 19 07:46:10 openvpn 79266 TUN/TAP device /dev/tun8 opened
Feb 19 07:46:10 openvpn 79266 /sbin/ifconfig ovpnc8 x.x.x.x y.y.y.y mtu 1500 netmask 255.255.255.0 up
Feb 19 07:46:10 openvpn 79266 /sbin/route add -net x.x.x.x x.x.x.x 255.255.255.0
Feb 19 07:46:10 openvpn 79266 /usr/local/sbin/ovpn-linkup ovpnc8 1500 1637 x.x.x.x 255.255.255.0 init
Feb 19 07:46:10 openvpn 79266 Initialization Sequence Completed
And the gateway log:
Feb 19 04:16:02 dpinger 68141 send_interval 500ms loss_interval 2000ms time_period 60000ms report_interval 0ms data_len 1 alert_interval 1000ms latency_alarm 500ms loss_alarm 20% dest_addr x.x.x.x bind_addr x.x.x.x identifier "NORDVPN_VPNV4 "
Feb 19 04:16:04 dpinger 68141 NORDVPN_VPNV4 x.x.x.x: Alarm latency 0us stddev 0us loss 100%
Feb 19 04:19:13 dpinger 16894 send_interval 500ms loss_interval 2000ms time_period 60000ms report_interval 0ms data_len 1 alert_interval 1000ms latency_alarm 500ms loss_alarm 20% dest_addr x.x.x.x bind_addr x.x.x.x identifier "WAN_DHCP "
Feb 19 04:19:13 dpinger 17398 send_interval 500ms loss_interval 2000ms time_period 60000ms report_interval 0ms data_len 1 alert_interval 1000ms latency_alarm 500ms loss_alarm 20% dest_addr x.x.x.x bind_addr x.x.x.x identifier "NORDVPN_VPNV4 "
Feb 19 04:19:15 dpinger 17398 NORDVPN_VPNV4 x.x.x.x: Alarm latency 0us stddev 0us loss 100%
In Firewall -> Rules -> LAN I adjusted the "default allow LAN to any rule" to the gateway "NordVPN". Outbound NAT is set to manual, with the top rule taking the LAN net as source and the NORDVPN interface.
Any help is appreciated. As said, the current configuration worked fine in 2.4.5 -- the latest release before upgrading to 2.5.0. I'm considering downgrading at this point.
Changed fallback DEA to AES-256-CBC from AES-256-GCM, and it's working fine
Go to VPN/OpenVPN/Client, and edit the setting "Fallback Data Encryption Algorithm"
NordVPN has posted updated documentation for pfSense 2.5.0, titled: pfSense 2.5 Setup with NordVPN.
As #NDK has mentioned in their A'er the updated docs show that you need to change the Fallback Data Encryption Algorithm to AES-256-CBC.
In compute node of OPenstack environment, I added to bridge and restarted network, but the network can't be up.
ovs-vsctl add-br br-eno1
ovs-vsctl add-port br-eno1 eno1
systemctl restart network.service
In the log, I can find the following errors:
Jul 09 12:58:46 sh-compute-c7k4-bay06 kvm[3000]: 1 guest now active
Jul 09 12:58:46 sh-compute-c7k4-bay06 kvm[3001]: 0 guests now active
Jul 09 12:58:47 sh-compute-c7k4-bay06 libvirtd[7510]: 2020-07-09 04:58:47.118+0000: 7510: error
virNetSocketReadWire:1806 : End of f
Jul 09 12:58:47 sh-compute-c7k4-bay06 systemd[1]: openstack-nova-compute.service holdoff time over,
scheduling restart.
Jul 09 12:58:47 sh-compute-c7k4-bay06 systemd[1]: Stopped OpenStack Nova Compute Server.
-- Subject: Unit openstack-nova-compute.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has finished shutting down.
Jul 09 12:58:47 sh-compute-c7k4-bay06 systemd[1]: Starting OpenStack Nova Compute Server...
-- Subject: Unit openstack-nova-compute.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has begun starting up.
Jul 09 12:58:49 sh-compute-c7k4-bay06 systemd[1]: Started OpenStack Nova Compute Server.
-- Subject: Unit openstack-nova-compute.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- Unit openstack-nova-compute.service has finished starting up.
-- The start-up result is done.
I was trying to connect to a .ovpn file using OpenVPN but when I try to connect it with this command:
sudo openvpn --config downloaded-client-config.ovpn
It failed with the following output:
Wed Jun 17 23:53:03 2020 OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jan 9 2019
Wed Jun 17 23:53:03 2020 library versions: OpenSSL 1.0.2g 1 Mar 2016, LZO 2.08
Wed Jun 17 23:53:03 2020 Cipher algorithm 'AES-256-GCM' not found (OpenSSL)
Wed Jun 17 23:53:03 2020 Exiting due to fatal error
My OpenSSL version: OpenSSL 1.1.0h 27 Mar 2018
OpenVPN version: OpenVPN 2.3.10
Ubuntu Version: 16.04
Also, I ran this command as well to see the list of ciphers I have:
openvpn --show-ciphers
and AES-256-GCM was not present in that in that list.
How can I add it manually if it's possible?
PS: I am kind of a layman with respect to OpenVPN
This is an issue with the OpenVPN version. The AES-256-GCM cipher was added in version 2.4.
You can follow these steps to install OpenVPN 2.4 on Ubuntu 16.04 at which point the cipher should properly work. The suggestion in the comments to upgrade your OS entirely would also work, but is certainly not necessary!
I had a similar issue trying to connect a 2.3.2 client to a 2.4.4 server. I referred to this cipher negotiation reference and updated both server and client config to use cipher AES-256-CBC
When the 2.4 server is set to AES-256-CBC, the clients (also set to AES-256-CBC) negotiate the following ciphers:
2.5 - AES-256-GCM
2.4 - AES-256-GCM
2.3 - AES-256-CBC
2.2 - AES-256-CBC
my rstudio server was hanging too often while loading starting r shiny app. So after googling around i tried to stop and start the rstudio server again. i also tried to kill all process running on 8787 port. But had no luck solving the issue. now r studio server keeps waiting while opening on web browser.
I have used below command to kill process running on 8787 port. after running the command there was no result.
sudo kill -TERM 20647
(20647 is port where rserver process is listening. i got this port number after running 'sudo netstat -ntlp | grep :8787' command).
to stop and restart r studio server, i used below command
sudo rstudio-server stop
sudo rstudio-server start
expected result is working sr studio server which doesnt hang while loading shiny app.
after running status command i found below error logged for rstudio server.
rstudio-server.service - RStudio Server
Loaded: loaded (/etc/systemd/system/rstudio-server.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Wed 2019-08-28 04:50:07 CDT; 11s ago
Process: 31611 ExecStop=/usr/bin/killall -TERM rserver (code=exited, status=0/SUCCESS)
Process: 31609 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=0/SUCCESS)
Main PID: 31610 (code=exited, status=1/FAILURE)
CGroup: /system.slice/rstudio-server.service
└─20647 /usr/lib/rstudio-server/bin/rserver
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: Unit rstudio-server.service entered failed state.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: rstudio-server.service failed.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: rstudio-server.service holdoff time over, scheduling r...rt.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: Stopped RStudio Server.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: start request repeated too quickly for rstudio-server....ice
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: Failed to start RStudio Server.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: Unit rstudio-server.service entered failed state.
Aug 28 04:50:07 nds-vm1.novalocal systemd[1]: rstudio-server.service failed.
As a last resort, i have restarted my VM where i am running r-studio server. It seems to have resolved my issue.