Yes, one of our colleagues is in China and he must use our vpn to continue his work and he is strongly complaining regarding the slow download speed, and we cannot understand the reason. He is the only one who has this problem, others do not have slow download speed problem.
I would like to share one more problem here with you and I hope someone can help me. The other problem is that some of our colleagues complain that they cannot authenticate, and they receive a message that authentication failed and then after a while then they try, and they can authenticate. It is annoying, and it seems something is wrong, and it is regarding the Active Directory, but I am not sure. IN that case I can see the following error in the log file. openvpn.auth-user.php: ERROR! Could not bind to LDAP server ActiveDirectory ourCompany.local. Please check the bind credentials. openvpn.auth-user.php: ERROR! Could not bind to LDAP server ActiveDirectory ourCompany.local. Please check the bind credentials. openvpn.auth-user.php: ERROR! Could not bind to LDAP server ActiveDirectory ourCompany.local. Please check the bind credentials. I would be very happy if you could give me your suggestions. Thanks in advance. Many regards, Huma -----Original Message----- From: Ralf Hildebrandt via Openvpn-users <openvpn-users@lists.sourceforge.net> Sent: Friday, February 10, 2023 2:15 PM To: openvpn-users@lists.sourceforge.net Subject: Re: [Openvpn-users] [ext] Does anyone suggestion regarding this error? * Huma Yari <huma.y...@kingart-games.com>: > We are having openvpn and it is a few days that I can see the following error > in our server log file: So, just a few guidelines how to approach this: 1) Find out something about that IP. Where's that located? Solution: Probably the city Sanya, province Hainan, China. The ISP is chinatelecom 2) Is at least one of my users there? 3) Does that particular user complain that he/she cannot use the VPN? I would guess somebody is portscanning your VPN server and the you're just seeing the fallout from this! > TLS Error: cannot locate HMAC in incoming packet from > [AF_INET]59.50.242.0:56359 I'm also seeing some entries: 2023-02-10 00:41:57 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:198.235.24.167:55046# 2023-02-10 00:43:06 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:167.248.133.143:3275 2023-02-10 01:11:37 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:198.235.24.14:52489 2023-02-10 02:31:01 openvpn openvpn-tcp 167.94.138.44:34694 TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:167.94.138.44:34694 2023-02-10 04:03:01 openvpn openvpn-tcp 178.79.139.171:32830 TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:178.79.139.171:32830 2023-02-10 04:24:20 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:80.82.77.33:26876 2023-02-10 04:35:02 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:146.88.240.4:60049 2023-02-10 04:38:01 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:146.88.240.4:51589 2023-02-10 04:39:26 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:146.88.240.4:44070 2023-02-10 04:41:17 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:146.88.240.4:59266 2023-02-10 04:43:27 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:146.88.240.4:49202 2023-02-10 04:50:16 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:205.210.31.54:53491 2023-02-10 09:42:58 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:185.200.118.72:56361 2023-02-10 09:58:38 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:185.200.118.72:33006 2023-02-10 10:19:15 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:185.200.118.72:51797 2023-02-10 10:21:44 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:185.200.118.72:36998 2023-02-10 10:51:30 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:185.200.118.72:59705 2023-02-10 12:23:29 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:205.210.31.44:55498 2023-02-10 14:05:31 openvpn openvpn-udp TLS Error: cannot locate HMAC in incoming packet from [AF_INET6]::ffff:198.235.24.167:56351 some of those are scans (censys-scanner.com, shodan.io, arbor-observatory.com) -- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebra...@charite.de https://www.charite.de _______________________________________________ Openvpn-users mailing list Openvpn-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openvpn-users _______________________________________________ Openvpn-users mailing list Openvpn-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openvpn-users
