I've installed OpenVPN on a CentOS machine and created a user on it. Then I installed the client software on my PC and tried to connect to the VPN. The strange problem is that when I am using the Internet based on mobile data, I can connect to VPN, but as I use ADSL connection, connecting fails and I get the errors below:
Note: IP in this error log is changed to a sample one
Thu Sep 26 08:44:29 2019 OpenVPN 2.4.7 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Apr 25 2019
Thu Sep 26 08:44:29 2019 Windows version 6.2 (Windows 8 or greater) 64bit
Thu Sep 26 08:44:29 2019 library versions: OpenSSL 1.1.0j 20 Nov 2018, LZO 2.10
Thu Sep 26 08:44:29 2019 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25341
Thu Sep 26 08:44:29 2019 Need hold release from management interface, waiting...
Thu Sep 26 08:44:29 2019 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25341
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'state on'
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'log all on'
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'echo all on'
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'bytecount 5'
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'hold off'
Thu Sep 26 08:44:29 2019 MANAGEMENT: CMD 'hold release'
Thu Sep 26 08:44:29 2019 Outgoing Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Thu Sep 26 08:44:29 2019 Outgoing Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Thu Sep 26 08:44:29 2019 Incoming Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Thu Sep 26 08:44:29 2019 Incoming Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Thu Sep 26 08:44:29 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]104.179.258.10:50555
Thu Sep 26 08:44:29 2019 Socket Buffers: R=[65536->65536] S=[65536->65536]
Thu Sep 26 08:44:29 2019 Attempting to establish TCP connection with [AF_INET]104.179.258.10:50555 [nonblock]
Thu Sep 26 08:44:29 2019 MANAGEMENT: >STATE:1569474869,TCP_CONNECT,,,,,,
Thu Sep 26 08:44:31 2019 TCP connection established with [AF_INET]104.179.258.10:50555
Thu Sep 26 08:44:31 2019 TCP_CLIENT link local: (not bound)
Thu Sep 26 08:44:31 2019 TCP_CLIENT link remote: [AF_INET]104.179.258.10:50555
Thu Sep 26 08:44:31 2019 MANAGEMENT: >STATE:1569474871,WAIT,,,,,,
Thu Sep 26 08:44:32 2019 MANAGEMENT: >STATE:1569474872,AUTH,,,,,,
Thu Sep 26 08:44:32 2019 TLS: Initial packet from [AF_INET]104.179.258.10:50555, sid=fcdf87ec 47b25bf8
Thu Sep 26 08:45:00 2019 read TCP_CLIENT: Unknown error (code=10060)
Thu Sep 26 08:45:00 2019 Connection reset, restarting [-1]
Thu Sep 26 08:45:00 2019 SIGUSR1[soft,connection-reset] received, process restarting
Thu Sep 26 08:45:00 2019 MANAGEMENT: >STATE:1569474900,RECONNECTING,connection-reset,,,,,
Thu Sep 26 08:45:00 2019 Restart pause, 5 second(s)
Thu Sep 26 08:45:05 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]104.179.258.10:50555
Thu Sep 26 08:45:05 2019 Socket Buffers: R=[65536->65536] S=[65536->65536]
Thu Sep 26 08:45:05 2019 Attempting to establish TCP connection with [AF_INET]104.179.258.10:50555 [nonblock]
Thu Sep 26 08:45:05 2019 MANAGEMENT: >STATE:1569474905,TCP_CONNECT,,,,,,
Thu Sep 26 08:45:06 2019 TCP connection established with [AF_INET]104.179.258.10:50555
Thu Sep 26 08:45:06 2019 TCP_CLIENT link local: (not bound)
Thu Sep 26 08:45:06 2019 TCP_CLIENT link remote: [AF_INET]104.179.258.10:50555
Thu Sep 26 08:45:06 2019 MANAGEMENT: >STATE:1569474906,WAIT,,,,,,
Thu Sep 26 08:45:06 2019 MANAGEMENT: >STATE:1569474906,AUTH,,,,,,
Thu Sep 26 08:45:06 2019 TLS: Initial packet from [AF_INET]104.179.258.10:50555, sid=a1b6af90 ed5ef60f
Thu Sep 26 08:45:36 2019 read TCP_CLIENT: Unknown error (code=10060)
Thu Sep 26 08:45:36 2019 Connection reset, restarting [-1]
Thu Sep 26 08:45:36 2019 SIGUSR1[soft,connection-reset] received, process restarting
Thu Sep 26 08:45:36 2019 MANAGEMENT: >STATE:1569474936,RECONNECTING,connection-reset,,,,,
Thu Sep 26 08:45:36 2019 Restart pause, 5 second(s)
Thu Sep 26 08:45:41 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]104.179.258.10:50555
Thu Sep 26 08:45:41 2019 Socket Buffers: R=[65536->65536] S=[65536->65536]
Thu Sep 26 08:45:41 2019 Attempting to establish TCP connection with [AF_INET]104.179.258.10:50555 [nonblock]
Thu Sep 26 08:45:41 2019 MANAGEMENT: >STATE:1569474941,TCP_CONNECT,,,,,,`
Do you know what is the problem and how can I solve it?