TuesdayStories Posted January 10 Report Posted January 10 On 1/8/2025 at 4:59 AM, jefferson1 said: I configuered on virtual box, tried ssh into the server. getting an error anyone had the same issue. 1. Check Network Settings * Bridged Networking: This mode connects your virtual machine directly to your physical network, giving it its own IP address on your local network. * Pros: Allows your VM to act like a real computer on your network. * Cons: Can sometimes cause IP address conflicts if not configured correctly. * NAT (Network Address Translation): This is the most common and often easiest to set up. It isolates the VM from your physical network but provides internet access through the host machine. * Pros: Simple to set up, no IP address conflicts. * Cons: More limited network access compared to bridged networking. * Host-Only Networking: Creates a separate virtual network that only the host machine and the VM can access. * Pros: Ideal for testing or development environments. * Cons: No internet access unless specifically configured. 2. Verify SSH Server is Running * Check SSH Service Status: * On the guest OS (inside the VM), use the appropriate command to check if the SSH service is running: * Linux/macOS: sudo systemctl status sshd * Windows: sc query sshd * Start/Restart SSH Service: * If the SSH service is not running: * Linux/macOS: sudo systemctl start sshd * Windows: sc start sshd 3. Firewall Rules * Check Firewall Rules: Ensure your firewall (both on the host machine and the guest OS) allows SSH traffic. * Linux/macOS: * Use ufw (Uncomplicated Firewall) or iptables to check and adjust firewall rules. * Example: sudo ufw allow ssh * Windows: * Check Windows Firewall settings and ensure it allows inbound traffic on port 22 (default SSH port). 4. SSH Client Configuration * Correct IP Address/Hostname: * Use the correct IP address or hostname of your VM. * Find the VM's IP Address: * Bridged Networking: Use ip addr show (Linux) or ifconfig (macOS) within the VM to find its IP address. * NAT/Host-Only: You may need to find the VM's IP address within the VirtualBox GUI (look for the VM's network settings). * SSH Key Pairs (Recommended): * Generate an SSH key pair: * ssh-keygen -t rsa (Linux/macOS) * Copy the public key to the ~/.ssh/authorized_keys file on the VM. This provides more secure authentication than passwords. 5. Common SSH Errors and Troubleshooting * "Connection refused": * SSH service might not be running on the server. * Firewall might be blocking SSH connections. * "Permission denied": * Incorrect username/password. * SSH keys might not be configured correctly. * "Host key verification failed": * The server's SSH host key has changed. * Use ssh -o "StrictHostKeyChecking no" <username>@<ip_address> to bypass this warning (not recommended for production environments). Example SSH Command: ssh <username>@<ip_address_or_hostname> If you're still encountering issues: * Provide the exact error message: This will help in pinpointing the specific problem. * Describe your network configuration: (Bridged, NAT, Host-Only) * Specify the operating systems: (Host OS, Guest OS) I'm here to assist further if you can provide more details about the error and your setup. By gemini AI Quote
jefferson1 Posted January 10 Author Report Posted January 10 VnMac-2:~ vn$ ssh -v [email protected] OpenSSH_8.6p1, LibreSSL 3.3.6 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files debug1: /etc/ssh/ssh_config line 54: Applying options for * debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling debug1: Connecting to 192.xxx.1.77 [192.xxx.1.77] port 22. debug1: Connection established. debug1: identity file /Users/vn/.ssh/id_rsa type -1 debug1: identity file /Users/vn/.ssh/id_rsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_dsa type -1 debug1: identity file /Users/vn/.ssh/id_dsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa_sk type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /Users/vn/.ssh/id_ed25519 type -1 debug1: identity file /Users/vn/.ssh/id_ed25519-cert type -1 debug1: identity file /Users/vn/.ssh/id_ed25519_sk type -1 debug1: identity file /Users/vn/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /Users/vn/.ssh/id_xmss type -1 debug1: identity file /Users/vn/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.2p1 Debian-2+deb12u3 debug1: compat_banner: match: OpenSSH_9.2p1 Debian-2+deb12u3 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 192.168.1.77:22 as 'osboxes.org' debug1: load_hostkeys: fopen /Users/vn/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: [email protected] MAC: compression: none debug1: kex: client->server cipher: [email protected] MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:p011Vzm5RpRWZW5RR9HNPDaam/d4tyw8HM9hGxKFUnY debug1: load_hostkeys: fopen /Users/vn/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: Host '192.xxx.1.77' is known and matches the ED25519 host key. debug1: Found key in /Users/vn/.ssh/known_hosts:6 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /Users/vn/.ssh/id_rsa debug1: Will attempt key: /Users/vn/.ssh/id_dsa debug1: Will attempt key: /Users/vn/.ssh/id_ecdsa debug1: Will attempt key: /Users/vn/.ssh/id_ecdsa_sk debug1: Will attempt key: /Users/vn/.ssh/id_ed25519 debug1: Will attempt key: /Users/vn/.ssh/id_ed25519_sk debug1: Will attempt key: /Users/vn/.ssh/id_xmss debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs= 84,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-dss,ssh-rsa,rsa -sha2-256,rsa-sha2-512> debug1: kex_input_ext_info: [email protected] (unrecognised) debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /Users/vn/.ssh/id_rsa debug1: Trying private key: /Users/vn/.ssh/id_dsa debug1: Trying private key: /Users/vn/.ssh/id_ecdsa debug1: Trying private key: /Users/vn/.ssh/id_ecdsa_sk debug1: Trying private key: /Users/vn/.ssh/id_ed25519 debug1: Trying private key: /Users/vn.ssh/id_ed25519_sk debug1: Trying private key: /Users/vn/.ssh/id_xmss debug1: Next authentication method: password [email protected]'s password: debug1: Authentications that can continue: publickey,password Permission denied, please try again. [email protected]'s password: Quote
VictoryTDP Posted January 10 Report Posted January 10 10 minutes ago, jefferson1 said: VnMac-2:~ vn$ ssh -v [email protected] OpenSSH_8.6p1, LibreSSL 3.3.6 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files debug1: /etc/ssh/ssh_config line 54: Applying options for * debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling debug1: Connecting to 192.xxx.1.77 [192.xxx.1.77] port 22. debug1: Connection established. debug1: identity file /Users/vn/.ssh/id_rsa type -1 debug1: identity file /Users/vn/.ssh/id_rsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_dsa type -1 debug1: identity file /Users/vn/.ssh/id_dsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa-cert type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa_sk type -1 debug1: identity file /Users/vn/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /Users/vn/.ssh/id_ed25519 type -1 debug1: identity file /Users/vn/.ssh/id_ed25519-cert type -1 debug1: identity file /Users/vn/.ssh/id_ed25519_sk type -1 debug1: identity file /Users/vn/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /Users/vn/.ssh/id_xmss type -1 debug1: identity file /Users/vn/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.2p1 Debian-2+deb12u3 debug1: compat_banner: match: OpenSSH_9.2p1 Debian-2+deb12u3 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 192.168.1.77:22 as 'osboxes.org' debug1: load_hostkeys: fopen /Users/vn/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: [email protected] MAC: compression: none debug1: kex: client->server cipher: [email protected] MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:p011Vzm5RpRWZW5RR9HNPDaam/d4tyw8HM9hGxKFUnY debug1: load_hostkeys: fopen /Users/vn/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: Host '192.xxx.1.77' is known and matches the ED25519 host key. debug1: Found key in /Users/vn/.ssh/known_hosts:6 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /Users/vn/.ssh/id_rsa debug1: Will attempt key: /Users/vn/.ssh/id_dsa debug1: Will attempt key: /Users/vn/.ssh/id_ecdsa debug1: Will attempt key: /Users/vn/.ssh/id_ecdsa_sk debug1: Will attempt key: /Users/vn/.ssh/id_ed25519 debug1: Will attempt key: /Users/vn/.ssh/id_ed25519_sk debug1: Will attempt key: /Users/vn/.ssh/id_xmss debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs= 84,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-dss,ssh-rsa,rsa -sha2-256,rsa-sha2-512> debug1: kex_input_ext_info: [email protected] (unrecognised) debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /Users/vn/.ssh/id_rsa debug1: Trying private key: /Users/vn/.ssh/id_dsa debug1: Trying private key: /Users/vn/.ssh/id_ecdsa debug1: Trying private key: /Users/vn/.ssh/id_ecdsa_sk debug1: Trying private key: /Users/vn/.ssh/id_ed25519 debug1: Trying private key: /Users/vn.ssh/id_ed25519_sk debug1: Trying private key: /Users/vn/.ssh/id_xmss debug1: Next authentication method: password [email protected]'s password: debug1: Authentications that can continue: publickey,password Permission denied, please try again. [email protected]'s password: check the /var/log/authlog, it will tell you where the failure is, might be sshd _config file Quote
kevinUsa Posted January 10 Report Posted January 10 On 1/7/2025 at 6:29 PM, jefferson1 said: I configuered on virtual box, tried ssh into the server. getting an error anyone had the same issue. port open unda ? Quote
jefferson1 Posted January 10 Author Report Posted January 10 9 minutes ago, VictoryTDP said: check the /var/log/authlog, it will tell you where the failure is, might be sshd _config file there is no authlog folder, i checked now Just now, kevinUsa said: port open unda ? POrt seems open, how to check? Quote
VictoryTDP Posted January 10 Report Posted January 10 5 minutes ago, jefferson1 said: there is no authlog folder, i checked now POrt seems open, how to check? nothing under /var/log/? Quote
kevinUsa Posted January 10 Report Posted January 10 31 minutes ago, jefferson1 said: there is no authlog folder, i checked now POrt seems open, how to check? Quote
kevinUsa Posted January 10 Report Posted January 10 31 minutes ago, jefferson1 said: there is no authlog folder, i checked now POrt seems open, how to check? if its local machine i think its 22 port try this on cli sudo ss -tulpn i am not sure if this is command to chekc the open ports try this once ok Quote
jefferson1 Posted January 10 Author Report Posted January 10 30 minutes ago, VictoryTDP said: nothing under /var/log/? there are other folders and files boot/apt/.... 3 minutes ago, kevinUsa said: if its local machine i think its 22 port try this on cli sudo ss -tulpn i am not sure if this is command to chekc the open ports try this once ok tcp port 22 open ani chupisthundi Quote
VictoryTDP Posted January 10 Report Posted January 10 37 minutes ago, jefferson1 said: there are other folders and files boot/apt/.... tcp port 22 open ani chupisthundi password change chesi try it Quote
kevinUsa Posted January 10 Report Posted January 10 46 minutes ago, jefferson1 said: there are other folders and files boot/apt/.... tcp port 22 open ani chupisthundi ok fine you are trying to login to the local machine using i am sure u must be using the virtual machine, so go to the bios and check if the virtualization is enabled or not, before that make sure that u have uploaded the private key to the terminal or just try using the password later u can use SSH to login.... Quote
chingchang Posted January 10 Report Posted January 10 you are getting login prompt, it means no port issue or network config issue. var/log/authlog , message and secure lo last messages chudu. it will print why it is not working .. change password and try Quote
jefferson1 Posted January 10 Author Report Posted January 10 41 minutes ago, VictoryTDP said: password change chesi try it tried for root, didn't work 30 minutes ago, kevinUsa said: ok fine you are trying to login to the local machine using i am sure u must be using the virtual machine, so go to the bios and check if the virtualization is enabled or not, before that make sure that u have uploaded the private key to the terminal or just try using the password later u can use SSH to login.... how to upload private key 29 minutes ago, chingchang said: you are getting login prompt, it means no port issue or network config issue. var/log/authlog , message and secure lo last messages chudu. it will print why it is not working .. change password and try didn't work after changing the password Quote
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