# SSH Connection Options for R630-04

**Last Updated:** 2026-01-31  
**Document Version:** 1.0  
**Status:** Active Documentation

**IP:** 192.168.11.14  
**User:** root  
**Issue:** Permission denied with password authentication.

---

## Possible Causes

1. **Password incorrect** - Double-check the password
2. **Password authentication disabled** - Server may require key-based auth
3. **Account locked** - Too many failed attempts
4. **SSH configuration** - Server may have restrictive settings
5. **Wrong user** - May need different username

---

## Troubleshooting Steps

### 1. Check SSH Authentication Methods

From another host that can connect to R630-04, check:

```bash
ssh -v root@192.168.11.14 2>&1 | grep -i "auth"
```

Look for:
- `publickey` - Key-based authentication enabled
- `password` - Password authentication enabled
- `keyboard-interactive` - Interactive password prompt

### 2. Try Different Authentication Methods

**Option A: Use SSH Key (if available)**

```bash
# Check for existing SSH keys
ls -la ~/.ssh/id_*

# Copy public key to R630-04 (if you have access from another host)
ssh-copy-id root@192.168.11.14
```

**Option B: Check if password has special characters**

The password `L@kers2010` contains `@` which should work, but try:
- Typing it carefully
- Using copy-paste
- Checking for hidden characters

### 3. Connect from R630-03 (which works)

Since R630-03 works, you can:

```bash
# SSH to R630-03 first
ssh root@192.168.11.13
# Password: L@kers2010

# Then from R630-03, SSH to R630-04
ssh root@192.168.11.14
```

### 4. Check SSH Configuration on R630-04

If you have console access or another way to access R630-04:

```bash
# Check SSH configuration
cat /etc/ssh/sshd_config | grep -E "PasswordAuthentication|PubkeyAuthentication|PermitRootLogin"

# Should show:
# PasswordAuthentication yes (or the line commented out)
# PubkeyAuthentication yes
# PermitRootLogin yes (or prohibit-password)
```

### 5. Reset Root Password (if you have console access)

If you have physical/console access:

```bash
# Boot into single user mode or recovery
# Then reset password:
passwd root
```

### 6. Check Account Status

```bash
# Check if root account is locked
passwd -S root

# Check failed login attempts
lastb | grep root | tail -20
```

---

## Alternative Access Methods

### 1. Use Proxmox Console

If R630-04 is managed by another Proxmox host:

```bash
# From Proxmox host managing R630-04
pct enter <container-id>  # if it's a container
# or
qm monitor <vm-id>  # if it's a VM
```

### 2. Use iDRAC/iLO (Dell R630)

If it's a physical Dell R630 server:

- Access iDRAC interface (usually https://<idrac-ip>)
- Use remote console
- Reset password from console

### 3. Network Boot/KVM Access

If you have KVM over IP or network boot access, you can:
- Access console directly
- Reset password
- Check SSH configuration

---

## Quick Verification

Try these commands from R630-03 (which works):

```bash
# From R630-03
ssh root@192.168.11.13
# After logging in, try:
ssh -v root@192.168.11.14 2>&1 | grep -E "auth|password|key"
```

---

## Recommended Next Steps

1. **Try connecting from R630-03** - Sometimes network path matters
2. **Verify password** - Try typing it again carefully
3. **Check if password was changed** - May have been changed since last login
4. **Use console access** - If available (iDRAC, KVM, etc.)
5. **Check SSH logs on R630-04** - `/var/log/auth.log` or `journalctl -u ssh`

---

## If Password Authentication is Disabled

If the server only accepts SSH keys:

1. **Generate SSH key pair** (on your local machine):
   ```bash
   ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519_r630-04
   ```

2. **Copy public key** (if you have another way to access):
   ```bash
   # Method 1: If you have access from R630-03
   ssh root@192.168.11.13
   ssh-copy-id -i ~/.ssh/id_ed25519_r630-04.pub root@192.168.11.14
   
   # Method 2: Manual copy (if you have console access)
   # Copy the public key content to:
   # /root/.ssh/authorized_keys on R630-04
   ```

3. **Connect with key**:
   ```bash
   ssh -i ~/.ssh/id_ed25519_r630-04 root@192.168.11.14
   ```