# R630-04 Authentication Issue

**IP:** 192.168.11.14  
**User:** root  
**Status:** ❌ Permission denied with password authentication

---

## Current Situation

- **SSH Port:** ✅ Open and accepting connections (port 22)
- **Authentication Methods Offered:** `publickey,password`
- **Password Auth:** ❌ Failing (permission denied)
- **Public Key Auth:** ⚠️ Not configured

---

## Debug Information

From SSH verbose output:
```
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: password
Permission denied, please try again.
```

This shows:
- Server accepts both authentication methods
- Public key auth tried first (no keys configured)
- Password auth attempted but rejected

---

## Possible Solutions

### Option 1: Verify Password

Double-check the password. Common issues:
- Typos (especially with special characters like `@`)
- Caps Lock
- Wrong password entirely
- Password changed since last successful login

### Option 2: Connect from R630-03

Since R630-03 works, try:

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

# Then from R630-03, connect to R630-04
ssh root@192.168.11.14
# Try password: L@kers2010
```

Sometimes connecting from within the same network helps.

### Option 3: Use Console Access

If you have physical/console access to R630-04:

1. **Physical Console** - Connect KVM/keyboard directly
2. **iDRAC/iLO** - Use Dell's remote management (if available)
3. **Serial Console** - If configured

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

# Reset root password
passwd root

# Check account status
passwd -S root
lastb | grep root | tail -10  # Check failed login attempts
```

### Option 4: Set Up SSH Key Authentication

If you can access R630-04 through another method (console, Proxmox host, etc.):

**Generate SSH key:**
```bash
# On your local machine
ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519_r630-04 -N ""
```

**Copy public key to R630-04:**
```bash
# If you have console access to R630-04
cat ~/.ssh/id_ed25519_r630-04.pub
# Then on R630-04:
mkdir -p /root/.ssh
chmod 700 /root/.ssh
echo "PASTE_PUBLIC_KEY_HERE" >> /root/.ssh/authorized_keys
chmod 600 /root/.ssh/authorized_keys
```

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

### Option 5: Check if Password Was Changed

If you have access to another Proxmox host that manages R630-04, or have documentation, verify:
- When was the password last changed?
- Is there a password management system?
- Are there multiple root accounts or users?

---

## Quick Checklist

- [ ] Try password again carefully (check for typos)
- [ ] Try connecting from R630-03
- [ ] Check if password was changed
- [ ] Try console/iDRAC access
- [ ] Check if SSH keys are set up
- [ ] Verify you're using the correct username (root)

---

## If You Have Console Access

Once you can access the console, run:

```bash
# Reset root password
passwd root

# Verify SSH configuration allows password auth
grep -E "^PasswordAuthentication|^#PasswordAuthentication" /etc/ssh/sshd_config

# Should show:
# PasswordAuthentication yes
# OR (commented out means yes by default)
# #PasswordAuthentication yes

# If it shows "PasswordAuthentication no", change it:
sed -i 's/^PasswordAuthentication no/PasswordAuthentication yes/' /etc/ssh/sshd_config
systemctl restart sshd

# Check root account status
passwd -S root

# Check for locked account
usermod -U root  # Unlock if locked
```

---

## Next Steps

1. **Try password one more time** - Make sure Caps Lock is off, type carefully
2. **Try from R630-03** - Network path might matter
3. **Get console access** - Physical KVM or iDRAC
4. **Check password documentation** - Verify if password was changed
5. **Set up SSH keys** - More secure and reliable long-term solution

