2.3.5. Lab – Self IP Port Lockdown and more¶
2.3.5.1. Task 1 – Effects of Port Lockdown¶
Ping 10.1.10.245
Attention
Q1. Was echo response received?
SSH to 10.1.10.245
Attention
Q2. Was ssh successful? Why not?
Open Network > Self IPs > 10.1.10.245 and change Port Lockdown to Allow Defaults
SSH to 10.1.10.245
Browse to https://10.1.10.245
Attention
Q1. Did SSH work? Did browsing work?
Q2. What other ports are opened when you select Allow Defaults.
Open Network > Self IPs > 10.1.10.245 and change Port Lockdown to Allow Custom and add Port 22
SSH to 10.1.10.245
Browse to https://10.1.10.245
Attention
Q3. Did SSH work? Did browsing work?
2.3.5.2. Task 2 – Effects of Port Lockdown¶
Open System >> Platform
On SSH IP Allow > Specify Range of 10.1.1.10-20
Attention
Q4. Does existing SSH window still work?
Open new SSH session to 10.1.1.245
Attention
Q5. Was new ssh session established?
2.3.5.3. Task 3 – Check DNS and NTP are configured properly¶
- Verify the DNS and NTP configuration and test DNS.
- Go to System >> Configuration >> Device >> General and review the DNS and NTP setting
- In BIG-IP command line terminal window (window 2) test DNS from the CLI or TMSH enter:
- dig pool.ntp.org