201 · Question #231
A BIG-IP Administrator configures a Virtual Server. Users report that they always receive a TCP RST packet to the BIG-IP system when attempting to connect to it. What is the possible reason for this i
The correct answer is B. The virtual server Type is set to Reject. Users receiving TCP RST packets when connecting to a virtual server indicates that the virtual server's 'Type' is configured to 'Reject', causing the BIG-IP system to actively refuse connections.
Question
A BIG-IP Administrator configures a Virtual Server. Users report that they always receive a TCP RST packet to the BIG-IP system when attempting to connect to it. What is the possible reason for this issue?
Options
- AThe virtual server Type is set to Internal
- BThe virtual server Type is set to Reject
- CThe virtual server Type is set to Drop
- DThe virtual server Type is set to Stateless
How the community answered
(44 responses)- A7% (3)
- B89% (39)
- C2% (1)
- D2% (1)
Why each option
Users receiving TCP RST packets when connecting to a virtual server indicates that the virtual server's 'Type' is configured to 'Reject', causing the BIG-IP system to actively refuse connections.
A virtual server Type of 'Internal' is typically for internal traffic processing or management, not for generating TCP RSTs for external client connection attempts.
When a virtual server's 'Type' is set to 'Reject', the BIG-IP system is explicitly configured to refuse connections. For TCP connections, this results in a TCP RST (reset) packet being sent back to the client, matching the reported behavior.
If the virtual server Type is set to 'Drop', the BIG-IP system silently discards incoming connections without sending any response, leading to client timeouts, not RST packets.
'Stateless' is an option typically found in FastL4 profiles that affects connection tracking, not a primary virtual server 'Type' that explicitly dictates RST behavior for connection refusal.
Concept tested: Virtual Server Type configuration and TCP RST behavior
Source: https://techdocs.f5.com/en-us/big-ip-glossary/glossary-term-virtual-server.html
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