IPMI server not responding

[aryans90]

Conpot is running in a container and ipmi server is listening on port 6230 but it is not responding back.
On running ipmitool command:
ipmitool -I lanplus -H <IP_ADDRESS> -U <username> -P <password> user list
Output:
Error: Unable to establish IPMI v2 / RMCP+ session

Error in conpot logs:
2022-12-29 09:27:32,445 New IPMI traffic from ('10.16.12.35', 55604)
Traceback (most recent call last):
File "src/gevent/greenlet.py", line 908, in gevent._gevent_cgreenlet.Greenlet.run
File "/home/conpot/.local/lib/python3.10/site-packages/gevent/baseserver.py", line 34, in _handle_and_close_when_done
return handle(*args_tuple)
File "/home/conpot/.local/lib/python3.10/site-packages/conpot/protocols/ipmi/ipmi_server.py", line 100, in handle
self.session = FakeSession(address[0], "", "", address[1])
File "/home/conpot/.local/lib/python3.10/site-packages/conpot/protocols/ipmi/fakesession.py", line 55, in init
self._initsession()
File "/home/conpot/.local/lib/python3.10/site-packages/pyghmi/ipmi/private/session.py", line 623, in _initsession
self.logoutexpiry = _monotonic_time() + self._getmaxtimeout()
File "/home/conpot/.local/lib/python3.10/site-packages/pyghmi/ipmi/private/session.py", line 756, in _getmaxtimeout
while incrementtime < self.maxtimeout:
AttributeError: 'FakeSession' object has no attribute 'maxtimeout'
2022-12-29T09:27:32Z <Greenlet at 0x7f34fd24c400: _handle_and_close_when_done(<bound method IpmiServer.handle of <conpot.protoco, <bound method BaseServer.do_close of <DatagramServ, (b'\x06\x00\xff\x07\x00\x00\x00\x00\x00\x00\x00\x0)> failed with AttributeError

After setting maxtimeout manually, it still doesn't repsonds back to ipmitool command.

To debug this:
tcpdump -i any port 6230
09:27:16.397931 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:17.403425 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:19.409200 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:22.416080 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:26.425055 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:27.430877 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:29.438140 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23
09:27:32.445580 eth0 In IP 10.16.12.35.55604 > 00d841657a88.6230: UDP, length 23

As it is clearly visible, packets are coming in but there are no outgoing packets.

To Reproduce
Steps to reproduce the behavior:

1. Run the conpot server with default configuration.
2. Execute the ipmitool tool command as given in the line 3 of the bug description.
3. Error will be shown: Error: Unable to establish IPMI v2 / RMCP+ session

Expected behavior
Should return the user list specified in ipmi.xml configuration file.

Desktop (please complete the following information):

• OS: Ubuntu
• Version 22
• Container with base image ubuntu