port forwarding to linux virtual machine

I am trying to run an experimental server using port 3838 on CentOS in a Parallels virtual machine. The idea is to have requests coming to the host IP on port 3838 be forwarded to the virtual machine's IP address on port 3838. I have tried adding the following the rule to the port forwarding rule under

Parallels Preferences -> Advanced -> Network Change Settings

port on mac port type virtual machine's IP address destination port
3838 TCP 10.211.54.4 3838

However, this is not working. I can still reach the host IP on port 80, which I want to keep in tact, so at least I haven't broken anything I want to keep. Am I barking up the wrong tree here?

 

Hello kwythers,

Please provide us the steps which you tried to perform along with the commands, so we could check it for you.

 

Thanks.

1. under parallels "preferences" I advanced, I checked "enable IPv4 DHCP, Start address 10.211.55.20, end address: 10.211.55.254, and subnet mask 255.255.255.0

2. added port forwarding rule as 388, TCP, 10.211.55.2

3. ran the "setup" too -> networkd config -> device config, for eth0 l used static IP as 10.211.55.2, netmask of 255.255.255.0 and gateway IP of 10.255.55.20

running ifconfig gives:

[kirkw@localhost ~]$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1C:42:5B:86:04
inet addr:10.211.55.22 Bcast:10.211.55.255 Mask:255.255.255.0
inet6 addr: fdb2:2c26:f4e4:0:21c:42ff:fe5b:8604/64 Scope:Global
inet6 addr: fe80::21c:42ff:fe5b:8604/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29335 errors:0 dropped:0 overruns:0 frame:0
TX packets:8337 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:41246862 (39.3 MiB) TX bytes:513807 (501.7 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:903 errors:0 dropped:0 overruns:0 frame:0
TX packets:903 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2416606 (2.3 MiB) TX bytes:2416606 (2.3 MiB)

virbr0 Link encap:Ethernet HWaddr 52:54:00:6E:8F:0F
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

I can connect to the server from within centos if I type into firefox 10.211.55.2:3838, but I can not reach the server from outside cnetos.

Thanks agian for any suggestions.