Slow internet connection when connected to opnsense box

[McKay]

Hello all, Newbie here!! 

So anyways, I just installed opnsense 19.7 FreeBSD on an ubuntu 14.4 system inside a virtual box running version 6.0, I have 2 adapters both in bridge mode (adapter 1: eth0 bridge WAN connection, adapter 2 eth1 bridge LAN connection. I know everybody says to setup adapter 2 as internal network or host only but those seem to only work when accessed through another VM and I wanted to access the opnsense box through my computer connected either directly to LAN or via a switch connected to LAN. If this is wrong please advise as how to setup and access from internal network on my laptop outside of virtualbox, if this dual bridge is ok and safe then also would be great to hear lol. My WAN connection is a 1GB NIC connection directly on the motherboard and my LAN is a 100MB ethernet to USB NIC Linksys USB100m dongle. My internet comes in via a fiber optic to the house or "ONT" and transfers from there to my ATT RGW/modem via ethernet, sent directly to my opnsense with a static IP NO DHCP connection with all ports open.  But what I am experiencing is when Im connected to my LAN side either with direct ethernet or from my wireless router connected to the switch, I only get a max of 15 MB UP/DN as well as when connected to OpenVPN same speeds, as soon as I disconnect and have direct connection to my ATT RGW I get 900+ up/dn. Also when I run the iperf I get a 900 mb download and 6GB bitrate showing. Any help on this issue, I have spent hours scanning the internet till my eyes were crossed trying to figure this out and everyone goes to disable checksome offload, I did ALL that and some to no avail. I now waits for the great gods of opnsense to speak up.

Thank you all, and if  you need any other info feel free to ask.

[Sirius1]

I'm running OPNSense on a physical box, not virtual, so can't  help with, and would defer to others on that topic for setup and security concerns.

But, I think one of the keys to your issue could be this: "...my LAN is a 100MB ethernet to USB NIC Linksys USB100m dongle..." So first, that's a major performance limitation, and could also be a compatibility issue. You don't specify hardware, are you running on a laptop or desktop/PC? Do you have the option to go with a PCIE expansion card?

I did in fact run OPNSense on a laptop with a USB 2.0 Gigabit adapter (ASIX-based) for nearly 2 years. That was good up to USB 2.0 speeds, and enough for my 150Mbit connection. It works when it works, but when it doesn't, well, you get tired of fighting it. This past summer I switched to a small form factor PC with an old HP branded Intel chipset, dual-port Gigabit PCIE card HP NC360T. There are many old server-class cards for less than or around 20USD on Ebay. Search the posts here and you'll see many recommendations to go with Intel-based chipsets with the Free/HardenedBSD base of OPNSense. My new install has been error-free since going to the Intel-based card.

[McKay]

Thank you for the reply Sirius1, I had some suspect that it may be the USB100M and maybe Im wrong on this but the LAN side talking through the USB100M should only be sending data through my switch, if Im connected via VPN it should be talking internally through the WAN to the box and not hitting the LAN USB100M to slow speeds down right? So this is how Im seeing it basically ( VPN comes in through intetnet WAN --> pfsense internally routed ---> back out through WAN on VPN)?!? As for my machine running opnsense, Im running my box on a desktop PC with 16GB ram, AMD A10-7850K APU with Radeon R7 graphics X4, OS type 64-bit. On the box VM I have 2 cores, with 4 GB of ram dedicated to the VM with opnsense. Im eventually going to upgrade my NIC card to a dual-port Gigabit PCIE card, but I figured for now I should at least be able to get 100 MB connected directly to the box with the USB100M. Its an old dongle Ive had for 10+ years, maybe its crap lol. Also as for the Free/HardenedBSD base of OPNSense, is that another download other than the one at https://opnsense.org/download/ cause this is the one I downloaded and ran with AMD64 DVD version.

Once again THANK YOU for the reply and I hope to hear more!