Hi all,
I'm running Bering as my firewall. I have 2 Intel 100Mb NIC's in the machine (PCI). My uplink is a 1Gb link via cisco router etc..
I've been running some speed test and can only seem to manage ~500kB/s per connection downloading from a nearby ftp server. I can open multiple connections to the same ftp host but they all seem to only achive ~500kB/s is there anything in Bering that could be causing this?
Nothing I can think of. But let's first be sure we are communicating properly. I read you to be saying:
1. Each connection from this "nearby" ftp server to a host on your LAN runs at 4 Mbps (500 kBps, where b=bit and B=byte).
2. If you open multiple simultaneous ftp connections between the same host and the same "nearby" server, each connection runs at 4 Mbps. So you can achieve, say, 40 Mbps of througput with 10 simultaneous connections.
3. The "nearby" ftp server is sufficiently "nearby" that the only relevant connection number is the 1 Gbps link from the LEAF router to the Cisco, not any of the "etc." on the other side of the Cisco.
If all that is true, I would guess that the ftp server somehow limits the speed of any one connection it serves. I would investigate whether this behavior is specific to this one "nearby" ftp server or if it affects other transfers as well.
In practice, I see 100 Mbps NICs in and of themselves as able to support about 50-60 Mbps of throughput. (Just to be sure of this, I just did a couple of LAN ftp transfers here, and they ran at about 50 Mbps.)
Your hardware details, omitted here, say that you aren't using the latest technology, but it should be plenty fast for dedicated routing with a NATing firewall in place.
Does the firewall/ftp_conntrack module cause this kind of thing?[...]
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