Sudden onset ftp problem - can't ftp through vpn

[poma]

On 02.07.2014 22:43, Bill Oliver wrote:
> On Wed, 2 Jul 2014, Rick Stevens wrote:
>
>>
>> I hit a similar thing on my F19 machine. The fix I had was (as root):
>>
>> 	echo "0" >/proc/sys/net/ipv4/tcp_sack
>>
>> (I did this on the advice of our in-house network guru) I then added
>> these to the end of my /etc/sysctl.conf file so it gets set on the next
>> boot as well:
>>
>> 	 # Speed up FTP uploads...
>> 	 net.ipv4.tcp_sack = 0
>>
>> Seems to have solved the problem. It appears that there are some routers
>> or firewalls or VPNs that screw up the SACK on some transactions. Try
>> the first thing (the echo command) and see if it helps. If so, then do
>> the sysctl.conf stuff.
>
> No joy.  I have a support call into my virtual machine vendor.  I'll see
> if they have any words of wisdom.
>
>
> billo
>

Which virtual machine vendor?


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