Problems with FreeBSD
joompz at gmail.com
Tue Nov 4 15:14:02 PST 2008
It's work! With the -C option work fine! :-)
Now, what I need to do to use it without -C? Do I need to change some
The ssh was executed on Linux:
Linux (ssh -C host) -> ASA <- Internet -> FreeBSD
2008/11/4 Brian Whalen <brian at brianwhalen.net>
> Giorgos Keramidas wrote:
>> On Tue, 4 Nov 2008 11:10:25 -0200, "J MPZ" <joompz at gmail.com> wrote:
>>> Hi Paul,
>>> When my connections freeze, I open the tcpdump in other terminal. If I
>>> something, type "Enter", on the terminal frozen, the tcpdump show
>>> like that:
>>> 11:18:45.526256 IP (tos 0x0, ttl 51, id 651, offset 0, flags [DF],
>>> TCP (6), length: 112) 126.96.36.199.20787 > 188.8.131.52.2264: P
>>> ack 0 win 15136 <nop,nop,timestamp 1556398494 745829191,nop,nop,sack 1
>>> I'm using: tcpdump -nvvv -i ste0 host REMOTE_IP
>> Can you try capturing the connection setup packets, so we can look at
>> the TCP MSS negotiation values? Starting TCPDUMP *before* one of the
>> connections that stall is made should capture that.
>> There may be an intermediate router or firewall that blocks ICMP and
>> ends up breaking path MTU discovery. I've seen TCP connections
>> 'stall' when path-mtu was broken by a setup like this and one of the
>> intermediate routers started dropping TCP packets that were too large
>> for one of its interfaces.
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> Since the result set is so big, something else to try may be invoking the
> ssh connection with compression on, -C is the flag. THis will allow us to
> see if it really isnt working or is just slower than you'd like.
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