ssh session freezes in dapper

hemant gethemant at gmail.com
Mon Feb 5 14:36:30 UTC 2007


On 2/3/07, hemant <gethemant at gmail.com> wrote:
> Hi,
>
> When I connect to remote machines from my local dapper workstation,
> after sometime my SSH session hangs without any apparent reason.
>
> I have literally searched internet for hours for a solution and people
> seem to have following reasons for this:
>
> - Poor DNS
> - Packet fragmentation and firewall problem, and bulk text freezes the session
> - Inactivity timeout.
>
> Although I won't call my DNS to be solid, but when I connect to the
> same machines using putty from Windows(which uses zonealarm firewall),
> ssh sessions work fine and doesn't hang as they hang in Linux.
>
> Many people had ssh session hangs, when the command entered in remote
> session transferred large amount of text. I can assure, you guys that,
> its not the case here. Even doing, small chunks transfer session
> freezes.
>
> And of course, its not inactivity timeout, it happens, when i would be
> in middle of entering some command.
>
> Also, interesting fact is, many of my collegues within same intranet
> complained about their putty throwing "garbled network data", but
> since I had zonealarm on, I didn't face any problems in
> Windows.(zonealarm seems to be ordering bytes or something like that
> in Windows and for me, I never get session hangs in Windows when using
> putty)
>
> I am literally frustrated here and would love any solution/points.(I
> hate booting into Windows, for working on remote machines)
>
> Also I am running firestarter on my machine. I also tried setting up
> MTU = 576 using ifconfig eth0 mtu 576, but doesn't seem to have any
> impact.
>
>
> eth0      Link encap:Ethernet  HWaddr -----------------
>           inet addr:10.0.0.187  Bcast:10.10.2.255  Mask:255.255.255.0
>           inet6 addr: fe80::215:f2ff:fe91:dc77/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:46986 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:19000 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:21881243 (20.8 MiB)  TX bytes:2177529 (2.0 MiB)
>           Interrupt:217 Base address:0x2000
>
> 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:5229 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:5229 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:2434670 (2.3 MiB)  TX bytes:2434670 (2.3 MiB)
>
> Linux xaos 2.6.15-27-386 #1 PREEMPT Fri Dec 8 17:51:56 UTC 2006 i686 GNU/Linux

Anyone?


-- 
gnufied
-----------
There was only one Road; that it was like a great river: its springs
were at every doorstep, and every path was its tributary.




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