Error connecting to an Apache svn server remotely

I set up an apache SVN server on an Opensuse Linux server within the
university department network. Access to it from within the university
network is completely fine. One day when I tried to access from outside the
university using the linux svn client, I got one of these two errors
(nondeterministic):

kzhu@tux:~$ svn list http://www.xxx.edu/mysvn

svn: OPTIONS of 'http://www.xxx.edu/mysvn': Could not parse response status
line. (http://www.xxx.edu)

kzhu@tux:~$ svn list http://www.www.edu/mysvn

svn: PROPFIND of '/mysvn': Could not read status line: connection was closed
by server. (http://www.xxx.edu )

I looked at the apache access log on the server, and see these:

xxx.xxx.xxx.xxx - - [15/May/2011:13:26:04 +0800] "OPTIONS /mysvn HTTP/1.1"
401 1286 "-" "SVN/1.6.15 (r1038135) neon/0.25.5"

xxx.xxx.xxx.xxx - kzhu [15/May/2011:13:26:05 +0800] "OPTIONS /mysvn
HTTP/1.1" 200 188 "-" "SVN/1.6.15 (r1038135) neon/0.25.5"

I also looked at the access log of successful access to the serve from
within the university network, I also see these two lines, but there are
additional lines that indicates the successful retrieval of file listing:

yyy.yyy.yyy.yyy - - [15/May/2011:13:29:34 +0800] "OPTIONS /mysvn HTTP/1.1"
401 1286 "-" "SVN/1.6.16 (r1073529) neon/0.29.3"

yyy.yyy.yyy.yyy - kzhu [15/May/2011:13:29:34 +0800] "OPTIONS /mysvn
HTTP/1.1" 200 188 "-" "SVN/1.6.16 (r1073529) neon/0.29.3"

yyy.yyy.yyy.yyy - kzhu [15/May/2011:13:29:34 +0800] "PROPFIND /mysvn
HTTP/1.1" 207 647 "-" "SVN/1.6.16 (r1073529) neon/0.29.3"

yyy.yyy.yyy.yyy - kzhu [15/May/2011:13:29:34 +0800] "PROPFIND
/mysvn/!svn/vcc/default HTTP/1.1" 207 399 "-" "SVN/1.6.16 (r1073529)
neon/0.29.3"

yyy.yyy.yyy.yyy - kzhu [15/May/2011:13:29:34 +0800] "PROPFIND
/mysvn/!svn/bln/97 HTTP/1.1" 207 452 "-" "SVN/1.6.16 (r1073529) neon/0.29.3"

... omitted more lines.

I looked at the firewall on the opensuse server (in yast) and make sure that
the firewall is turned off, but it doesn't help! I also tried accessing from
different places outside the university and I got the same error. I'm out of
ideas! Please help!!

 
Received on 2011-05-15 07:59:28 CEST