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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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 Posted: Tue Oct 24, 2006 3:38 pm Post subject: ssh sessions timeout and abort |
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I am attempting to ssh into my laptop at home. however, if I can get on (usually it just says the session times out), I can log on and within about 20 seconds, the session always sends a "Network error: Software caused a connection to abort" (using putty.exe). Now, previously this has not been a problem.
I have recently done an emerge -e system && emerge -e world to fully upgrade my GCC to 4.1.1.
There was one time while compiling that the system had a HARD lock up or freeze and required a power cycle to get it working again.
I have about 20 seconds before the system crashes and takes a few minutes to get ssh to respond again.
Can anyone help me learn how to troubleshoot this problem?
Thanks!
Could this have to do with me changing my sshd_config or ssh_config settings to allow x forwarding?
I changed the following lines:
| Code: | in sshd_config
X11Forwarding yes
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| Code: | in ssh_config
ForwardAgent yes
ForwardX11 yes
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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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| Posted: Tue Oct 24, 2006 4:34 pm Post subject: possible attacks |
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okay...BAD stuff is happening!!!
| Code: | Oct 24 07:21:13 [sshd] Invalid user liberty from 69.26.172.146
Oct 24 07:21:13 [sshd] reverse mapping checking getaddrinfo for unknown.xeex.net
failed - POSSIBLE BREAK-IN ATTEMPT!
Oct 24 07:21:14 [sshd] Invalid user alan from 69.26.172.146
Oct 24 07:21:14 [sshd] reverse mapping checking getaddrinfo for unknown.xeex.net
failed - POSSIBLE BREAK-IN ATTEMPT!
Oct 24 07:21:15 [sshd] Invalid user wilfe from 69.26.172.146
Oct 24 07:21:15 [sshd] reverse mapping checking getaddrinfo for unknown.xeex.net
failed - POSSIBLE BREAK-IN ATTEMPT!
Oct 24 07:21:16 [sshd] Invalid user ruthy from 69.26.172.146
Oct 24 07:21:16 [sshd] reverse mapping checking getaddrinfo for unknown.xeex.net
failed - POSSIBLE BREAK-IN ATTEMPT!
Oct 24 07:21:18 [sshd] Invalid user oriana from 69.26.172.146
Oct 24 07:21:18 [sshd] reverse mapping checking getaddrinfo for unknown.xeex.net |
What is going on? How can I stop this? |
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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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| Posted: Tue Oct 24, 2006 5:51 pm Post subject: |
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okay, these attempts seem to have stopped. However, the system still kicks me off SSH about 20 seconds after logging in.
I cannot think of why this would be happening. Any ideas?
Thanks.
Should I just turn the computer off until I get home and can try to play with it in person? what can I do to figure out what is going on? thanks. |
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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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| Posted: Wed Oct 25, 2006 1:11 am Post subject: |
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okay, it apears to be a router problem. I can ssh into my computer from within my router's domain 192.168.1.* and everything is stable.
BUT, if I ssh to the external IP address that is routed to my computer's ssh port 22, I get the flakey behaviour discussed above.
Any idea how to fix it? I just recently updated my router's firmware: it's a D-Link DI-524
Has anyone else had any trouble like this? |
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joroy
n00b
Joined: 05 Dec 2003
Posts: 6
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| Posted: Thu Oct 26, 2006 6:36 pm Post subject: |
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| swingkyd wrote: | okay, it apears to be a router problem. I can ssh into my computer from within my router's domain 192.168.1.* and everything is stable.
BUT, if I ssh to the external IP address that is routed to my computer's ssh port 22, I get the flakey behaviour discussed above.
Any idea how to fix it? I just recently updated my router's firmware: it's a D-Link DI-524
Has anyone else had any trouble like this? |
I have a similar problem since a few days.
I cannot say the problem is at every 20 secondes, but the connection is very unstable.
I always have the message "Read from remote host xxx.xxx.xxx: Connection reset by peer
Connection to xxx.xxx.xxx closed.
I have to wait a couple a minutes before I can reconnect to the server.
The problem appear since my last update so I suspect that one of these package have a problem
app-arch/cabextract-1.1
app-arch/gzip-1.3.5-r9
app-arch/mt-st-0.7-r1
app-arch/zip-2.31-r1
app-crypt/gnupg-1.4.5-r2
app-portage/portage-utils-0.1.20
app-shells/bash-3.1_p17
dev-java/blackdown-jre-1.4.2.03-r13
dev-java/java-config-1.3.7
dev-java/java-config-2.0.30
dev-java/java-config-wrapper-0.12-r1
dev-java/sun-jdk-1.5.0.08
dev-lang/python-2.4.3-r4
dev-libs/libtasn1-0.3.5
dev-libs/lzo-2.02-r1
dev-libs/nspr-4.6.3
dev-libs/nss-3.11.3
dev-libs/openssl-0.9.8d
dev-perl/HTML-Parser-3.55
dev-perl/HTML-Tree-3.21
dev-perl/IO-Socket-SSL-0.99.9
dev-perl/Net-DNS-0.58
dev-perl/Net-IP-1.25
dev-python/numpy-1.0_rc1
dev-util/subversion-1.3.2-r3
net-firewall/iptables-1.3.5-r4
net-ftp/proftpd-1.3.0-r2
net-libs/gnutls-1.4.4-r1
net-libs/libwww-5.4.0-r6
net-misc/neon-0.26.1-r1
net-misc/netkit-rsh-0.17-r7
net-misc/openssh-4.3_p2-r5
perl-core/digest-base-1.15
perl-core/Test-Simple-0.64
perl-core/Time-HiRes-1.90
sys-apps/baselayout-1.12.5-r2
sys-apps/busybox-1.2.1
sys-apps/coldplug-20040920-r1
sys-apps/eject-2.1.5
sys-apps/groff-1.19.2-r1
sys-apps/help2man-1.36.4
sys-apps/man-pages-2.39
sys-apps/portage-2.1.1-r1
sys-apps/sed-4.1.5
sys-devel/binutils-config-1.9-r2
sys-devel/bison-2.2
sys-devel/gcc-config-1.3.13-r4
sys-devel/gettext-0.15
sys-devel/gnuconfig-20060702
sys-devel/make-3.81
sys-libs/cracklib-2.8.9-r1
sys-libs/db-4.2.52_p4-r2
sys-libs/libutempter-1.1.4.1
sys-libs/ncurses-5.5-r3
sys-libs/timezone-data-2006n
virtual/jdk-1.5.0
virtual/jre-1.5.0
virtual/opengl-7.0
virtual/perl-digest-base-1.15
virtual/perl-Test-Simple-0.64
virtual/perl-Time-HiRes-1.90
If I solve the problem I let you know! |
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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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| Posted: Thu Oct 26, 2006 7:08 pm Post subject: |
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joroy,
From within my own network I can ssh into my machine without it happening. It only seems to be when I'm coming in from outside the network. That's why I assumed it was the router as I had recently updated to the 5.10 firmware for the DI-524.
There were some DoS problems with OpenSSH recently but I hope that is not the problem.
http://www.gentoo.org/security/en/glsa/glsa-200609-17.xml |
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swingkyd
Guru
Joined: 13 Jan 2005
Posts: 334
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| Posted: Tue May 27, 2008 4:22 pm Post subject: |
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I'm sorry for resurrecting this again...but I'm still having the same problem.
Any idea why my connection would be dropped every 20 seconds or so? |
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Networking & Security
