Date: Sat, 28 May 2005 14:46:01 +0800 From: Xin LI <delphij@frontfree.net> To: Jovan Ross <jovanross@msn.com> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 5.4 Dropping off Network Message-ID: <1117262762.648.17.camel@spirit> In-Reply-To: <BAY107-F866C0BE7F335BA21587C9A4000@phx.gbl> References: <BAY107-F866C0BE7F335BA21587C9A4000@phx.gbl>
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--=-mFwsn6iJz9wKhA2cAxB9 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, Jovan, =E5=9C=A8 2005-05-27=E4=BA=94=E7=9A=84 13:16 -0400=EF=BC=8CJovan Ross=E5=86= =99=E9=81=93=EF=BC=9A > I am experiencing problems keeping FreeBSD 5.4 connected. I have uptimes = of=20 > 5 or 6 days - sometimes 10 or 11, then, without freezing the machine=20 > totally, it stops responding to network traffic. I get DOS attacked every= =20 > once and a while and my logs are also filled with failed auths from passw= ord=20 > crackers but it seems that I have the worst effects from it. I don't have= =20 > any web traffic yet b/c this is my development machine. I have portsentry= =20 > with a default open firewall config running. I even took the firewall &=20 > portsentry off and I get the same problem. I am new to FreeBSD and have d= one=20 > the standard security procedures that new ones are advised to do: [snip] Your configuration looks reasonable to me. Would you please give us a look at your kernel configuration? Typically a SSH scan of password won't cause the problem you are describing, and this is likely to indicate some other problems, like: - Firewall dynamic rules table filled. - Some critical resources has been exhausted - Maybe some bugs in network adapter driver You may want to try "netstat -m", and ping other nodes when the networking is not working properly. These information would be helpful for tracking down the problem. Also, a /var/run/dmesg.boot would give us some information about your hardware. Cheers, --=20 Xin LI <delphij delphij net> http://www.delphij.net/ --=-mFwsn6iJz9wKhA2cAxB9 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQBCmBOp/cVsHxFZiIoRAvDCAJ9oMGIwRcT4/PB0JNRvb9VsiJSHhgCfRo3b HCeiBgMyG4AoUMrQuWo19Es= =W+zv -----END PGP SIGNATURE----- --=-mFwsn6iJz9wKhA2cAxB9--
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