so what changed on your box and why did you change it since you were able to ssh?
-----Original Message----- >From: Micha <[EMAIL PROTECTED]> >Sent: Feb 28, 2007 4:48 AM >To: [email protected] >Subject: Re: cant connect, ssh hangs after SSH2_MSG_KEX_DH_GEX_GROUP > >[EMAIL PROTECTED] schrieb: > >> starting a while ago I can no longer ssh into my box anymore. I have tried >> anything I can think of and have no clue anymore. Needless to say that I >> realy need ssh to access my work from remote places. >> >> Problem: >> When I ssh -vvv to my server the connection hangs after >> debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP > >UPDATE: > >I have noticed that portforwarding is some sort of workaround. Since I >can conect from client to box but not the other direction I have set up >a port forwarding for the other direction. > >[EMAIL PROTECTED]:~>$ ssh -R 10000:localhost:22 [EMAIL PROTECTED] > >Even though > [EMAIL PROTECTED]:~> ssh [EMAIL PROTECTED] # doesnt work > >doenst work, using the setup portforwarding it strangle works > [EMAIL PROTECTED]:~> ssh -p 10000 [EMAIL PROTECTED] # works > >I realy appriciate some experts knowledge since this is way to >strange/difficult for me. > >> System: >> I'm using Debian with openssh-server (1:4.3p2-8) >> sshd: OpenSSH_4.3p2 Debian-8, OpenSSL 0.9.8c 05 Sep 2006 >> uname -a: Linux server 2.6.18-3-686 #1 SMP Mon Dec 4 16:41:14 UTC 2006 i686 >> GNU/Linux >> >> What I tried: >> I have recompiled a recent openssh from source on the client with now >> success. (I have no root access on the client and they use an older version >> of ssh) >> >> I have booted grml (grml.org, a live linux cd) on my server and tried to >> connect to the sshd running from cd in order have a fresh sshd on my server. >> >> I have purged and reinstalled openssh-server to get a fresh configuration. >> >> I _can_ connect with putty on a windows client. >> >> I hope you can help me, and thank you for your consideration. >> >> === Client Log === >> >> [EMAIL PROTECTED]:~> ssh -vvv [EMAIL PROTECTED] >> OpenSSH_3.8.1p1 Debian-8.sarge.6, OpenSSL 0.9.7e 25 Oct 2004 >> debug1: Reading configuration data /etc/ssh/ssh_config >> debug2: ssh_connect: needpriv 0 >> debug1: Connecting to server [x.x.x.x] port 22. >> debug1: Connection established. >> debug1: read PEM private key done: type DSA >> debug1: read PEM private key done: type RSA >> debug1: identity file /home/mw/.ssh/identity type -1 >> debug1: identity file /home/mw/.ssh/id_rsa type -1 >> debug1: identity file /home/mw/.ssh/id_dsa type -1 >> debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3p2 >> Debian-8 >> debug1: match: OpenSSH_4.3p2 Debian-8 pat OpenSSH* >> debug1: Enabling compatibility mode for protocol 2.0 >> debug1: Local version string SSH-2.0-OpenSSH_3.8.1p1 Debian-8.sarge.6 >> debug1: SSH2_MSG_KEXINIT sent >> debug1: SSH2_MSG_KEXINIT received >> debug2: kex_parse_kexinit: >> diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 >> debug2: kex_parse_kexinit: ssh-rsa,ssh-dss >> debug2: kex_parse_kexinit: >> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,[EMAIL >> PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr >> debug2: kex_parse_kexinit: >> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,[EMAIL >> PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr >> debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL >> PROTECTED],hmac-sha1-96,hmac-md5-96 >> debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL >> PROTECTED],hmac-sha1-96,hmac-md5-96 >> debug2: kex_parse_kexinit: none,zlib >> debug2: kex_parse_kexinit: none,zlib >> debug2: kex_parse_kexinit: >> debug2: kex_parse_kexinit: >> debug2: kex_parse_kexinit: first_kex_follows 0 >> debug2: kex_parse_kexinit: reserved 0 >> debug2: kex_parse_kexinit: >> diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 >> debug2: kex_parse_kexinit: ssh-rsa,ssh-dss >> debug2: kex_parse_kexinit: >> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[EMAIL >> PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr >> debug2: kex_parse_kexinit: >> aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,[EMAIL >> PROTECTED],aes128-ctr,aes192-ctr,aes256-ctr >> debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL >> PROTECTED],hmac-sha1-96,hmac-md5-96 >> debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,[EMAIL >> PROTECTED],hmac-sha1-96,hmac-md5-96 >> debug2: kex_parse_kexinit: none,[EMAIL PROTECTED] >> debug2: kex_parse_kexinit: none,[EMAIL PROTECTED] >> debug2: kex_parse_kexinit: >> debug2: kex_parse_kexinit: >> debug2: kex_parse_kexinit: first_kex_follows 0 >> debug2: kex_parse_kexinit: reserved 0 >> debug2: mac_init: found hmac-md5 >> debug1: kex: server->client aes128-cbc hmac-md5 none >> debug2: mac_init: found hmac-md5 >> debug1: kex: client->server aes128-cbc hmac-md5 none >> debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent >> debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP >> -- and it hangs here and stays forever >> >> === Server Log === >> >> server:~# /usr/sbin/sshd -D -d -d -d -e >> debug2: load_server_config: filename /etc/ssh/sshd_config >> debug2: load_server_config: done config len = 638 >> debug2: parse_server_config: config /etc/ssh/sshd_config len 638 >> debug1: sshd version OpenSSH_4.3p2 Debian-8 >> debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key. >> debug1: read PEM private key done: type RSA >> debug1: private host key: #0 type 1 RSA >> debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key. >> debug1: read PEM private key done: type DSA >> debug1: private host key: #1 type 2 DSA >> debug1: rexec_argv[0]='/usr/sbin/sshd' >> debug1: rexec_argv[1]='-D' >> debug1: rexec_argv[2]='-d' >> debug1: rexec_argv[3]='-d' >> debug1: rexec_argv[4]='-d' >> debug1: rexec_argv[5]='-e' >> debug2: fd 3 setting O_NONBLOCK >> debug1: Bind to port 22 on ::. >> Server listening on :: port 22. >> debug2: fd 4 setting O_NONBLOCK >> debug1: Bind to port 22 on 0.0.0.0. >> >> debug3: fd 4 is not O_NONBLOCK >> debug1: Server will not fork when running in debugging mode. >> debug3: send_rexec_state: entering fd = 7 config len 638 >> debug3: ssh_msg_send: type 0 >> debug3: send_rexec_state: done >> debug1: rexec start in 4 out 4 newsock 4 pipe -1 sock 7 >> debug3: recv_rexec_state: entering fd = 5 >> debug3: ssh_msg_recv entering >> debug3: recv_rexec_state: done >> debug2: parse_server_config: config rexec len 638 >> debug1: sshd version OpenSSH_4.3p2 Debian-8 >> debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key. >> debug1: read PEM private key done: type RSA >> debug1: private host key: #0 type 1 RSA >> debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key. >> debug1: read PEM private key done: type DSA >> debug1: private host key: #1 type 2 DSA >> debug1: inetd sockets after dupping: 3, 3 >> debug3: Normalising mapped IPv4 in IPv6 address >> Connection from 139.18.9.23 port 4381 >> debug1: Client protocol version 2.0; client software version OpenSSH_3.8.1p1 >> Debian-8.sarge.6 >> debug1: match: OpenSSH_3.8.1p1 Debian-8.sarge.6 pat OpenSSH_3.* >> debug1: Enabling compatibility mode for protocol 2.0 >> debug1: Local version string SSH-2.0-OpenSSH_4.3p2 Debian-8 >> debug2: fd 3 setting O_NONBLOCK >> debug3: privsep user:group 103:65534 >> debug1: permanently_set_uid: 103/65534 >> debug1: list_hostkey_types: ssh-rsa,ssh-dss >> debug1: SSH2_MSG_KEXINIT sent >> debug2: Network child is on pid 4713 >> debug3: preauth child monitor started >> debug3: mm_request_receive entering >> >
