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• change default username when ssh to another pc

  - by Tom

  When I ssh between different pcs I can omit my username (tom) and just type ssh pc_name instead of ssh tom@pc_name I like this feature, and have got into the habit of using it. Unfortunately, on one of my computers I went for the user name tommy. Everytime I connect to this computer I forget to write tommy@creative_pc and wonder why my password doesn't work. Is there a way to tell ssh what user name to use when the username is omitted? Edit: Just found the following question that is similar: How to make ssh log in as the right user? It didn't come up on my initial search.

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• Able to connect by SSH, but not x2go

  - by Mike

  I am having trouble connecting to a remote server with X2GO using a DSA key. Connecting works fine over SSH, but when I try to connect with X2GO, it goes immediately to the username/password box and doesn't want to use the private key I specify in the options. If I select "Try auto login" it appears to try to connect and then I get the following error: No public key matched Access denied. Authentication that can continue: publickey It was working previously, but I reinstalled the client OS and since then I am unable to connect. I copied all of the SSH keys over from the previous installation. I also tried deleting my ~/.ssh/known_hosts file and adding the key to ssh-agent with no success, but the key is definitely added correctly: $ ssh-add -l 1024 b9:3d:e5:ef:48:ea:fc:c6:6e:45:89:b5:35:e7:58:39 server.com_dsa (DSA) Note, if I enable password authentication on the server, I can connect fine, however I would like to use publickey. Any ideas how I can connect with public key authentication?

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• Get Kerberos ticket with SSH

  - by Joel

  I'd like to get a Kerberos 5 ticket when ssh-ing to get to a fully-automated login solution. Typically, you use kinit first and then ssh: > kinit user@DOMAIN user@DOMAIN's Password: (enter password) > ssh user@host (successful login) I'd like to simply run ssh user@host and automatically check for a Kerberos ticket. If one isn't there, I'd like it to get a ticket and then log in. > kdestroy > ssh user@host user@DOMAIN's Password: (enter password) (successful login) (log off of host) > klist (show ticket info) I'd like this to be configured on a per-host basis, as not every host I log into supports Kerberos.

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• allow SSH to bypass VPN on OSX mavericks, openvpn, pf

  - by zycho42

  My home computer connects to the internet through an OpenVPN connection. However, I would like to be able to connect to my home computer from outside over ssh. Ssh is set up and working, but when I connect to the vpn ssh is only accessible from inside my home network. I figure what's going wrong is my router forwards incoming ssh connections to my mac, but then my mac replies over the vpn, so the connection from outside times out. I've got pf set up for a couple of other things, but I can't figure out how to let the ssh replies bypass the vpn using pf. I've come across other solutions that use ip tables, routing tables and rules, but I can't figure out how to set that up on mavericks. I've been searching for this for a while now but I haven't found a working solution. Any help would be greatly appreciated!

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• SSH keys fail for one user

  - by Eli

  I just set up a new Debian server. I disabled root SSH and password auth, so you've gotta use a key file. For my primary user, everything works exactly as expected. I used ssh-keygen -t dsa and got myself a public and private key. Put one in authorized keys, put the other in a pem file locally. I wanted to create a user that I can deploy things with, so I did basically the same process. I addusered it, made a .ssh folder, ran ssh-keygen -t dsa (I also tried RSA), put the keys in their appropriate locations. No luck. I'm getting a Permission denied (publickey) error. When I use the exact same keys as the account that works, same error. When I enable password authentication, I can log in via SSH with the password. How do I debug this?

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• Confusion over terminology SSH, Shell, Terminal, Command Prompt and Telnet

  - by byronyasgur

  I don't usually use SSH if I can get away with it, but if I have to I do of course, and I've seemingly done this for years while still managing to remain slightly confused about these different terms ... from my basic research, this is my understanding, could someone verify/correct this? Telnet ... before SSH, not secure SSH ... ( secure shell ) the general name of the system/protocol Shell ... short name for SSH Command Line/Command Prompt ... the windows version Terminal ... the Unix version, also used by apple. Two further questions: What is the Linux version commonly called, is it just called SSH ? What is bash ?

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• MAC OSX 10.5.8 need to save rsync password with ssh-copy-id

  - by Brady

  Hello all, I'll start by saying I'm very new to MAC but comfortable in using the command line thanks to using a linux a lot. I currently have rsync setup to run between a MAC OSX 10.5.8 server to a Linux Centos 5.5 Server. This is the command I'm running on the MAC server: rsync -avhe ssh "/Path/To/Data" [email protected]:data/ As it does it prompts for a password but I need it to save the password. After looking around I need to use: ssh-keygen -t dsa save the passkey and then move it over to the Linux server using: ssh-copy-id -i .ssh/id_dsa.pub [email protected] But ssh-copy-id doesnt seem to exist on the MAC server. How do I copy this key over? I've tried searching for the answer myself but the help seems to be all over the place for this.. Any help is greatly appreciated. Scott

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• Simple SSH public/private key question

  - by James R.

  I am trying to learn this instead of just following guides so I can recommend proper actions when people do ask (and they do). Here is what I got down. First, generate both key with command such as this: ssh-keygen -b 2048 -t rsa -C comment -f ~/.ssh/id_rsa Then you push the public part of the key into authorized_keys2 file cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys2 (and then chmod it to 600 or similar) And you download the private key to your computer (id_rsa) and feed that in to Putty to be read and authenticate. Are these the correct steps to setting this public/private key authentication for passwordless login to SSH?

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• ssh port forwarding / security risk

  - by jcooper

  Hi there, I want to access a web application running on a web server behind my office firewall from an external machine. We have a bastion host running sshd that is accessible from the Internet. I want to know if this solution is a bad idea: Create an account on the bastion host with shell=/bin/false and no password ('testuser') Create a ssh RSA key on the external machine Add the public RSA key to the testuser's authorized_keys file ssh to the bastion host from the external host using: ssh -N 8888:targethost:80 run my tests from the external host shut down the ssh tunnel I understand that if my RSA private key were compromised then someone could ssh to the bastion host. But are there other reasons this solution is a bad idea? thank you!

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• X11 Forwarding works on Windows with Xming and Putty, but not with ssh command line

  - by seaders

  I have a micro Amazon instance the I want to use for testing and everything is going fine until the title. If I set up all the info in PuTTy, open it up and run 'xclock', all runs perfectly and it opens on Xming on my local desktop. If, however, I run ssh xxxxxxx.amazonaws.com xclock I get Error: Can't open display: If I run either of ssh xxxxxxx.amazonaws.com -X DISPLAY=localhost:0:0 xclock ssh xxxxxxx.amazonaws.com -Y DISPLAY=localhost:0:0 xclock I get the same again, but just after about a 30 second delay. In .ssh/config in Windows, I do have ForwardX11 yes set, and I really can't think of anything more to get this working. The fact that PuTTy is working perfectly, not no matter what I do on the command line, I get absolutely no joy is driving me crazy. Can I even see the commands PuTTy is running somewhere, to see if it's doing some extra magic? The ssh I'm running in Windows is MinGW32's.

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• Keeping Private SSH Keys Safe

  - by Carmen

  I have a central server where I stored all the private ssh keys to the different machines that I want to ssh to. Currently, only sysadmins have access to this 'central' server. Given the above scenario, I like to ask the following questions: How do you protect your private ssh keys? I read about ssh-agent but I am not sure how to use it or if it can be used in this situation. If a sysadmin leaves and he copies all the private ssh keys, then he has access to all the servers. How do you deal with this situation?

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• How to run sshfs through ssh command?

  - by Koryonik

  I tried to run sshfs through ssh in one command. For example, if I do : $ ssh user@host user@host$ sshfs host:/src /target Everything is ok. Now, if I tried this in one command : ssh -t "sshfs host:/src /target" But not mounted point. By using sshfs debug option, it seems volume is mounted and immediately unmounted when ssh connection ended. I also tried to run sshfs in a login shell, but result is the same when exiting shell : ssh -t "/bin/sh -l -c sshfs host:/src /target && /bin/sh" What's wrong ? Is there one another best way?

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• setting up ssh on minix 3.2

  - by Mark

  I have install MINIX 3.20 on VMware player on LINUX. Now, I am trying to ssh into Minix from the same Linux machine, but I am encountering some problems. First I installed openssh on MINIx then I tried to ssh onto the Minix virtual machine with ssh [email protected] but I got the following output: [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied (publickey,password,keyboard-interactive). I am sure the password I entered is correct, I have tried to ssh into MINIX on MINIX and it worked but not when I tried it from my linux machine. I have followed the steps for setting up ssh from this webpage, but it didn't work as shown above.

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• Kill ssh background process after disconnect / timeout?

  - by keflavich

  I frequently use ssh tunnels to access VNC sessions on remote machines, but this is on my laptop so the connections break when I put it to sleep for the night. If I then try to re-open the connection in the morning, I have to manually kill the ssh session, otherwise I get this error: bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 1202 Could not request local forwarding. The SSH command I'm using is this: ssh -N -C -f -L 1202:localhost:5900 name@server What's the best way to have the ssh tunnel die when it disconnects? Or reset?

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• disbale ssh for bnroot as root account

  - by user2916639

  i am beginner with centos - Linux i have dedicated server . my root username is bnroot . now i am taking ssh using this user. i want to disable ssh for bnroot. i have created user user name welcome i want take ssh login by welcome user then i ll use su - bnroot to get root privileges. i have set PermitRootLogin no , AllowUsers welcome IN /etc/sshd_config and after restarting sshd service . i take ssh login by welcome use then it is ok. but when i use su bnroot its prompt to password and i enter right passowrd it show su: incorrect password , i dont know where i am wrong . please help me here. changes i done - /etc/ssh/sshd_confid PermitRootLogin no AllowUsers welcome /etc/sudoers welcome ALL=(ALL) ALL getting error in /var/log/secure unix_chkpwd[666]: password check failed for user (bnroot) su: pam_unix(su:auth): authentication failure; logname=ewalletssh uid=503 euid=500 tty=pts/1 ruser=ewalletssh rhost= user=bnroot please let me know where i am wrong

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• Run SSH trough a proxy

  - by Row Minds

  I have a question. How can i run SSH trough a proxy or a SSH Tunneling Protocol? For example i have a computer(Ubuntu) with ip eg. 123.123.123.123 and i want to connect to my server trough a proxy eg. 111.111.111.111 so i can see in lastlog that the last authentication was made from 123.123.123.123 . I need this because i cannot access a certain server at work only with an specified range IP. What i tried so far was http://daniel.haxx.se/docs/sshproxy.html where i used ssh -D 1 [email protected] -p 443 where i had 127.0.0.1 forwarded to a SSH Tunneling Protocol http://www.nixtutor.com/linux/installing-and-configuring-an-ssh-server/ (i configurated listening on port 443 but no result, still no connection (denied) ...) This question may sound simple, but i can't figure it out, can you please help me? Thanks.

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• How to set public SSH key for root user on server?

  - by amrnt

  I'm trying to follow Slicehost Document to setup my server. I reached SSH section. I made it as written, but when i logged out from root, i cant access root@IP_ADDRESS -p 30000 again! but i can access user@IP_ADDRESS -p 30000. So, the question is, how to set a public SSH key for root user? Thanks in advance!

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• SSH tunneling with Synology

  - by dvkch

  I try to tunnel SMB and AFP services through SSH to acces my NAS shares on my machine. I already do it successfully with my ReadyNAS using the following command line (ran as my user on my mac) : ssh -Nf -p 22 -c 3des-cbc USER@SERVER -L 8888/127.0.0.1/548 -L 9999/127.0.0.1/139 but I cannot reproduce the same with the Synology NAS. Connecting using this command gives me the following error : channel 4: open failed: administratively prohibited: open failed I also tried with a windows client (used bitvise tunneler): it works with the ReadyNAS but not the Synology and get the following error msg : server denied request for client-side server-2-client forwarding on 127.0.0.1:139 I modified /etc/ssh/sshd_config : MaxSessions 10 PasswordAuthentication yes PermitEmptyPasswords no AllowTcpForwarding yes GatewayPorts yes PermitTunnel yes Is there any way to make it work ? I must add that I can successfully connect via SSH to the NAS so I donnot think this is a firewall issue between the Synology and my computer. Thanks for you answers

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• SSH error 114 when connect with FinalBuilder 7

  - by mamcx

  I'm testing FB 7 and try to connect to my Mac OS X Snow Leopard machine. I can connect with paramiko (python SSH library) but not FB7. The only thing I get is: SSH error encoutered: 114 I try stopping & restarting the share session on Mac OS X. update: I enable server debug and get this log: debug1: sshd version OpenSSH_5.2p1 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA 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]='-Dd' debug1: Bind to port 22 on ::. Server listening on :: port 22. debug1: Bind to port 22 on 0.0.0.0. Server listening on 0.0.0.0 port 22. debug1: fd 5 clearing O_NONBLOCK debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 Connection from 10.3.7.135 port 49457 debug1: Client protocol version 2.0; client software version SecureBlackbox.8 debug1: no match: SecureBlackbox.8 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug1: privsep_preauth: successfully loaded Seatbelt profile for unprivileged child debug1: permanently_set_uid: 75/75 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr [email protected] none debug1: kex: server->client aes128-ctr [email protected] none debug1: expecting SSH2_MSG_KEXDH_INIT debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user mamcx service ssh-connection method none debug1: attempt 0 failures 0 debug1: PAM: initializing for "mamcx" Connection closed by 10.3.7.135 debug1: do_cleanup debug1: PAM: setting PAM_RHOST to "10.3.7.135" debug1: do_cleanup debug1: PAM: cleanup debug1: audit_event: unhandled event 12

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• MaxStartups and MaxSessions configurations parameter for ssh connections?

  - by Webby

  I am copying the files from machineB and machineC into machineA as I am running my below shell script on machineA. If the files is not there in machineB then it should be there in machineC for sure so I will try copying the files from machineB first, if it is not there in machineB then I will try copying the same files from machineC. I am copying the files in parallel using GNU Parallel library and it is working fine. Currently I am copying 10 files in parallel. Below is my shell script which I have - #!/bin/bash export PRIMARY=/test01/primary export SECONDARY=/test02/secondary readonly FILERS_LOCATION=(machineB machineC) export FILERS_LOCATION_1=${FILERS_LOCATION[0]} export FILERS_LOCATION_2=${FILERS_LOCATION[1]} PRIMARY_PARTITION=(550 274 2 546 278) # this will have more file numbers SECONDARY_PARTITION=(1643 1103 1372 1096 1369 1568) # this will have more file numbers export dir3=/testing/snapshot/20140103 find "$PRIMARY" -mindepth 1 -delete find "$SECONDARY" -mindepth 1 -delete do_Copy() { el=$1 PRIMSEC=$2 scp david@$FILERS_LOCATION_1:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. || scp david@$FILERS_LOCATION_2:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. } export -f do_Copy parallel --retries 10 -j 10 do_Copy {} $PRIMARY ::: "${PRIMARY_PARTITION[@]}" & parallel --retries 10 -j 10 do_Copy {} $SECONDARY ::: "${SECONDARY_PARTITION[@]}" & wait echo "All files copied." Problem Statement:- With the above script at some point I am getting this exception - ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host And I guess the error is typically caused by too many ssh/scp starting at the same time. That leads me to believe /etc/ssh/sshd_config:MaxStartups and MaxSessions is set too low. But my question is on which server it is pretty low? machineB and machineC or machineA? And on what machines I need to increase the number? On machineA this is what I can find - root@machineA:/home/david# grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10:30:60 root@machineA:/home/david# grep MaxSessions /etc/ssh/sshd_config And on machineB and machineC this is what I can find - [root@machineB ~]$ grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10 [root@machineB ~]$ grep MaxSessions /etc/ssh/sshd_config #MaxSessions 10

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• What does this ssh error mean?

  - by kevin

  This is my last resort. I've been trying to figure out the problem here for hours. Here's the deal: I have copied my private key from machine #1 onto machine #2. Machine #1 is able to connect via ssh to a server with my public key just fine, but machine #2 gives the following output, when trying to connect to the server: $ ssh -vvv -i /home/kevin/.ssh/kev_rsa [email protected] -p 22312 OpenSSH_5.3p1 Debian-3ubuntu6, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.1.244 [192.168.1.244] port 22312. debug1: Connection established. debug3: Not a RSA1 key file /home/kevin/.ssh/kev_rsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace ... Permission denied (publickey). There is obviously more debug output that I have omitted, and I can provide upon request. I am convinced however that it doesn't like my private key file. I also had a suspicion that it has to do with how I copied it from machine #1 to machine #2. I copy/pasted the text from the private key onto a flash drive. This might be the problem, however, when I duplicated this method on another working private key file, and did a diff on the original, to the copy/pasted one, they are identical. I've been struggling with this. If I could just get a little more information on why it doesn't like my key, I could fix it I'm sure. Anyone have any ideas on this? Is there some meta-data somewhere that tells ssh that a file is in fact an RSA key?

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• ssh keys rejected each day

  - by EddyR

  I've had OpenSSH server running on my debian server for a couple weeks and all of a sudden now when I go to login the next day it rejects my ssh key and I have to manually add a new one each time. Not only that but I have the "tunneling with clear-text passwords" option enabled and the non-root (login with root is disabled) account for that is rejected too. I'm at a loss why this is happening and I can't find any ssh options that would explain it. --update-- I just changed debug level to DEBUG. But before that I'm seeing a lot of the following in auth.log Feb 1 04:23:01 greenpages CRON[7213]: pam_unix(cron:session): session opened for user root by (uid=0) Feb 1 04:23:01 greenpages CRON[7213]: pam_unix(cron:session): session closed for user root ... Feb 1 04:36:26 greenpages sshd[7217]: reverse mapping checking getaddrinfo for nat-pool-xx-xx-xx-xx.myinternet.net [xx.xx.xx.xx] failed - POSSIBLE BREAK-IN ATTEMPT! ... Feb 1 04:37:31 greenpages sshd[7223]: Did not receive identification string from xx.xx.xx.xx ... My sshd_conf file settings are: # Package generated configuration file # See the sshd(8) manpage for details # What ports, IPs and protocols we listen for Port xxx # Use these options to restrict which interfaces/protocols sshd will bind to #ListenAddress :: #ListenAddress 0.0.0.0 Protocol 2 # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key #Privilege Separation is turned on for security UsePrivilegeSeparation yes # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 768 # Logging SyslogFacility AUTH LogLevel DEBUG # Authentication: LoginGraceTime 120 PermitRootLogin no StrictModes yes RSAAuthentication yes PubkeyAuthentication yes #AuthorizedKeysFile %h/.ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication #IgnoreUserKnownHosts yes # To enable empty passwords, change to yes (NOT RECOMMENDED) PermitEmptyPasswords no # Change to yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords PasswordAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding no X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* Subsystem sftp /usr/lib/openssh/sftp-server UsePAM no ClientAliveInterval 60 AllowUsers myuser

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• ssh timeout issue connecting to an EC2 instance on OS X

  - by mamusr

  I am new to AWS and not a networking expert but curious to know more about it. I created a VPC with a public subnet only. Then i created an EC2 instance using an Ubuntu 14.04 64-bit pv AMI image (ami-e84d8480) as well generating the key pair needed to connect to it through ssh. I followed amazon's instructions to connect to an EC2 instance via ssh which did not work. Here is my attempted input and debug log: Running on OS X 10.9.4 user$ ssh -vvv -i key.pem [email protected] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 102: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22. debug1: connect to address xxx.xxx.xxx.xxx port 22: Operation timed out ssh: connect to host xxx.xxx.xxx.xxx port 22: Operation timed out To attempt to resolve the issue: I enabled the SSH port. Tried different usernames other than ubuntu, like ec2-user and root. Initially set an inbound ssh rule in the security group to connect to only my ip address. When that did not work, i changed it to allow any ip to connect. But those actions did not fix the problem. Here are my guesses as to what i am missing in getting the EC2 instance connection to work. My etc/ssh_config file may be preventing the connection from taking place. I may have missed an important networking detail when setting up the VPC. I do not have a public ip address specified for the instance. I am connecting through the private ip address. My questions for the community: Am i going about it the wrong way connecting to the instance through the private ip address? if so, do i need to specify a public ip address for it to connect or some other method?

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• ssh connection slow when using @hostname.com but now when using @ipaddress

  - by Alex Recarey

  When connecting to a Debian server using ssh, if I use [email protected] (the IP address of hte server) the connection is instant. If however I use [email protected] (a DNS redirected to the IP address of the server) the ssh connection hangs for a 20 seconds before connecting successfully. The ssh logs show the following: [alex@alex home]$ ssh -v -v [email protected] OpenSSH_5.5p1, OpenSSL 1.0.0c-fips 2 Dec 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 and here it hangs during 20 seconds before continuing. I think it might have something to do with reverse DNS or similar (the server does not really "know" it's name is hostname.com, it just has that DNS rediriected to its IP address). I have added the following options to /etc/ssh/sshd_config: UseDNS no GSSAPIAuthentication no to no effect. The server's DNS records in /etc/resolv.conf are configured correctly: ping hostname.com PING sub.domain.com (X.X.X.X) 56(84) bytes of data. 64 bytes from replicant (X.X.X.X): icmp_seq=1 ttl=64 time=0.029 ms 64 bytes from replicant (X.X.X.X): icmp_seq=2 ttl=64 time=0.050 ms?s Thanks for the help. Solution: It seems the DSL router my ISP saddled me with was causing the trouble. Changing my DNS server from 192.168.1.1 (router's IP) to google's (8.8.8.8, always good to know when you are in a hurry) instantly solved the connection delay problem. I am guessing that the 50€ router provided does not cache DNS entries, although I don't understand why pinging the DNS address had no delay, and 20 seconds is too long of a wait, even for uncached DNS. Tnanks again for the help!

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• can't ssh within LAN, but can connect from outside

  - by Patrick B.

  A strange issue: I have a desktop running Ubuntu 10.04 behind a Netgear WNR1000 router performing NAT. I would like to be able to ssh into the desktop from my laptop (running Windows 7 and Cygwin). When at home, both the desktop and the laptop are connected by wireless (the desktop is in a different room from the router). sshd seems to be running fine, since ssh localhost from the desktop works without trouble. Also, ssh my.ip.address from my laptop when it is not behind the router works fine (I am forwarding port 22 on the router to my desktop). However, ssh same.ip.address from within the LAN fails with "Connection refused". ssh 192.168.local.ip.address fails with a different message, "Connection timed out". I can connect if I first ssh to a machine outside the LAN. So far I haven't found anything with Google because with the search terms that seem like they would be relevant, the vast majority of people have the opposite problem - i.e., they can't connect from outside the LAN but can connect within it. I can port forward through a remote server when I'm at home, but this seems like a totally absurd way to connect two computers on the same home LAN. I have already tried stopping and starting sshd on the desktop. Any thoughts?

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