http over ssh tunnel using multiple hops

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

scp over multiple hops

Hi friends, I am trying to scp a file from server A to Server C via Server B (which is jump host) from Server A to Server B i have one pem key. from server B to server C I have different Pem key.. what I tried scp -r -o ProxyCommand="ssh -W %h:%p ec2-user@1.4.5.5 dmu.sh...

2. UNIX for Advanced & Expert Users

Tunnel using SSH

I am not clear with the part of concept of Tunneling using ssh. ssh -f -N -L 1029 192.168.1.47:25 james@192.168.1.47 I found out that above code works for me . but didn't quite well understood how ti works and need to ask you guys some questions. since we are using tunnel through ssh ...

3. Solaris

Tunnel X over ssh for 11.3

Hello Solaris experts: Trying to bring the 11.3 gdm screen over ssh to a Linux Box: I did the following: 1. made chanes to /etc/ssh/sshd_config & bounced ssh daemon: # X11 tunneling options X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes 2. From the remote Linux box: ...

4. Shell Programming and Scripting

Ssh multiple hops to execute commands with arguments

Hi I need to write a script to ssh through several hops (e.g. HostA-HostB-HostC-HostD), where Host A does not have direct assess to HostC ; HostB cannot access HostD directly. when I ssh 3 hops and run command with arg1, arg2 and redirect the output to a file, e.g. HostA> ssh -t HostB ssh -t...

5. IP Networking

Help with SSH tunnel?

I have a Java web app on machine (X) that needs to talk to an LDAP server (Y) on :636, but the LDAP server is only accessible on a particular network. I can login to a machine (Z) on that network from X, and this machine can talk to the LDAP server on :636. How can I tunnel so that X can...

6. UNIX for Dummies Questions & Answers

SSH tunnel working for ssh but not for sshfs

I'm trying to setup a link between my home pc (work-machine) and a server at work (tar-machine) that is behind a gateway (hop-machine) and not directly accessible. my actions: work-machine$ ssh -L 1234:tar-machine:22 hop-machine work-machine$ ssh -p 1234 user@127.0.0.1 - shh access on...

7. IP Networking

ssh tunnel with 2 hops and key

I have situation: - localhost L - server A - server B (currently accessible only from B, but it have key of my localhost - added when L have different location and can access directly to B) problem: how set tunnel from L to B and use key from localhost (I don't remember password to B)? I...

8. Solaris

Help with executing multiple remote commands after multiple hops

Hi SSHers, I have embedded this below code in my shell script.. /usr/bin/ssh -t $USER@$SERVER1 /usr/bin/ssh $USER2@S$SERVER2 echo uptime:`/opt/OV/bin/snmpget -r 0 -t 60 $nodeName system.3.0 | cut -d: -f3-5` SSH to both these servers are public-key authenticated, so things run...

9. Shell Programming and Scripting

SSHing with multiple hops

Hi, I have got a shell script, which fails to run properly.. I am getting the following error: "Pseudo-terminal will not be allocated because stdin is not a terminal. Permission denied (gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive)." I SSH to the machine and then run the...

10. IP Networking

Blocking HTTP tunnel in squid proxy 2.5

Does any one know how to block HTTP Tunnel in squid proxy server. Pls reply

LEARN ABOUT FREEBSD

nos-tun

NOS-TUN(8)						    BSD System Manager's Manual 						NOS-TUN(8)

NAME

     nos-tun -- implement ``nos'' or ``ka9q'' style IP over IP tunnel

SYNOPSIS

     nos-tun -t tunnel -s source -d destination -p protocol_number [source] target

DESCRIPTION

     The nos-tun utility is used to establish an nos style tunnel, (also known as ka9q or IP-IP tunnel) using a tun(4) kernel interface.

     Tunnel is the name of the tunnel device /dev/tun0 for example.

     Source and destination are the addresses used on the tunnel device.  If you configure the tunnel against a cisco router, use a netmask of
     ``255.255.255.252'' on the cisco.	This is because the tunnel is a point-to-point interface in the FreeBSD end, a concept cisco does not
     really implement.

     Protocol number sets tunnel mode.	Original KA9Q NOS uses 94 but many people use 4 on the worldwide backbone of ampr.org.

     Target is the address of the remote tunnel device, this must match the source address set on the remote end.

EXAMPLES

     This end, a FreeBSD box on address 192.168.59.34:

	   nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45

     Remote cisco on address 192.168.56.45:

	   interface tunnel 0
	   ip address 192.168.61.2 255.255.255.252
	   tunnel mode nos
	   tunnel destination 192.168.59.34
	   tunnel source 192.168.56.45

AUTHORS

     Nickolay N. Dudorov <nnd@itfs.nsk.su> wrote the program, Poul-Henning Kamp <phk@FreeBSD.org> wrote the man-page.  Isao SEKI
     <iseki@gongon.com> added a new flag, IP protocol number.

BUGS

     We do not allow for setting our source address for multihomed machines.

BSD
								  April 11, 1998							       BSD

IP Networking