SSH permissions
I know that this has been done, but I can't find here or elsewhere.
I just reinstalled my SSH protocols after replacing a hard drive on the server and (data only) restore from a Time Machine backup. I seemed to have to start the SSH process from scratch.
I'm from the procedure (which I learned here) ctlow.ca/SSH-VPN_MacOSX.html.
It worked, but when I connect from the client, it just goes through without asking for password. I think that he asked a password the first time, the password private key (?), but he used to ask for it (in a small text box, echo) every time and then the password (?) server in the Terminal itself, not taken over.
Now, none of those happening.
So, I found some notes I had made about it and reset the permissions as 700 .ssh folder and files inside like 600, on the server and the client.
It ends up looking like this:
ClientComputer: ~ ClientID$ ls - ael .ssh
Total 24
drwx - 5 personal ClientID 170 11 Sep 15:24.
drwxr-x-wx + 24 personal ClientID 816 13 Sep 08:26...
0: Group: everyone deny delete
-rw-@ 1 personal ClientID 32 10 February 2012 config
-rw - 1 1766 11 Sep 15:11 id_rsa personal ClientID
-rw - 1 818 11 Sep 15:33 known_hosts personal ClientID
====
ServerComputer: ~ ServerID$ ls - ael .ssh
Total 16
drwx - 4 personal ServerID 136 11 Sep 15:28.
drwxr-xr-x @ 25 personal ServerID 850 11 Sep 15:30...
0: Group: everyone deny delete
-rw - 1 416 11 Sep 15:28 authorized_keys personal ServerID
-rw - 1 391 11 Sep 15:26 known_hosts personal ServerID
I don't think I'm particularly threatened, but I was happy to have to use two passwords to log into the SSH tunnel. No idea why I wonder no password now? (I did specify a passphrase when generating the key.)
Thank you.
Charles
P.S. The customer running 10.9, 10.11 server.
P.P.S. For the client-user info window showed "shared folder" which I don't know how it got that way and have unchecked the box. I doubt if that is related to my question.
Hello Charles,
I'm not sure what you were doing before, but it seems OK now.
Most of the internet uses the same set of instructions that tell people not to use a password for the private key. It's a hassle to the running ssh-agent and most people struggle enough as it is with ssh. But on OS X, keychain using ssh-agent. Thus, when you provide a password for your private key, the first time you go, you will be asked (via a beautiful Aqua GUI) your password. You can expect that and save it in the keychain, hence, you will never be asked again. Then, if the rest of your ssh stuff is correct, it will pass all by as you describe. It sounds like what is happening now, and that's how it should work.
If I were to speculate, I think that maybe before you run a custom build of ssh and ssh-agent command line version. This would explain the double Terminal passwords can be made echo and the other not.
Tags: Mac OS & System Software
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: endThe party concerned to control where you are allowed to SSH in the ASA are these lines:
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--
Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
http://www.Kiva.org/invitedBy/karsteni -
Hello
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Please suggest how to configure it.
Thanks in advance.
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EDIT: No, it doesn't work as proposed. Please see the other posts.
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and device for layer 3 routersecond question, I found this accessory of CCNA security book Keith Barker
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Hello
I think that confuse you routing process.
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This means not router cannot understand the upper layer protocols. There just transmission by addressess of layer 3.
for example: we can define Access-list for tcp and udp layer 4 packets. router can decide whether to permit or refuse even if these lists filter by glance in the section layer 4 of the package.
In an SSH or Telnet session, role of the router is terminal.
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Best regards.
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interface GigabitEthernet0/2
No nameif
security-level 100
no ip address
!
interface GigabitEthernet0/3
EIGRP 2008 description
nameif eigrp
security-level 100
IP 10.40.50.65 255.255.255.252
!
interface Management0/0
nameif management
security-level 100
IP 192.168.251.1 255.255.255.0
management only
!
boot system Disk0: / asa821 - k8.bin
passive FTP mode
access-list 110 scope ip allow a whole
NAT allowed ip extended access list a whole
allow_ping list extended access permit icmp any any echo response
allow_ping list extended access permit icmp any any source-quench
allow_ping list extended access allow all unreachable icmp
allow_ping list extended access permit icmp any one time exceed
allow_ping list extended access udp allowed any any eq isakmp
allow_ping list extended access allow esp a whole
allow_ping ah allowed extended access list a whole
allow_ping list extended access will permit a full
allow_ping list extended access permit tcp any any eq ssh
access-list extended ip allowed any one sheep
icmp_inside list extended access permit icmp any one
icmp_inside of access allowed any ip an extended list
pager lines 24
asdm of logging of information
Outside 1500 MTU
EIGRP MTU 1500
management of MTU 1500
no failover
ICMP unreachable rate-limit 1 burst-size 1
ICMP allow all outside
don't allow no asdm history
ARP timeout 14400
Global 1 interface (outside)
Access-group allow_ping in interface outside
Can't say I've seen this before, but SSH is easy to do on the SAA.
I recommend you to take out the first interface access list to see if that would be it.
You have published only a partial section of the config, but make sure you have the SSH command with the address of the subnet that you connect from. Your config is no longer visible as I type this but try "SSH 0.0.0.0 0.0.0.0 outdoors. This allows all subnets access to the external interface. This command works as an access list to restrict connectivity to approved subnets. i.e. ' SSH 10.0.0.0 255.0.0.0 out "only allow hosts on the 10.x.x.x network to connect via SSH.
Turn 'debug ssh' to see what errors are too.
And, you can always remove your keys (related encryption rsa key) and rebuild their return (encryption key generate rsa 1024 mod gen). This will make your ssh client, I use PuTTY, think that this is a new feature and invites the OK to connect.
Good luck.
Kevin
-
RV180 ssh and https Wan?
HY everybody.
Is it possible to manage the RV180 of the side WAN via https and ssh?
In addition, is still available LAN ssh?
Kind regards
F.
Flavio,
The RV180 only supports the management remotely via http or https. The Cisco small business routers do not support ssh or telnet.
You can enable HTTPS and remote management on the Cisco LAN interface
RV180/RV180W. If a user connects to a PC to the LAN port, web access is
a permit by using secure HTTP (HTTPS).
-
in PIX with SSH connection issues
Hello
I have a PIX 506 running OS 6.2 (2) which is located in a demilitarized zone known as the PIX from the outside. It's behind an another PIX506 (PIX inside). The two PIX have Ganymede + configured for authentication of the connection.
Last week the outdoor PIX crushed physically and I replaced it with a spare PIX part and he completely reconfigured.
Now I can't connect to this outside PIX using SSH, despite the list of access inside PIX is correct and can SSH and Ganymede +. However, I can telnet to it.
I use Putty to connect and when I start the session SSH from the PIX, the login window appears and disappears immediately without having the time to do anything myself.
Any help would be greatly appreciated. Thanks in advance.
A.G.
##################################################
Inside PIX config:
access-list inside allow TCP Company-Interior-Net 255.255.255.0 host outsidepix-Interior-interface eq ssh
list Company-Interior-Net 255.255.255.0 access inside permit tcp host eq telnet interface-inside-outsidepix
access-list inside allow the ICMP messages to echo DMZNet 255.255.255.192 Company-Interior-Net 255.255.255.0
access-list inside allow Company-Interior-Net icmp 255.255.255.0 DMZNet 255.255.255.192 - response to echo
dmzacl list of access allowed icmp echo host outsidepix-Interior-interface company-Interior-Net 255.255.255.0
dmzacl list of access allowed icmp host outsidepix-Interior-interface company-Interior-Net 255.255.255.0 - response to echo
access-list permits dmzacl tcp host outsidepix-Interior-interface host Ganymede-server1 eq Ganymede
access-list permits dmzacl tcp host outsidepix-Interior-interface host Ganymede-server2 eq Ganymede
The outdoor PIX config:
GANYMEDE + Protocol Ganymede + AAA-server
AAA-server GANYMEDE + (inside) host Ganymede-server1 1234 timeout 10
AAA-server GANYMEDE + (inside) host Ganymede-server2 1234 timeout 10
RADIUS Protocol RADIUS AAA server
AAA-server local LOCAL Protocol
Console telnet authentication GANYMEDE AAA +.
the AAA console ssh GANYMEDE authentication +.
AAA authentication enable console GANYMEDE +.
Telnet Company-Interior-Net 255.255.255.0 inside
Telnet timeout 5
SSH-company-Interior-Net 255.255.255.0 inside
SSH DMZNet 255.255.255.192 inside
SSH timeout 5
did you follow the steps to configure ssh? the domain name and host name is defined on it? CA has generated you any rsa... to create the encryption keys?
-
Simple Question SSH Access-List
I am allowing SSH access for all of our Cisco devices and you want to restrict access to all the following ip addresses: 192.168.200.1 - 192.168.200.50. I forgot the exact configuration of access list to achieve this. The subnet is 24 and I don't want the whole subnet - seulement.1-. 50.
Thank you
Thomas Reiling
Hello
If you use ssh, make sure that you have a domain name, host name and a rsa key is generated. Assuing you have done this, the command vty ACL and following line will do the trick. Note that the host 1-50 list is not on a subnet barrier.
To get it exactly
access-list 1 remark MANAGEMENT ALLOW
access-list 1 permit 192.168.200.0 0.0.0.31access-list 1 permit 192.168.200.32 0.0.0.15
access-list 1 permit 192.168.200.48 0.0.0.1
host access-list 1 192.168.200.50
access-list 1 refuse any newspaper
It would be a good idea to put it on a limit, however, so the following would be much simpler and easier to read.
access-list 1 remark MANAGEMENT ALLOW
access-list 1 permit 192.168.200.0 0.0.0.63access-list 1 refuse any newspaper
Apply the class of access on the vty lines and authentication, I would put something there too.
line vty 0 4
access-class 1
entry ssh transportpassword Bonneau
That should do it.
Good luck!
Brad
-
1841 = >; unable to connect via SSH
I am able to connect to the router via a tunnel of crypto isakmp using telnet. However, I'm unable to configure SSH on this thing. Can someone help me please in what I may be missing. I'm now at an impasse. I posted the router info and entered similar below.
Software Cisco IOS, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.4 (3), SOFT VERSION
WARE (fc2)
======================================
domain IP CISCO$ .COM
property intellectual ssh time 60
property intellectual ssh port 2222 Rotary 1
property intellectual ssh source interface FastEthernet0/0
property intellectual ssh version 2
======================================
scope of CISCO IP access list
permit tcp x.x.x.x where x.x.x.x any eq 2222
deny ip any any newspaper
access-list 101 permit tcp x.x.x.x where x.x.x.x any eq telnet
access-list 101 tcp refuse any any eq telnet log
==========================================
line vty 0 4
access class 101 in
exec-timeout 3 0
password XXXXXX
transport of entry all
transportation out all
line vty 5 15
CISCO access class in
password: xxxxxxxx
transport input telnet ssh
exit telnet ssh transport
=====================================
which seems good...
What happens when you do a sh ip ssh?
Is there any firewall or ACL blocking port 22?
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