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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    However, I want my SSH users on IP management only. SSH access on other PIS (defined for each interface vlan) should be blocked by the switch.

    Please suggest how to configure it.

    Thanks in advance.

    The best way to achieve this is to bind an access list to your vty line. This access list is normally a standard ACL, but this time you use an extended ACL that uses your IP management as a destination:

    EDIT: No, it doesn't work as proposed. Please see the other posts.

    MGMT-TRAFFIC extended IP access list

    permit tcp SOURCE-NET host 10.10.10.10 eq 22

    line vty 0 4

    access-class MGMT-TRAFFIC

    In this example, SOURCE-NET is the IP network hence your traffic management comes and 10.10.10.10 is managing IP on your device.

  • How the router can understand protocols such as SSH or telnet

    How the router can understand protocols such as SSH or telnet
    and device for layer 3 router

    second question, I found this accessory of CCNA security book Keith Barker
    wrote it router look at application layer information how?

    Thank you in advance.

    Hello

    I think that confuse you routing process.

    Router; route packages using their layer 3 address.

    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.

    Intermediate device belongs in the the router routing process.

    Best regards.

  • SSH to the external interface

    How to configure ssh on the external interface of the asa? I have defined an applied, external interface access list, but it did not work for some reason any

    Here is a list of access

    interface GigabitEthernet0/1

    nameif outside

    security-level 0

    IP 10.254.17.9 255.255.255.248

    !

    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 0.0.0.31

    access-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 0.0.0.63

    access-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 transport

    password 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

    ==========================================

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    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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