Cisco Firewall :: Unable To SSH From Outside To ASA 5520
Feb 8, 2012I am unable to ssh to the cisco firewall from outside. Though when i telnet on port 22, [code] When i do a putty session i get a blank screen.
View 9 RepliesI am unable to ssh to the cisco firewall from outside. Though when i telnet on port 22, [code] When i do a putty session i get a blank screen.
View 9 RepliesAs part of our PCI compliance, we were required to add a line to all of our ACLs in our ASA 5520 running version 8.2(3). Though there is an implicit deny all, we had to add a line to deny from any source to any destination.We had no problems in adding the additional deny all statements except for our NAT access-list. This NAT access list is used for our internet connection.Currently, the NAT ACL has 4 entries to permit from a specified source to destination any. This ACL is then called on our NAT statement.nat (inside) 1 access-list NAT,Also, note that NAT control is in place and we also have NAT zero statements for our VPN connections.So to fulfill our requirements, we just had to add another line to our ACL entries. But we encountered an issue with our NAT acl.
View 10 Replies View RelatedI was trying to upgrade from 8.3.1 to 8.3.2. but I am unable to copy via tftp to the ASA flash or disk0:
ASA5520# copy tftp: flash:
Address or name of remote host []? 10.88.127.153
Source filename []? asa831-k8.bin
Destination filename [asa831-k8.bin]?
[code]....
Half way thru writing to the disk, it goes for a reboot. There is more than enought space on the disk0. I tried copying via a Compact Flash, but the ASA is not detecting the Compact Flash (which I thinks should be disk1). I tried copying a asdm file, even that also went for a reboot.I am stuck now, unable to upgrade
I am working on adding a mapping to our external address for our mail server - let's call it mail.example.com
I would like to be able to access mail.example.com internally for our user's smartphones - if they access our company WiFi they are not able to get mail using the mail.example.com as the server name in their phone setups. However, once they leave the office and use any other WiFi it works fine. Also, I am unable to ping that address from any internal device. I believe also this is the reason Exchange accounts do not work on our site to site VPN connections.
I have a ASA 5520 and work primarily in the ASDM 6.4 to do configurations in the main office and have 5510 in our site to site connections.
I am unable to ping inside interface (Rin) to outside interface (Rout) of my Cisco ASA 5520 runing on ASA Version 8.4(1).
ASA Version 8.4(1)
!
hostname FW5520
[Code].....
We were using ASA-5520-K9 with ASA-SSM-AIP-20-K9 but recently found some hardware problem in our running ASA. Now cisco want to replace with ASA-5520-K8.
View 1 Replies View RelatedWe have an ASA 5520 with two VPN profiles working fine.Since some users are now working with Windows 8, VPN clients for Cisco ASA is not able to connect.I have read there are problems for such VPN Clients in that OS, and I should use now Anyconnect for them to connect. I thought we had anyconnect working also, because some users can connect to a web page they can do some kind of connections to internal servers, (web, telnet, rdp, etc) so I installed cisco anyconnect VPN client in a laptop and try to connect (same IP and port I used for that web page) but after signing I get the message AnyConnect is not enabled on the VPN Server.So I tried to follow a configuration guide for Anyconnect, but there's a step in which I am trapped, these are the steps: Click Configuration, and then click Remote Access VPN.
View 7 Replies View Related i have a site to site vpn stablished, the vpn works fine (while is up), i have a cisco asa 5520 and the other end of the vpn is a jupiter device that for technical reasons needs to send a continuos ping and when it does not receive a reponse back it brings down the vpn tunnel and reestablish it again. while the vpn is up traffic flows perfectly but because i m unable to repond to the ping the vpn is brought down as reestablished by the jupiter device. the jupiter device pings the encryption domain which is an ip that is natted to the real ip in the inside network. this is my configuration of the vpn:
AAA.AAA.AAA.AAA is the ASA public ip in the outside
BBB.BBB.BBB.BBB is the jupiter device ip (part of the object group IP_LIST)
CCC.CCC.CCC.CCC is the nat ip on the ASA
10.21.0.164 is the real address in the inside(code)
I have an issue where my vpn clients are unable to access certain vlans in my network.I have configured an ASA 5520 with VPN access using the wizard and using the ASA as a dhcp server for VPN clients. I find that this allows the clients to access server resources such as the Exchange and Domain Controller but I find that these vpn clients are unable to ping each other as well as certain vlans that I have.Is there a way to configure the ASA to use a particular vlan that is already configured on the core switches?If I create a vlan interface and set the IP of it to 10.50.x.x then the vpn clients are suddenly unable to connect to any network resources...
View 1 Replies View Relatedi've got up and running a webportal on my asa 5520 os 8.2.5 and but i can not make the ssh plugin ver ssh-plugin.111006 work, all of the others work well, no matter what web browser i use always fail, I even upgraded to the version ssh-plugin.120911 but with no luck, is there a debug or something that i could use to make it work properly?
View 2 Replies View RelatedI'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
I have an asa 5520. How would I configure my dedicated management interface to be able to route off subnet while the firewall is in transparent mode?
View 1 Replies View RelatedWe are using the newest release of AD Agent (1.0.0.32.1, built 598). The ASA Firewalls 5520 are having the software release 8.4(3)8 installed.When somebody tries to connect thru the Identity based firewalls from a citrix published desktop environment (PDI) the connection is not possible. Checking the ip-of-user mapping on the firewalls (show user-identity ip-of-user USERNAME) mostly doesn't show the mapping of the USERNAME and the PDI the user is logged in. The user-of-ip mapping of the PDIs IP-address shows mostly other users, which then are used to authenticate the acces thru the firewalls.
What is interesting, that on the AD Agent using "adacfg.exe cache list | find /i "USERNAME"" i can't see the PDIs IP-address neither because it is mapped to another user.Is Citrix Published Desktop environment supported to connect thru Identity based Firewalls? How AD Agent, Domain Controllers and Firewalls are working together? On the firewalls with "show user-identity ad-agent we see, the following:
-Authentication Port: udp/1645
-Accounting Port: udp/1646
-ASA Listening Port: udp/3799
Why Cisco does use 1645 and 1646 and not 1812 and 1813?The Listening Port is used for what purpose? we tried the AD Agent modes full- download and on-demand with the same effect.
I try to launch a LAND Attack against my firewall ASA 5520. Everything will work fine. But why, I think it should not work. I use a little tool where I can user a spoofed address, with a cluster shell and attack the firewall interface with the source of 127.0.0.1 ore the ip address of the interface as the source and destination. Then I get a cpu load of 89% with only two host. With IP tables I can use kernel processes to prevent this. But I don´t find anything for ASA.
View 1 Replies View RelatedTwo different WAN links get connected to the firewall via two routers.(Different ip subnets).I need to get this two wan streams seperatly to the core switches.Core switches sits.Active/Stanby senario. If the Active core goes down Stndby Core will have take over the traffic. My design is correct ,if not what do i need to change. ASA is 5520.
View 8 Replies View RelatedI have ASA 5520 installed. I want to use ntp server for firewall clock setting. I found one open-access ntp server (stratum 2) in Los Angeles:
[URL] 209.151.225.100
Can I use the following command to set ntp server?
ntp server 209.151.225.100 source outside.
communication between 2 vlans.i have 2 vlans
Vlan 100
ip add 1.1.1.1
!
!
!
Vlan 200
ip add 2.2.2.2
i want to make communication between 2 vlans on firewall 5520 ASA 8.2.
I have a VPN setup thru a Cisco 5520, Windows clients connect just find and the end users configure there browser to use our internal proxy servers. Users with the MAC OS X Anyconnect client can connect, they configure their Mac to use our proxy server, but the broswers will not work, clients can reach networks and resources behind the VPN gateway and have access to the Proxy(Tried a telnet to that hostname/port). I am running ASA 8.3(2), Anyconnect(OS X) 3.1.01065.
View 3 Replies View RelatedI was unable to access my ASA 5520 using HTTP/HTTPS even on the management interface. I had upgrade the ASA IOS to asa832-k8.bin and ASDM to asdm-634-53.bin. But, the issue still the same.
My browser show the error message as attach image.
PGA-Firewall-02# sh run: Saved:ASA Version 8.3(2)!hostname PGA-Firewall-02enable password 8Ry2YjIyt7RRXU24 encryptedpasswd 2KFQnbNIdI.2KYOU encryptednames!interface GigabitEthernet0/0 nameif public security-level 0 ip
[Code]....
We have two sites, Site-A with a ASA 5520 (Remote Access IPSEC VPN server) at one end and a new ASA 5515-X at Site-B. Users at Site-B are unable to establish a VPN connection to Site-A via Cisco VPN client from behind the new ASA 5515-X. They see the following error:
"Secure VPN Connection terminated locally by the client.
Reason 412: The remote peer is no longer responding.
They are able to access the same from home or elsewhere so I believe there is nothing wrong with Site-A ASA vpn config which we have been using for a while now. The new 5515-X (version 8.6) has a very basic config with all outbound traffic allowed. I'm pasting the config below. Do I need to enable/allow anything for it to work?
CISCOASA# sh run: Saved:ASA Version 8.4(3)!hostname CISCOASAenable password xxxxxxxxxxxx encryptedpasswd xxxxxxxxxxxxxx encryptednames!interface Ethernet0/0 nameif outside security-level 0 ip address x.x.x.x 255.255.255.248!interface Ethernet0/1 nameif backup security-level 0 ip address
[Code]....
I've tried to set up IPSec over TCP with a VPN-Client V5.0.07.0440 on Win 7 64b to my ASA 5520 (Version 8.2(2)16) regarding to
[URL]
IPSec over TCP activated at the ASA
crypto isakmp ipsec-over-tcp port 10000
and in the transport tap of the VPN connection 'enable transport tunneling' with IPSec over TCP an port 10000 instead of 'IPSec over UDP' The connect timed out with error code 412 And this is my log from the ASA:
%ASA-7-710005: TCP request discarded from 178.x.x.x/53225 to INTERNET:212.x.x.x/10000
%ASA-3-713042: IKE Initiator unable to find policy: Intf INTERNET, Src: 212.x.x.x, Dst: 178.x.x.x
%ASA-7-710005: TCP request discarded from 178.x.x.x/53225 to INTERNET:212.x.x.x/10000
%ASA-3-713042: IKE Initiator unable to find policy: Intf INTERNET, Src: 212.x.x.x, Dst: 178.x.x.x
I don't have a clue what's here missing.I have static crypto maps for the L2L tunnels and the default dynamic crypto map for the VPN clients which come over NAT-T
crypto map INTERNET_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 match address INTERNET_cryptomap_65535.65535
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set pfs
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set reverse-route
I have a serious problem with my corporate firewall, witch is an ASA 5520, fv 8.3, with 8 +1 interfaces. It suddenly started to crash every 10/20 minutes and rebooting alone.
First of all I checked system resources witch are in a very low usage state. I also checked interfaces errors, but nothing strange come out o from error counters analysis. I tried disabling logging and all the service policy rules configured, but nothing changed.
Nothing changed and firewall continue restarting by itself.
Last logs I received before crash were:
%ASA-4-711004: Task ran for 35 m sec, Process = Dispatch Unit, PC = 84a619e, Call stack =
%ASA-4-711004: Task ran for 35 m sec, Process = Dispatch Unit, PC = 84a619e, Call stack = 0x084A619E 0x084A6512 0x084A70E1 0x084A7987 0x084A7AAA 0x08558B9B 0x08558E8A 0x083D3518 0x083CA145 0x080659D1 0x089196D9 0x08919790 0x089FF711 0x08A27468
Here the sh crash info command on module 0, after last reboot:
[Code] ......
we are having a firewall asa 5520 .we have connected the management port and inside port to internal network and dmz port to dmz network.now we need to configure tacacs and other management tool on dmz devices through management port. The problem is the management devices tacacs and other are placed in internal network.
View 2 Replies View RelatedI have an ASA 5520 in my company which does all our NAT and Firewall access control. Currently there is a rule in place to allow an incoming connection on port 2222 from a specific ip address to allow access to a web app our developers created. This is a test before the web app is released live. Now the web app can communicate with the specific address and port but the incoming connection on port 2222 isn't getting through. Everything looks great in the firewall but how can I log any hits this ACL takes to identify any potential problems?
View 2 Replies View RelatedOur Local Network is behind the CISCO ASA Firewall.Whenever we are accessing to Client VPN server,it is getting connected but after few Minutes (May be 5/10/30 Min),the sessions are terminating. The same traffic through PIX is no issue , only with ASA Firewall. See the following Error and request you give the possible root cause for this.
2011-04-09 16:15:09 Local4.Info 172.16.1.68 %ASA-6-302016: Tear down UDP connection 87447908 for OUTSIDE:68.22.26.66/4500 to inside:172.16.9.10/4410 duration 0:27:49 bytes 18653
I have problem in the configuration of Cisco ASA 5520, IOS version 8.4. The connection is as follows: LAN network--> Firewall --> Routers with GLBP with virtual ip address. the clients can not ping the virtual interface of the GLBP group, but I can ping it from the firewall, and I can ping the clients from the firewall, I checked the packet tracer it gives :
Phase: 7
Type: NAT
Subtype:
Result: DROP
Config:
nat (inside10,outside) source dynamic LAN interface
Additional Information:(code)
I bought Dell Inspiron 5520 two weeks ago in Dubai, UAE.My Internet was working fine first couple of days but since past 4 days I am not able to connect to internet via Wifi (however there are other laptops i.e. HP and Dell) that are able to use the same Wifi to connect to internet but my brand new Dell us not able.I am not quite techie, only understand very basics of this whole laptop (hardware and softwares etc)
View 19 Replies View RelatedMy laptop is inspiron 5520 new one just one month old. my wireless is working but in very closed distance to the connection point, if I change the site to about 5 or 6 metter from the connection site, the Internet become interrupted! note: I did system restore and update for MecAFee
View 5 Replies View RelatedI have a multiple Offices in my location , all my external users are connecting my site using Cisco Client to site VPN and accessing my 2 sites , All users are able to access my 2nd office servers which are in 10.10.0.x pool , I have a different vlan in that same location with 10.10.35.x series and users are not able to access this pool servers , I am not much familiar with Routing . i am using ASA 5520 firewall .
View 11 Replies View RelatedNeed to know if ASA 5520 does Layer 7 firewall or not?
View 2 Replies View RelatedTwo days ago, we changed our old 525 with asa 5520 ( ver 8.2 ). Configuration is the same, except the version. It even retains the same global interface and static public ip address as the old device.All worked well during that period.
Yesterday, one of the http applications , not tested other day, was found not to be working. To test, we switched back to the old 525 , however nothing was working when we did that.
I am able to ping from Switch to firewall inside ip and user desktop ip but unable to ping from user desktop to FW Inside ip.. config is below for both switch and FW Cisco ASA5510....
TechCore-SW#ping 172.22.15.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.22.15.10, timeout is 2 seconds:
[Code].....
I have some problem with the ASA 5510 ver 7.0(6). My manager wants to keep this as backup. tried lots of things but still users not able to access internet nor can i ping anywhere.For example when i ping 4.2.2.2 i dont get any reply.The runing config is below for ur ref :
HQ-ASA-01# show running-config
: Saved
:
[Code]......