CSS one-armed-config and SMTP reverse lookup problems?

I was wondering if there would be potential reverse lookup problems from other company's when we try to send mail to their mail Domains.
If I configure failover for our mail server, I am thinking if we are sending mail, there could be a reverse-lookup issue, because our mail server would be configured with public IP Addresses other than what the MX record points to in DNS.
If we originate mail from our inside users, it will originate from the service IP address and not the VIP address.
Is this a valid concern?

The main advantage of this configuration is that the web servers will receive the IP address of the client that made the request. This is often required by web servers' administrators for accounting purposes.
In a one-armed configuration only, the network port ( Enet0) is used on the SCA. Only this specific port can be used for this setup. Encrypted and decrypted traffic will go through the same link
http://www.cisco.com/en/US/products/hw/contnetw/ps2083/products_configuration_example09186a00801bbf4e.shtml

Similar Messages

CSS one arm config

CSS 11506
Is it possible to pass Client's IP address
to the Backend servers in One arm config.
It is so that we can get stats on Web Server
Thanks in advance

Unfortunately CSS does not support HTTP header insertion.
You can either perforn PBR at the Real Server's Default gateway or use CSS as default gateway of Real Servers.
Thanks
Syed Iftekhar Ahmed

CSS 11503 One armed config

All,
I got a question on the one armed config.
Cisco says use "destination service" under the source group to change the default NAT behaviour of the CSS, because the servers' default gateways are set to the router IP address and the source IP address of the load balanced request is not on the local subnet. I understand this way you avoid the packets reaching the router directly when they head back to the client, bypassing the CSS.
Now the question I got here is that, what if I set the Servers' default gateway to the CSS rather than the Router. This way you are actually forcing the packets destined for remote networks to go through the CSS DG.. Should I need the source group anyway here. I think I don?t. Someone please clarify. Much appreciated?
thanks

if you set the default gateway to be the CSS, then there is no need for the source group.
However, if you have traffic going directly to the servers, they will go client-->router-->server-->CSS [breaks - because asymetric flow].
If you never access the server directly, you're ok. OR you can set a route on the router forcing the traffic through the CSS.
Gilles.

One Arm config Domain Name Content rule

Hi Guys
How does domain name content rule works in one arm config.
What do we put in source groups as VIP address.
Does it need host headers in WebServer as a requirement.
How does the client request gets completed.
Any help much appriciated..

Thanks for your reply Jim,
This is what I am trying to do in a One arm config topology
( As the CSS guide ( cntntgd.pdf ) says under Configuring a Domain Name content rule)
The CSS allows you to use a domain name in place of, or in conjunction with, a
VIP address in a content rule. Using a domain name in a content rule enables you
to:
Enable service provisioning to be independent of IP-to-domain namemappings
Provision cache bandwidth as needed based on domain names
So I am trying to create a content rule with a domain name instead of VIP address. For ex.
content domainRule3
protocol tcp
port 80
url "//domain.com/*"
add service Serv1
active
group servers
add destination service Serv1
VIP address ???????? ( what shd we put in here )
In this case what do we put as VIP address in source groups and how does the traffic flows from Client to actual Server in One arm topology. I am trying this topology where we have multiple sites configured with the same IP address with host headers
My assumption is that I shd configure DNS servers with VIP address for domain.com and use that as VIP address in source group. But how does the actual traffic flows from client to servers
Many thanks.

One Armed Config for multiple C classes

Hi,
I am trying to implement one armed config in the existing network for several c classes. Do I need to configure multiple Circuit vlan IP addresses corresponding to different C classes or one Circuit VLAN IP is sufficient.
Can I configure VIP in a different C class than Circuit VLan IP.
I intend to use Source groups to get the traffic from servers back to CSS.
Many thanks in advance.
SS

Two options are all ok.
1. The CSS will allow you to create a secondary address on the circuit.
for example,
circuit VLAN2
ip address 148.1.2.1 255.255.255.0
ip address 148.1.3.1 255.255.255.0
2. You could also create another interface "circuit" on the CSS and assign it with the new subnet IP. Then trunk the vlan to core network.
If you uses one arm mode, then you can use either source "groups" to get the traffic from servers back to CSS or PBR from switch.
You can configure VIP in a different C class than Circuit VLan IP. However, you need to control the routing tables of all other devices. Generally speaking, I would not recommend this setup to the customer.

One-armed config

We've done a one-armed setup in our production env using CSS11506(s) and have no issues. We're bring up a smaller setup using CSS 11150(s) and was wondering if they work just as well, performance wise, with a one-armed config?
Thanks
chad

I think it should work just fine. The same configuration would work for CSS 11000 series switches.
Check the config document:
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_example09186a0080093dff.shtml

CSS 11503 One-arm Design and Server Default Gateway

Our problem is determining the correct default gateway for our web servers. All IP addresses are in the same subnet (VIP, interfaces, and servers). Should the servers default gateway be the L3 switch, or the CSS?
Thanks!
Tom

Hi Tom,
If you have one arm mode, you might have problems with asymmetric flows, due that the CSS behaves similar to a firewall when it comes to flows, as it needs to see both sides of the flow ( client and server side ) in order to handle things correctly. Having this kind of setup, and even when the server pointing to the CSS as its default gateway, ICMP redirects might force the traffic to change dynamically.
You can put as default gateway the L3 switch, but you need to force the traffic that has been load balanced by the CSS to go back to the CSS, otherwise the flow would fail. You can do this by using a group on the CSS, adding the service with the following command: 'add destination service xxxx'. This would NAT the client's IP address for the VIP that you use on the group and would force the flow to go back to the CSS.
Another thing that you can do is to use the CSS as the server's DG, but you must make sure that all L3 devices, including the CSS have ICMP redirects turned off on this subnet. If you have a firewall on this subnet, you would need to turn off proxy ARP as well.
I hope you find this helpful. Thanks!
Regards,
Jose Quesada.

CSS One Arm Configuration with VIP(non-shared)/IP Interface Redundancy

With Reference to the following CCO documentation;
1). "How to Configure the CSS to Load Balance Using 1 Interface"
In this example, the Real Server's (10.10.10.2 etc) gateway are pointed to the router's gateway(10.10.10.1) and used the 'add destination service' command to NAT the RealServer's IP address back to the VIP (10.10.10.6).
2). "Understanding and Configuring VIP and Interface Redundancy on the CSS11000".
In the interface redundancy configuration, the gateway of the Real Server are configured as the CSS11000's Interface Redundancy Address (192.168.1.1), not the Router's gateway.
Can anyone help to advise on the preferred one arm configuration with VIP/IP redundancy?
(i). Is the reason for configuring the gateway of the Real Server to CSS11000's Interface Redundancy Address in 2) same as using 'add destination service' command in 1)? That is to make sure that the return path from Real Server back to Client passes through the CSS and is NAT back to the VIP.
(ii). To configure VIP(non-shared)/IP Interface redundancy(Active/Backup Mode) in a one arm configuration, my understanding is that there are 2 methods of configuration. Is it correct? Which method is preferred?
Method a)
1.Configure the Real Server's gateway to Router's Gateway
2.Configure 'add destination service' command on the CSS to NAT the RealServer's IP address back to the VIP
3.Configure VIP(non-shared) redundancy for the VIP on the CSS
4.IP Interface Redundancy on the CSS is not required as the Real Server's gateway is already pointing to the Router's gateway. (Assuming that HSRP redundancy is already running on the Router)
Method b)
1. Configure the Real Server's gateway to the CSS's IP Interface Redundancy IP Address
2. Configure IP Interface Redundancy on the CSS (as the Real Server's gateway)
3. Configure VIP(non-shared) redundancy for the VIP on the CSS

if you use method a) (server gateway is the router) you need the CSS to nat
the source ip address of the client in order to force the server to send traffic back to the CSS.
The issue then is that the server does not see the IP address of real client.
The server only see connections with source IP address = CSS ip address.
With method b) you don't have the above problem, but connection initiated by the servers are sent to the CSS that will then send it to the router.
You have a performance issue because the traffic will cross 2 times the one-armed interface.
If this is a new design, it is strongly recommended not to use one-armed setup.
Regards,
Gilles.

One armed bandit and one port to another

I was trying to setup a CSS in one-armed bandit mode for the first time per the URL below. But I want to be able to have arbitrary ports on the "real" servers. E.g. use https://hooty.com as the VIP but on the backend take you to hoot1.hooty.com port 8443 say while http://hooty.com would direct you to hoot1.hoot.com port 8080. Must the port number on the VIP equal the port number on the real server in one-armed-bandit mode?
http://www.cisco.com/warp/public/117/one_armed_bandit.html
group Servers1
vip address 26.19.98.45
add destination service oldwww:80
active
group Servers2
vip address 26.19.98.45
add destination service oldwww:443
css-n1-1(config)# group Servers2
css-n1-1(config-group[Servers2])# active
%% An active source group with that address already exists

The port number of the vip does not have to to be the same as the real server.
You can set the port you want for the real server with the 'port' command under the service definition.
This is true for one-armed or any other type of setup.
The problem in your config is that you can't create 2 groups using the same vip ip address.
So, simply configure all your servers under one group.
ie:
group Servers1
vip address 26.19.98.45
add destination service oldwww:80
add destination service oldwww:443
active
Gilles.

Meaning of one-arm setup and src nat

I've worked previously on CSS platform and recall deploying one-arm mode, which simply meant connecting the appliance via single physical trunk link.
In terms of the ace some docos and ANM seem to suggest that one-arm requires src nat, if true why is that unless one-arm now translates to one-vlan?.
btw i know about asymetric routing and src nat, but what i'm failing to get is how that relates to one-arm.
thanks

Hello Ajaz,
generally the convention is to call one arm those setups where both client and servers, for a certain loadbalanced service (so VIP), belong to the same VLAN, see for example how it's defined here:
http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_%28ACE%29_Configuration_Examples_--_Routing_and_Bridging_Configuration_Examples
not sure whether the definition has changed over time, I would guess that it can be intended in the physical sense (single link) so as you do, or in the logical sense, where 2 VLANs would represent 2 arms even if the physical connectivity is provided through just one link. From my experience, in the LB field the logical interpretation is prevalent.
Thanks,
Francesco

One armed VIP and FTP

I have a need to use the one armed load balance for some servers. I have 4 contens setup using this and I have the four corresponding Groups setup. Two of the contents work fine they are using SSL. The other 2 fail and they are both using FTP. It looks like it is failing on the data channel connection because I can login to the server but cannot get any data. Is there a way to correct this.

check the following URL:
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_tech_note09186a0080093de6.shtml
it explains you need a source group for the ftp data connection.
Since you also need a group to nat client ip address, you have a problem since you can't do both at the same time.
The solution is to use ACL and the 'sourcegroup option'.
So you keep your group but you removed all the service attach inside it.
Then you create an ACL like this one
acl 1
clause 10 permit tcp any destination eq 21 sourgroup
apply circuit(VLAN-client)
acl2
clause 1o permit tcp destination any sourcegroup
apply circuit(vlan-server)
This should work.
If not, make sure to try both passive and active ftp to see if at least one works.
Gilles.

Two circuit vlan in one-armed config mode

Hello.
My client needs to add another vlan to the CSS because he is getting short on ip address. So he decided to add vlan 5, removed the default route to 192.168.12.1 and added two static routes.
However nothing is working now and I can't figure out why.
The initial config was:
!*************************** GLOBAL ***************************
ip route 0.0.0.0 0.0.0.0 192.168.12.1 1
!************************* INTERFACE *************************
interface 1/1
trunk
vlan 12
interface 1/2
admin-shutdown
!************************** CIRCUIT **************************
circuit VLAN12
ip address 192.168.12.22 255.255.255.0
!************************** SERVICE **************************
service www-hux1
port 80
protocol tcp
ip address 192.168.12.24
keepalive type tcp
keepalive frequency 10
keepalive port 80
active
service www-hux2
ip address 192.168.12.25
port 80
protocol tcp
keepalive frequency 10
keepalive port 80
keepalive type tcp
active
!*************************** OWNER ***************************
owner HS
billing-info "ahp"
email-address [email protected]
content rule1
protocol tcp
port 80
add service www-hux2
vip address 192.168.12.27
add service www-hux1
balance aca
active
In the new config this is what's different:
!*************************** GLOBAL ***************************
ip route 192.168.5.0 255.255.255.0 192.168.5.1 1
ip route 192.168.12.0 255.255.255.0 192.168.12.1 1
!************************* INTERFACE *************************
interface 1/1
trunk
vlan 5
vlan 12
interface 1/2
admin-shutdown
!************************** CIRCUIT **************************
circuit VLAN5
ip address 192.168.5.20 255.255.255.0
circuit VLAN12
ip address 192.168.12.22 255.255.255.0
Can you see what's wrong in here?
I almost forgot to teel that the default gateway of real servers is the CSS
Thanks,
Joao Carvalho

Ok. I think I got the problem. The destination of the packet sent by the CSS is a public ip address and none of the static routes matches that.
Now my problem is how can I influence the next hop based on source ip address, in a CSS?
Thanks,
Joao

I have Photoshop CC 2014 the one with Lightroom and I am having problems with Photoshop crashing after about 5 minutes?

After about 5 minutes of Photoshop CC 2014 running it crashes, i have tried running it as an administrator but still crashes.

Adobe Photoshop Version: 2014.0.0 20140508.r.58 2014/05/08:23:59:59 x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
System architecture: AMD CPU Family:15, Model:1, Stepping:0 with MMX, SSE Integer, SSE FP, SSE2, SSE3
Physical processor count: 4
Processor speed: 1497 MHz
Built-in memory: 3563 MB
Free memory: 800 MB
Memory available to Photoshop: 2928 MB
Memory used by Photoshop: 70 %
3D Multitone Printing: Disabled.
Touch Gestures: Disabled.
Windows 2x UI: Disabled.
Image tile size: 1028K
Image cache levels: 4
Font Preview: Medium
TextComposer: Latin
Display: 1
Display Bounds: top=0, left=0, bottom=768, right=1366
OpenGL Drawing: Enabled.
OpenGL Allow Old GPUs: Not Detected.
OpenGL Drawing Mode: Advanced
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: True.
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glgpu[0].GLDriverDate="20111012000000.000000-000"
glgpu[0].CanCompileProgramGLSL=1
glgpu[0].GLFrameBufferOK=1
glgpu[0].glGetString[GL_SHADING_LANGUAGE_VERSION]="4.10"
glgpu[0].glGetProgramivARB[GL_FRAGMENT_PROGRAM_ARB][GL_MAX_PROGRAM_INSTRUCTIONS_ARB]=[2147 483647]
glgpu[0].glGetIntegerv[GL_MAX_TEXTURE_UNITS]=[8]
glgpu[0].glGetIntegerv[GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS]=[32]
glgpu[0].glGetIntegerv[GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS]=[16]
glgpu[0].glGetIntegerv[GL_MAX_TEXTURE_IMAGE_UNITS]=[16]
glgpu[0].glGetIntegerv[GL_MAX_DRAW_BUFFERS]=[8]
glgpu[0].glGetIntegerv[GL_MAX_VERTEX_UNIFORM_COMPONENTS]=[16384]
glgpu[0].glGetIntegerv[GL_MAX_FRAGMENT_UNIFORM_COMPONENTS]=[16384]
glgpu[0].glGetIntegerv[GL_MAX_VARYING_FLOATS]=[128]
glgpu[0].glGetIntegerv[GL_MAX_VERTEX_ATTRIBS]=[29]
glgpu[0].extension[AIF::OGL::GL_ARB_VERTEX_PROGRAM]=1
glgpu[0].extension[AIF::OGL::GL_ARB_FRAGMENT_PROGRAM]=1
glgpu[0].extension[AIF::OGL::GL_ARB_VERTEX_SHADER]=1
glgpu[0].extension[AIF::OGL::GL_ARB_FRAGMENT_SHADER]=1
glgpu[0].extension[AIF::OGL::GL_EXT_FRAMEBUFFER_OBJECT]=1
glgpu[0].extension[AIF::OGL::GL_ARB_TEXTURE_RECTANGLE]=1
glgpu[0].extension[AIF::OGL::GL_ARB_TEXTURE_FLOAT]=1
glgpu[0].extension[AIF::OGL::GL_ARB_OCCLUSION_QUERY]=1
glgpu[0].extension[AIF::OGL::GL_ARB_VERTEX_BUFFER_OBJECT]=1
glgpu[0].extension[AIF::OGL::GL_ARB_SHADER_TEXTURE_LOD]=1
clgpu[0].CLPlatformVersion="1.1 AMD-APP-SDK-v2.5 (775.2)"
clgpu[1].CLPlatformVersion="1.1 AMD-APP-SDK-v2.5 (775.2)"
clgpu[0].CLDeviceVersion="1.1 AMD-APP-SDK-v2.5 (775.2)"
clgpu[1].CLDeviceVersion="1.1 AMD-APP-SDK-v2.5 (775.2)"
clgpu[0].CLMemoryMB=512
clgpu[1].CLMemoryMB=1024
clgpu[0].CLName="BeaverCreek"
clgpu[1].CLName="Caicos"
clgpu[0].CLVendor="Advanced Micro Devices, Inc."
clgpu[1].CLVendor="Advanced Micro Devices, Inc."
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clgpu[1].CLDriverVersion="CAL 1.4.1589 (VM)"
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License Type: Subscription
Serial number: 96040086941066019767
Application folder: C:\Program Files\Adobe\Adobe Photoshop CC 2014\
Temporary file path: C:\Users\Rob\AppData\Local\Temp\
Photoshop scratch has async I/O enabled
Scratch volume(s):
Startup, 445.8G, 83.4G free
Required Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CC 2014\Required\Plug-Ins\
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CC 2014\Plug-ins\
Installed components:
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   dvametadata.dll   photoshopdva   8.0.0
   dvametadataapi.dll   photoshopdva   8.0.0
   dvametadataui.dll   photoshopdva   8.0.0
   dvaplayer.dll   photoshopdva   8.0.0
   dvatransport.dll   photoshopdva   8.0.0
   dvaui.dll   photoshopdva   8.0.0
   dvaunittesting.dll   photoshopdva   8.0.0
   dynamiclink.dll   photoshopdva   8.0.0
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   icudt40.dll   International Components for Unicode 2013/02/25-15:59:15    Build gtlib_4.0.19090
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   WRServices.dll   WRServices Fri Mar 07 2014 15:33:10   Build 0.20204   0.20204
   wu3d.dll   U3D Writer   9.3.0.113
Required plug-ins:
   3D Studio 15.0 (2014.0.0 x001)
   Accented Edges 15.0
   Adaptive Wide Angle 15.0
   Angled Strokes 15.0
   Average 15.0 (2014.0.0 x001)
   Bas Relief 15.0
   BMP 15.0
   Camera Raw 8.5
   Camera Raw Filter 8.5
   Chalk & Charcoal 15.0
   Charcoal 15.0
   Chrome 15.0
   Cineon 15.0 (2014.0.0 x001)
   Clouds 15.0 (2014.0.0 x001)
   Collada 15.0 (2014.0.0 x001)
   Color Halftone 15.0
   Colored Pencil 15.0
   CompuServe GIF 15.0
   Conté Crayon 15.0
   Craquelure 15.0
   Crop and Straighten Photos 15.0 (2014.0.0 x001)
   Crop and Straighten Photos Filter 15.0
   Crosshatch 15.0
   Crystallize 15.0
   Cutout 15.0
   Dark Strokes 15.0
   De-Interlace 15.0
   Dicom 15.0
   Difference Clouds 15.0 (2014.0.0 x001)
   Diffuse Glow 15.0
   Displace 15.0
   Dry Brush 15.0
   Eazel Acquire 15.0 (2014.0.0 x001)
   Embed Watermark 4.0
   Entropy 15.0 (2014.0.0 x001)
   Export Color Lookup NO VERSION
   Extrude 15.0
   FastCore Routines 15.0 (2014.0.0 x001)
   Fibers 15.0
   Film Grain 15.0
   Filter Gallery 15.0
   Flash 3D 15.0 (2014.0.0 x001)
   Fresco 15.0
   Glass 15.0
   Glowing Edges 15.0
   Google Earth 4 15.0 (2014.0.0 x001)
   Grain 15.0
   Graphic Pen 15.0
   Halftone Pattern 15.0
   HDRMergeUI 15.0
   IFF Format 15.0
   Ink Outlines 15.0
   JPEG 2000 15.0
   Kurtosis 15.0 (2014.0.0 x001)
   Lens Blur 15.0
   Lens Correction 15.0
   Lens Flare 15.0
   Liquify 15.0
   Matlab Operation 15.0 (2014.0.0 x001)
   Maximum 15.0 (2014.0.0 x001)
   Mean 15.0 (2014.0.0 x001)
   Measurement Core 15.0 (2014.0.0 x001)
   Median 15.0 (2014.0.0 x001)
   Mezzotint 15.0
   Minimum 15.0 (2014.0.0 x001)
   MMXCore Routines 15.0 (2014.0.0 x001)
   Mosaic Tiles 15.0
   Multiprocessor Support 15.0 (2014.0.0 x001)
   Neon Glow 15.0
   Note Paper 15.0
   NTSC Colors 15.0 (2014.0.0 x001)
   Ocean Ripple 15.0
   OpenEXR 15.0
   Paint Daubs 15.0
   Palette Knife 15.0
   Patchwork 15.0
   Paths to Illustrator 15.0
   PCX 15.0 (2014.0.0 x001)
   Photocopy 15.0
   Photoshop 3D Engine 15.0 (2014.0.0 x001)
   Photoshop Touch 14.0
   Picture Package Filter 15.0 (2014.0.0 x001)
   Pinch 15.0
   Pixar 15.0 (2014.0.0 x001)
   Plaster 15.0
   Plastic Wrap 15.0
   PNG 15.0
   Pointillize 15.0
   Polar Coordinates 15.0
   Portable Bit Map 15.0 (2014.0.0 x001)
   Poster Edges 15.0
   Radial Blur 15.0
   Radiance 15.0 (2014.0.0 x001)
   Range 15.0 (2014.0.0 x001)
   Read Watermark 4.0
   Render Color Lookup Grid NO VERSION
   Reticulation 15.0
   Ripple 15.0
   Rough Pastels 15.0
   Save for Web 15.0
   ScriptingSupport 15.0
   Shake Reduction 15.0
   Shear 15.0
   Skewness 15.0 (2014.0.0 x001)
   Smart Blur 15.0
   Smudge Stick 15.0
   Solarize 15.0 (2014.0.0 x001)
   Spatter 15.0
   Spherize 15.0
   Sponge 15.0
   Sprayed Strokes 15.0
   Stained Glass 15.0
   Stamp 15.0
   Standard Deviation 15.0 (2014.0.0 x001)
   STL 15.0 (2014.0.0 x001)
   Sumi-e 15.0
   Summation 15.0 (2014.0.0 x001)
   Targa 15.0
   Texturizer 15.0
   Tiles 15.0
   Torn Edges 15.0
   Twirl 15.0
   Underpainting 15.0
   Vanishing Point 15.0
   Variance 15.0 (2014.0.0 x001)
   Water Paper 15.0
   Watercolor 15.0
   Wave 15.0
   Wavefront|OBJ 15.0 (2014.0.0 x001)
   WIA Support 15.0 (2014.0.0 x001)
   Wind 15.0
   Wireless Bitmap 15.0 (2014.0.0 x001)
   ZigZag 15.0
Optional and third party plug-ins: NONE
Plug-ins that failed to load: NONE
Flash:
Installed TWAIN devices: NONE
IT CRASHES FOR NO REASON, i can open the programme up and not use it still crashes, I have never had a problem with Windows.

Hello I have a one year account and I am having problems downloading it onto my Macbook... It is telling me that my apps are already up to date when I do not have the softwares downloaded!

nun

CC desktop lists applications as "Up to Date" when not installed
http://helpx.adobe.com/creative-cloud/kb/aam-lists-removed-apps-date.html

Css 11501 basic NAT and PAT configuration

Hi,
I just want to connect with one of my mail servers through css11501
this is my config
-------begin-----
!************************** CIRCUIT **************************
circuit VLAN1
ip address 195.xxx.xxx.xxx 255.255.255.248
no redirects
ip address 10.1.1.1 255.0.0.0
no redirects
!************************** SERVICE **************************
service mx01
max connections 1024
ip address 10.0.2.3
port 25
protocol tcp
active
!*************************** OWNER ***************************
owner mx
content mx-con
add service mx01
protocol tcp
vip address 195.xxx.xxx.xxx
port 25
!*************************** GROUP ***************************
group mx-group
vip address 195.xxx.xxx.xxx
add service mx01
active
----------end---------
but when I connect with 195.xxx.xxx.xxx on 25 port - it writes me "connection refused"
whats wrong with my configuration

as always, the best solution is to capture sniffer traces to figure out what is going on.
From experience I would say you have a one-armed config, and the server response is going directly to the client without going first to the CSS.
I would recommend to remove your line 'add service ...' and replace it with 'add destination service ...'
Regards,
Gilles.

CSS one-armed-config and SMTP reverse lookup problems?

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