I am new to the ASA series and I am at a complete loss as to why I cannot configure this router to forward SMTP and RDP traffic to an internal host.
The packet trace tool in ASDM shows complete end-to-end connectivity for RDP but it still fails to connect from outside. This is my config file, what I need to change in order to make it work?
Up until recently one of my sites was able to get to a postilion subnet. Then we started receiving "host unreachable" e-mails. Posting told us SMTP traffic was not getting let in. I've compared the current config to a config that was saved before the issue popped up and found really no noticeable difference.
I tried a packet tracer trace with no luck: SiteB- Firewall# packet-tracer input outside tcp 11.2.2.36 12345 65.19.0.0 25.
Phase: 1
Type: FLOW-LOOKUP
Subtype:
Result: ALLOW
Config:
Additional Information:
Found no matching flow, creating a new flow
[code]...
Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: outside
output-status: up
output-line-status: up
Action: drop
Drop-reason: (acl-drop) Flow is denied by configured rule
Attached is a sanitized config. I'm not entirely convinced it's a firewall issue, but I need to some successful testing to prove otherwise.
I am a total Cisco novice who has just had a ASA5505 installed to replace a linux freeware firewall (smoothwall).I'm told that the 5505 can't port forward traffic (e.g. ssh) from two external IP addresses to two internal destination machines via the same port # (22 in this example).
View 9 Replies View RelatedI have a cisco ASA5505, it runs a wide site to site VPN network and has 4 servers connected to it
10.50.15.4 > fileserver
10.50.15.5 > domain controller (exchange)
10.50.15.6 > terminal server
10.50.15.7 > terminal server
Now yesterday i removed 10.50.15.6 and replaced it with a new terminal server with the same ip address, ever since the ASA is blocking traffic between it and the domain controller (example)
2Oct 27 201214:51:0510600710.50.15.655978DNSDeny inbound UDP from 10.50.15.6/55978 to 10.50.15.5/53 due to DNS Query What has me baffled is the only thing different between today and yesterday is the new server is windows server 2008 and the old one was windows server 2003. The new server has the same LAN ip address as the old one to make the changeover seamless for the users.
why all the sudden my ASA has decided to block the traffic between those machines? all the other machines can talk to it fine just not the domain controller, and seeing that this is a terminal server naturally you can see the problem i face!
this router has worked flawlessly for 2 years now without any config changes and i cant work out why its blocking traffic between those 2 machines.
we have a Cisco 2901 as a router on a stick for several vlans. Everything on the segment routes fine and accesses the internet just as they should. The 2901 connects to an ASA5505 on port 0/1. Any host connected to the ASA5505 can access the internet, but can not ping into any of the vlans off of the 2901. The strange thing is on either segement of the network I can ping all of the gateways. What is even more strange is when I run wireshark from behind the firewall going into the 2901 I can not see the packet on another wireshark instance behind the 2901. However if I start a ping for a host host behind the asa I can see the packet in wireshark on the host, which I am trying to ping, hit the gateway.
View 15 Replies View RelatedWe have an ASA5510 with the IPS ASA-SSM-10 module installed. All is working well except event notification. When sending a test email from the SSM IPS, we get the error "could not connect to SMTP host". The Exchange SMTP host does allow traffic from the IPS and ASA. I can ping to the SMTP host by IP and name. What am I missing here?
View 3 Replies View RelatedI am trying to configure my ASA5505 to allow SMTP relay and the ACLStatic I created is not working.
View 1 Replies View RelatedOn remote site I have Cisco ASA5505, on cental site I have Cisco 2811 router, working site-to-site VPN tunnel. [code]
View 1 Replies View RelatedUsing an ASA5505, have 1 static outside address, want to access an inside SBS-Server on SMTP, RDP (3389), HTTPS and port 987
Have configured network object nat rules using the asdm, SMTP works (I can telnet to the server on port 25 from outside), however for some reason I can not telnet inside and out on port 25, so outgoing mail does not work. RDP does not seem to work from outside, 987 I havent tested from outside. When I try to create a network object nat rule for https I get this message from the ASA:
[OK] object network SBS-HTTPS
object network SBS-HTTPS
[ERROR] nat (inside,outside) static interface service tcp https https
NAT unable to reserve ports.
Most examples of NAT translation using an ASA 8.4 are based on servers within a DMZ. In my case it's not because the mailserver also functions as an data and Active Directory server for my local domain. If tried to config the ASA for a while now and throw it in the corner for a couple of months out of frustration. Now I got some time left during christmas break I decided to start again.My purpose is to NAT SMTP / POP traffic from the internet, trough the ASA to my (inside) server. This is what I got so far. With this config I'm unable to telnet the inside server (192.168.1.10) from a remote location.
ASA Version 8.4(3)!hostname ciscoasaenable password cE8UUNd encryptedpasswd 2KFQ.2KYOU encryptednames!interface Ethernet0/0switchport access vlan 2!interface Ethernet0/1!interface Ethernet0/2!interface Ethernet0/3!interface Ethernet0/4!interface Ethernet0/5!interface Ethernet0/6!interface Ethernet0/7!interface Vlan1nameif insidesecurity-level 100ip address 192.168.1.253 255.255.255.0!interface Vlan2nameif outsidesecurity-level 0ip address 95.*.*.218 255.255.255.248!ftp mode passiveobject network obj_anysubnet 0.0.0.0 0.0.0.0object network server1_smtphost 192.168.1.10object network server1_pop3host 192.168.1.10access-list outside_access_in extended
[code]....
I can ping 192.168.1.10 from the ASA CLI. I can Ping DNS 4.2.2.2 from the CLI (internet access). I can Telnet the server from the inside LAN, using: telnet 192.168.1.10 25.But I can't Telnet from an outside location using: Telnet 95.*.*.218 25 Because my server is on the Inside interface (diffenrent subnet) do I need an additional route?
I'm new to ASA's and PIX units. I've setup a few VPN's now but know next to nothing about logging on these units. I read the config guide for the PIX, but cannot figure out how to get a log of incoming SMTP traffic going on the console.Do I need to use a SYSLOG server? I can probably set one up on my laptop.
View 1 Replies View RelatedWe just changed ISPs and now have a /29 routed subnet to be used on our ASA 5510 (8.4) instead of the one public ip we had before.There are a couple of PAT translations that were previously setup on the "interface" address which i now want to assign to a different ip address further in my subnet.
So i just changed this:
object network BMMM
nat (inside,outside) static interface service tcp smtp smtp
to:
object network BMMM
nat (inside,outside) static other.external.ip.in.subnet service tcp smtp smtp
And assumed that this would work,y it does not, and this leaves me unable to contact that machine from the outside.And shoud i also change my access-list?The relevant access-list rule is:access-list outside_in extended permit tcp any object BMMM eq smtp
I am not very familiar with ASA 5520 yet.I have been able to allow the OUTSIDE world to connect via SSH to the intermal host 172.17.2.50 on my DMZ network. I've created a NAT rule and an ACL as written on the configuration below.
Now I need the INTERNAL network to ssh 172.17.2.50 but ASA stops me with the following error: [code]
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
View 5 Replies View RelatedA recently added outbound rule has left my SMTP communications broken. I have since removed the rule, and had Cisco do some damage control, but it's still dropping some of the SMTP traffic. I get a number of NDR messages each day like the one below:Your message did not reach some or all of the intended recipients. Subject: RE: Christopher, Curt Sent: 8/19/2011 9:38 AM The following recipient(s) could not be reached:
[URL]
on 8/21/2011 9:49 AM
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
<630.SM.Local #4.4.7>
Your message did not reach some or all of the intended recipients. Subject: RE: Christopher Curd Sent: 8/19/2011 9:38 AM The following recipient(s) could not be reached: JWillar@email.com on 8/21/2011 9:49 AM Could not deliver the message in the time limit specified. Please retry or contact your administrator. <630.SM.Local #4.4.7>
I've attached an image of my configuration (ASDM GUI). The part of the image highlighted in green are the SMTP rules. The part highlighted in yellow is another rule that I added about a month ago to block a SYN attack. This rule may be part of the problem because of the order it is in the list. Not sure, though.
I have had two Cisco techs Putty into my ASA to check things out. I think they've done all they can. I wonder at this point if it be wise to just reload the last good running-config I have prior to the Outbound rule being added.
We are using several Cisco ASA 5505 with the 8.05 OS on it. The problem is that the SMTP traffic of my ISP(Telenet) isn't passtrough the ASA, I'm using outlook 2010. Before there was also a problem with our local exchange server but I solved this by disabling ESMTP checking in the policies, but it didn't worked for my local ISP.
View 4 Replies View RelatedI just try to ping a internal Host but it want to go.
Laptop<===>ASA5505
Connected is the Laptop at Ethernet 0/2 Inside
My running-config is a clear config, only VLAN 1 has a IP and Ethernet 0/2 is up.
But If I try to ping to the Laptop I get the followed:
asa5505# ping 192.168.1.100
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.100, timeout is 2 seconds:
?????
Success rate is 0 percent (0/5)
asa5505#
From the Laptop to the ASA5505 I can Ping successfully.
I have Cisco ASA 5505 installed and use as default gateway. I go to Internet through the ASA5505 Here is my Problem.I can not ping from ASA prompt(ASA#) to my Laptop connected to the ASA, but i can ping the ASA inside interface from laptop i can not use ASDM and the VPN Tunnel is not working between the sie
ASA# ping 10.10.10.12
???????????
100% lost
Laptop c
C:/ping 10.10.10.1
!!!!!!!!!!!!!!!!
Here is the Topology
INTERNET .<=========================>ASA<===============================> LAPTOP
I disabled window firewall on the Laptop , but no goof result.
i've a cisco asa5505 on adam 6.4 and a dvr i would like to forward the ports 9000 and 85 in order to monitor the dvr from outside?
View 1 Replies View RelatedWe have configured ASA 5510. We have configure Ethernet 0/0 ( Outside ) connected with ADSL line and Ethernet 0/1 ( Inside ) Local LAN. we have configured NAT and all the traffic is passing through outside interface. Now we have connected ethernet 0/3 ( leasedline ) interface with static public IP. Now we want to allow SMTP traffic to pass through from this interface.
How to configure it if we want our local lan SMTP traffic sending through new leased line ( Static Public IP ).
I am working on replacing our Checkpoint Firewalls with ASA's, and am running into the following NAT problem. On some of our Checkpoints, there are external NAT's that are mapped to multiple internal hosts based on ports.Is there any way to translate that to the ASA? I'm not sure the ASA will let you have multiple internal hosts mapped to one external IP using static NATs. The main issue, is these are alarm panels that receive data from external hosts (the traffic is initiated externally on the Internet) so I can't use dynamic PAT with this.
View 1 Replies View RelatedI have an ASA5505 running ver 8.0(2). I have configured the ssh timeout, ssh host commands and did the crypt o key gen. I am unable to access the device from the host I am allowing. Is there like ca save all command required? I am trying to use the default pix and telnet password. Do those still work?
View 3 Replies View RelatedWe have an internal DNS server that all internal hosts do lookups to .. these requests are forwarded onto open dns for anything the dns server isnt authoritative for.. My question is we have purchased the botnet filter and this requires the asa5505 dns client to be active on at least one interface .. Should i point the asa dns to an external IP such as 8.8.8.8 and apply DNS enabled on interface outside ( am using asdm) I don't want the ASA to control DNS for our internal clients we already have a internal server for this, i DO want the asa5505 to check dns packets against its botnet filter, whilst still using open dns for forwarding.
View 1 Replies View Relatedwe have a cisco ASA5505 with base license and 3 interface configured. Internal 192.168.1.1/24 DMZ 172.16.0.1/24 Outside 20.20.20.20/24 The DMZ is configured to allow the traffic pass to the outside interface only (base license allow only traffic to one interface) in order to let clients on this network to browse internet. On the outside interface there's a nat configuration that let the port 443 to be natted to an in internal server. Is it possible to let the clients in DMZ to access to the internal server on port 443 from the outside interface?
View 3 Replies View RelatedASA 5505 Firmware 8.3(4), ADSM 6.4(2).I have a public IP address of 168.87.3.4.I need to forward ports (5060, 5080, etc.) to one internal address. (192168.1.1).I need to foward different ports (10020-10080) to a different internal address (192.168.1.2) Everything I read tells me how to do this in a 1 to 1 static NAT.
View 1 Replies View RelatedI'm able to build my tunnel but unable to RDP nor ICMP back to the internal network.
VPN Client IP: 192.168.200.200
INTERNAL IP: 172.17.130.200
my configuration is below:
HOME-ASAFW02(config)# wr t: Saved:ASA Version 8.4(4)!hostname HOME-ASAFW02domain-name hsd1.nj.comcast.netenable password ViPq56cvd3SGvB08 encryptedpasswd 8bcozHCAwCqA5BmN encryptednames!interface Ethernet0/0description OUTSIDE-Connectionswitchport access vlan 2switchport protected!interface Ethernet0/1description INSIDE-Connectionswitchport protectedspeed 100duplex full!interface Ethernet0/2description WiFi-LinkSYSswitchport access vlan 3switchport protected!interface Ethernet0/3shutdown!interface Ethernet0/4shutdown!interface Ethernet0/5shutdown!interface Ethernet0/6shutdown!interface Ethernet0/7shutdown!interface Vlan1description INTERNAL-Networknameif insidesecurity-level 100ip address 172.17.130.129 255.255.255.128!interface Vlan2description OUTSIDE-Link-to-ISPnameif
[code]....
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
View 7 Replies View RelatedOn a 2821 Router with 15.1(3)T1
I have an IPSec VPN and NAT configured. Return traffic from an internal NAT host seems to be blocked by the WAN inbound ACL. What is the proper way to allow return traffic from the Internet for this internat NAT host? Note: As a test, removing the deny entry on the WAN ACL allows return traffic.
I need to configure my ASA 5520 version 7.3 firewall to translate our SMTP server residing in local LAN to use different IP address from the outside interface which is used by all other computers to access Internet. Under NAT section, I have NATted this internal SMTP server with different IP address(eg x.x.x.1) and also translated the remaining IP addresses in the LAN to the outside interface(eg x.x.x.2)
my problem is, Whenever i check the header for message coming from the smtp server it shows that, the SMTP server is also translated by using the same outside interface public ip address(i.e x.x.x.2) which is used by other client machine to access internet instead of the x.x.x.1. How I can get my SMTP server to use separate IP and avoid to be blacklisted by some domain.
i have reviewed this configuration a couple of times and I am not seeing my error. I have two internal subnets, in different VLANs with the ASA being the default router. The internal zone works fine, but the zone called wireless on VLAN 13 doesn't. The firewall blocks all communications and the rules look correct to me. I want all traffic on this wireless subnet to be allowed to cross over the firewall and NAT to the outside interface, just as the inside zone does.
View 1 Replies View RelatedI used the GUI configuration tool for this ASA 5505. When I install it no traffic passes. I am wondering to verify my config. I have masked the usernames for VPN with xxxxxx and yyyyyy. [code]
View 6 Replies View RelatedI am trying to setup my very first ASA5505 and I cannot get it to pass traffic from the inside to the outside. I am not using NAT/PAT. Here is what I have done so far.
ASA5505(config)# interface Vlan 1ASA5505(config-if)# nameif insideASA5505(config-if)# security-level 100ASA5505(config-if)# ip address 33.46.132.34 255.255.255.248ASA5505(config-if)# no shut
[Code]....
Then from the asdm I permited everything from inside to go out but I cannot get any traffic through. I can ping the outside if I source the outside interface but not if I source the inside. The logs would not show me anything.
I did a packet tracer and it indicates the implicit deny rule at the end of the access-list is stopping my traffic eventhough I have allow rules above it?
I also checked the box in the asdm to allow traffic to pass without NAT
I'm usually not working with this product, but this is what I'm trying to do.I have 2 internal networks setup on our Cisco ASA 5505 firewall. (not done by me, I'm a new to this product)I'm trying to access a server on one network from a PC located on the other internal network. (preferable through the web gui)When I try "Packet Tracer" from interface "Trust4" it fails on the NAT phase.(Source ip: 10.0.4.99, Destination ip: 10.0.6.99)
When I check the NAT rule, it says:
Type Source Interface AddressDynamic any outside outside.