Cisco Firewall :: ASA 5505 - Inbound Mail Not Coming
May 31, 2011
Last night I switched out our old Cisco pix 515 with a asa 5505. The config is the same and internet and outgoing mail is working but no mail is coming in. Below is a copy of my config. Why my inbound mail is not coming in.
smtp 192.168.51.248 (Barracuda email filter)pop3 192.168.50.11 (exchange server). Tried to telnet into the firewall but connection timed out. Went to mxtool box and that also timed out while trying to connect to smtp. Port scan from mxtool box timed out too on all ports.
[Code] ........
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Dec 26, 2011
I’m trying to configure my ASA 5505, in order to allow my inbound and outbound mail communications. Here with this mail I’ve attached a diagram which illustrates my exact network setup along with ip addresses.
In this setup I’ve enabled port forwarding on my ADSL router (port 25 and 110) and configured the ASA accordingly, and my mail server is located inside my network.
My problem is currently I can send mails from my inside network to outside but my not receiving any mails which originate from outside. I’ve attached my current ASA configuration as well,
C:UsersSuthakarDocumentsOffice_DocsThakralABC Computers
Final config on ASA5505
host name Cisco
enable password 8Ry2YjIyt7RRXU24 encrypted
password 2KFQnbNIdI.2KYOU encrypted
names
!interface Vlan1
nameif inside
security-level 100
ip address 192.168.155.201 255.255.255.0
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Oct 6, 2011
I configured an ASA 5505 a couple of weeks ago. Every thing is working properly except it sends irritating messages to the syslog server. Her is an example of the message:
%ASA-2-106001: Inbound TCP connection denied from 195.215.221.56/80 to 10.70.13.90/252 flags PSH ACK on interface outside
%ASA-2-106001: Inbound TCP connection denied from 195.215.221.56/80 to 10.70.13.90/2252 flags ACK on interface outside.
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May 12, 2011
how to set up port forwarding for inbound SSH?
The outside interface on the ASA is on DHCP. I have a single dynamic public IP from my ISP. The inside interface provides Internet access for the network using NAT.
I have a server on the internal network with an IP of 192.168.0.6 and I would like to access this via SSH (TCP port 22) from outside.
I've been able to do this in the past on a PIX with a static public IP block, but I'm new to ASA and I don't know how to do it with PAT.
Current running config attached for what it's worth, but it's pretty basic at the moment.
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Nov 22, 2012
I have upgraded an ASA 5505 to 9.0(1) as I would like to use ipv6 version of dhcprelay. That said, I am unable to obtain a global unicast address but the link-local address is able to communication with the ISP's gateway/DHCP provider which I hope will allow v6 dhcprelay provide internal clients with IP's from the ISP. Trouble is, unsolicated inbound ICMPv6 messages from the ISP's gateway are being dropped on the way into outside interface.
%ASA-3-313008: Denied IPv6-ICMP type=129, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
%ASA-3-313008: Denied IPv6-ICMP type=131, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
%ASA-3-313008: Denied IPv6-ICMP type=131, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
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Oct 29, 2012
our FWSM (in 6509) is not coming up, when tried to sesssion up using "Session slot 1 proc 1" command,It is giving error , "Tyring 127.0.0.11 .....connection timed out remote host not responding".
In "show mod" command output at Switch in IOS console: under Card Type Section: it is showing Model & Serial Number correctly, Under MAC address sectino: displaying some MAC address But in Online Diag Status, it showing "Unknown" for Module 1.
We tried re-seating in other slots, but of no use. Giving same error. Some of other forms are saying it is the issue with 128 Mb CF image problem, FWSM is no more reachable from 6509 IOS console. We even tried using FWSM console (using PC-Conse & LCP Console) but FWSM is not contactable.
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Oct 4, 2011
I have problem with traffic coming from GRE interface and going further through FWSM on the same 6509-E chassis.It's very interesting and confusing. If packets are fragmented, I can go through, however, if I use normal packets (usual ping for example) traffic goes from outside to inside and stops on it's way back.
Here is the detailed info:
WS-C6509-E with WS-SUP720-3B
FWSM HW 4.0, SW 4.1(4)
GRE is done in hardware (source is loopback interface - only one loopback per GRE tunnel).
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Apr 6, 2012
I have about 30 remote EZVPN 1811 routers that never come up after a firewall reload for about an hour. I have watched the EZVPN remotes and they believe they still have an IPSEC SA and they never attempt to reconnect until their IKE SA times out. Is there any way I can change this behavior so that the remotes will more rapidly recognize that their SA is invalid and negotiate a new one?
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Apr 25, 2012
Trying a simple Easy VPN connection and getting the following in the error logs:
Built inbound UDP connection 684 for outside:xx.xx.xx.xx/1106 (xx.xx.xx.xx/1106) to identity:xx.xx.xx.xx/500 (xx.xx.xx.xx/500)
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Aug 6, 2012
I am trying to setup an inbound NAT on an ASA5510 running 8.4 code.
object network obj-192.168.1.2
host 192.168.1.2 (internal web server)
object network NAT-external IP
host ** external IP **
object network NAT-external IP
nat (outside,inside) static 192.168.1.2 service tcp https https
access-list outside_access_in extended permit tcp any host 10.2.0.10 eq https
This seems to be setup now?
sh nat
2 (outside) to (inside) source static NAT-*.*.*.* 192.168.1.2 service tcp https https
translate_hits = 0, untranslate_hits = 0
sh access-l
access-list outside_access_in line 2 extended permit tcp any host 192.168.1.2 eq https (hitcnt=27) 0x59383a04
When I try to connect to the external IP using https I get hits on the access list, however the nat translate hits do not go up?Do I need to allow the 192.168.1.2 server back out again?
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Oct 29, 2012
We have a customer who has 4 x 'WS-SVC-FWM-1' modules installed within 2 x 6513 chassis. The FWSMs are all running version 3.1(16) with failover group 1 and 2 enabled.After a few recent planned and un-planned power outages the FWSMs have come up without a full configuration. Is this a common fault? If so it there any kind of workaround that can be implemented?
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Oct 30, 2012
Trying to figure this all out. I'm getting untranslated hits. I posted the config I have so far.
Code...
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Dec 29, 2011
I am trying to configure my ASA5505 to allow SMTP relay and the ACLStatic I created is not working.
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Oct 30, 2012
I have setup an ASA5505 running 8.2 with dual ISP's
Primary link is the current live static route out and the backup picks up if the primary fails. That all works great However I have an issue with inbound NAT rules
I have configured an inbound static on the primary which works great
static (inside,primary) *.*.*.* 10.1.1.1 netmask 255.255.255.255 access-list outside_access_in line 2 extended permit tcp any host *.*.*.* eq 3389 (hitcnt=4)
Question? With the primary link active and the default route pointing out through the primary, am I able to configure an inbound NAT to the same inside host 10.1.1.1
on the backup link?
If the primary fails users will need to be able to connect inbound to this service
When I try to set it up I got this error ERROR: Static PAT using the interface requires the use of the 'interface' keyword instead of the interface IP address
So I tried that and got this error WARNING: All traffic destined to the IP address of the backup interface is being redirected. WARNING: Users will not be able to access any service enabled on the backup interface.
So what is the best practice for configuring inbound NAT for a dual ISP configured ASA
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Apr 20, 2013
I have a 2621 router - old. but works well.Need to put in an ACL to limit the inbound SMTP traffic to be FROM a specific set of IP's, and deny all others.
I have tried various combinations with no luck. Something obvious, I am sure.
When I do a show access lists 160 it shows all SMTP traffic being snagged by the SMTP deny statement. All other traffic works correctly.
Here is my config so far...
Current configuration : 3093 bytes!version 12.2no service single-slot-reload-enableservice timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname xxxxxxxxxx!logging rate-limit console 10 except errorsenable secret 5 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx!ip subnet-
[Code] ....
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May 4, 2011
Configured ASA 5510 with CSC module and working fine.Here i likes to configure, Whenever any users from outside accessing my firewall (like VPN users) that logging information i need to send one particular mail ID.Simply, i likes to enable my fireawall to send logging information to one particular mail id.
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May 31, 2011
Configured ASA 5510 with CSC module and working fine.Whenever any users from outside accessing my firewall (like VPN users) that logging information i need to send one particular mail ID.
Simply, i likes to enable my fireawall to send logging information to one particular mail id.
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Jun 15, 2011
My mail server is not in my network, it's over internet elsewhere.After installing the ASA 5510, i can not get my mails any more.
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Jan 30, 2012
I know I can use the RTR statement to determine when the primary ISP circuit goes down via this technote: url...My question can I assign static Nats on the backup ISP connection to the same inside servers in the dmz.?Example 10.1.1.11 is mapped to ISP1 ExternaIP of 65.217.77.11. Can it 10.1.1.11 also be mapped to ISP2's 208.217.77.11?This way I can get my DNS changed and my inbound traffic to servers in my DMZ on the asa 5510 running 8.0.3 code can continue to receive Inbound traffic.
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Jun 1, 2011
I have ASA 5510 and public FTP server from my local network to external IP address, with static nat translation. All works, but I need request to ftp come from internal ASA interface (need use gateway different ASA). How configured ASA for forwarding request?
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Feb 26, 2012
I have been asked to create an inbound connection on the ASA from the internet to a part of the network that is accessible over the Wide area network eg
-Internet address 94.175.x.100 goes to 151.5.3.100,
-The internal network is 10.42.15.0/22, and connects to the 151.5.3.0/24 network over a private MPLS.
Is this possible with the ASA5510 and if so can you give me a clue how to pass the traffic
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Nov 7, 2012
I have an ASA5510 with 8.3 and a Cisco PIX525 (retiring). The ASA was for VPN traffic only while the PIX was for all other Internet traffic. I'm trying to move all the traffic to the ASA5510 so I used the PIX to ASA migration tool. I migrated the PIX rules over to the ASA5510, however we can't receive email and there is no external access to our internal websites. But the VPN connections remain intact and internal users can get out to the internet.
When I run Packet Tracer on my outside (incoming rules) the packets are dropped at the inside interface. What am I missing?
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Dec 18, 2011
I have successfully been able to allow outbound access from inbound hosts on the appliance; however, I have only one outbound IP address and had to configure outbound access using static PAT. What I need to do is to configure access to certain inbound hosts from outside. What's wrong with my running config? Below are the commands that I believe need to be changed from the configuration. [code]
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Nov 20, 2011
I'm running a Cisco ASA 5510 with version 7.2(3) and I've been tasked with permitting some inbound & outbound TCP & UDP ports to/from a specified address space on the internet.
In looking at my current ASA config I see other access lists already configured so I'm assuming I can just set up a new access list in similar fashion, but I wanted to verify here first.
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Dec 4, 2011
I'm having an issue where our RV042 router is blocking some of our customers from sending us e-mails.I noticed thatCISCO has produced a newer version of the RVO42 V3.0 and has firmware version 4.x. can you upgrade the Linksys RV042 Hardware V 1.2 to the 4.x firmware? I have found a few articles and forums online about otherpeople having the same issue with the RV042 v1 randomly blocking, e-mail but no one ever has a solution to correct the issue.Some people have recommend to roll back to factory default and reconfigure the router as the config may by corrupt.
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Feb 16, 2012
We are using FWSM with software version 4.1(6) with failover and multi contexts.We need to generate and send mail notifications when failover occurs.
With this configuration we are receiving syslog only! [code]
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Jun 13, 2011
I am having an issue with an ASA 5510, running 8.4(1) code, causing outbound mail to remain in the SMTP server queue (Exchange 2007). This only happens with some remote mail servers. The connection usually ends with the remote server eventually sending a TCP reset.
I've taken multiple inside and outside packet traces.Other trace's contain either X's preceding various sections of the stream content or all X's in the content. The X's only appear when inspection is enabled.
Disabling inspection is the only thing that seems to allow mail to flow. I find this curious because I'm running this same ESMTP policy on other ASA's. However, they are on 8.3 code.
Most everything I find when searching on this subject says to disable ESMTP inspection. [code]
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Jun 24, 2012
I have 2 cisco routers that resired on the same interface on Cisco ASA. For security reasons, on both of the routers I have configured default gateway to be ASA interface, then static route between them on the ASA, I get the following error when on station comming from first router trying to connect to another station behind secound router (again, on the same interface, maybe this is the issue?).
ASA-3-106001: Inbound TCP connection denied from flags SYN
There is access list allowing traffic between but hit count is 0
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Oct 18, 2011
allow ports 18082 and 18086 inbound to one of my internal servers. how to create a static nat rule but I dont know how to only allow those two ports. I dont want to open the server to all ports. This is what I am doing via ASDM v6.1:
Configuration-NAT Rule-Add=Add Static NAT Rule
Original
Interface: inside
Source: my internal IP address
Translated
Interface: outside
Use IP Address: my available external IP address
Now under PAT I assume that's where I put the ports, so I place a checkbox on Enable and select TCP. Then I enter 18082 on both the Original and Translated Port boxes. I tried adding 18086 by entering 18082-18086 or with a comma as a separator but it doesnt allow it and spits an error saying that the format is incorrect.
click [OK]
Now is that how I add a single port to forward to my internal server? Do need to create another Static NAT Rule including the second port of 18086
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Apr 5, 2013
I have a RV110W that's been in service since Dec 2012. All Everything is working fine except every month or so the firewall starts blocking all inbound traffic. It does not respond to remote management access. If I reboot the firewall (pwr off/on) everything works correctly for the next month or so and then it begins blocking all inbound traffic again. Local access to the Internet and VPN tunneling are not affected. When it's working, all my rules and port forwarding work correctly.
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Nov 3, 2011
I have a client that has an ASA 5520 that has two internet connections, FIOS and Comcast. The ASA is configured to failover from the FIOS to the Comcast if the FIOS fails. This works perfectly fine. However, I was wondering if VPN and other inbound traffic will come into the secondary connection when it is active. I think VPN will work inbound when the FIOS connection fails, but I am not sure about the other inbound connections.
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Feb 5, 2013
-I need to configure the following on my PIX:
TCP port 2195 - outbound
-TCP port 2196 - inbound
How would I configure this via ASDM?
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Nov 5, 2012
Trying to allow inbound access from any host outside to my LAN server on port 995. [code]
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