Cisco Firewall :: 5510 / L2L Tunnel Keeps Dropping?
May 15, 2013
I have our main site using a Cisco 5510 running 8.4.2 code and a remote site using a Cisco 5505 running 8.4.2 code. The main site has a T1 and the remote site is using a DSL connection. About every other day I have to reset the connection at the remote site. The process that I have found that works is to remove the nat statement, clear the cry ips sa and then add back the nat statement. The connection usually comes back up and a few minutes. I am trying to see what is causing this to drop.
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Jan 23, 2012
I have a Cisco ASA 5510 firewall, my problem is that when the first VPN connections is established everything is good. But when that connections is cancel or terminated due to non connectivity. No one can connect to that firewall through that VPN unless that firewall is restarted.
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May 23, 2011
Firewall ASA5510. I'm planning to get one of ASA5510 for our office in order to secure our network properly, however we have quite specific routing configuration to allow us failover to the remote location (data center) in case of any disaster with our server. I'd like to find out if I can just install firewall between our ISP Ruter and internet and allow traffic to/from Data Centre. In this situation will I have to change routing configuration on Company Router or do I have to do anything with our Company Router
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Nov 27, 2012
I don't know if this is in the right section, but I cannot set up a vpn tunnel between an asa 5510 and a cisco rv042 router. I believe the problem is because i need to set up a nat exempt rule on the rv042 route but don't know how.
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May 9, 2013
I have an ASA 5510 and I am building a site-to-site vpn tunnel, peer on the other end is a sonicwall. I can initiate the tunnel from my end, but when he tries from his end it fails on phase 2 with this error in the logs:
"Rejecting IPSec tunnel: no matching crypto map entry for remote proxy"
Obviously our crypto map's don't match, i have it restricted to specific ports on my end and he had it wide open on his end, but said he is not sure how to restrict it down to specific ports. My question is why would I be able to bring the tunnel up on my end if the crypto map's don't match and he can't bring it up?
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Dec 5, 2012
I have an ASA 5510 and I am building a site-to-site vpn tunnel, peer on the other end is a sonicwall. I can initiate the tunnel from my end, but when he tries from his end it fails on phase 2 with this error in the logs:
"Rejecting IPSec tunnel: no matching crypto map entry for remote proxy"
Obviously our crypto map's don't match, i have it restricted to specific ports on my end and he had it wide open on his end, but said he is not sure how to restrict it down to specific ports. My question is why would I be able to bring the tunnel up on my end if the crypto map's don't match and he can't bring it up?
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Aug 21, 2011
A 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.
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Jun 11, 2012
I working on a security solution using ASA firewall. Is it possible to setup a IPSec tunnels on each subinterface of a physical interface on ASA 5510?
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Mar 17, 2011
I have 2 ASA 5510 firewalls at 2 different sites. Both running on version 8.0.4. Users are using an Instant Messaging type of application provided by a local telco here which is able to send and receive SMS using SIP (from the packet capture that I've done).
When users use the IM in site A, they are able to send and receive text messages via the IM from behind the firewall. However, when the users are in site B, users are able to send out text messages but not able to receive them.
I noticed that when I remove "inspect sip" from site-B's global policy map, users from site-B can successfully receive text messages. I have confirmed that it is the firewall that drops the packets as I have captured the inside and outside interfaces of site-B's ASA and I can see the incoming sip "request: MESSAGE" packet on the outside interface but I do not see the packet exiting the inside interface.
I have cross check both firewall configurations, and I do not see anything suspicious commands relating to sip that might cause this issue. Is there any command to troubleshoot why the sip inspection is dropping the sip packets on site-B?
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Oct 24, 2012
I have a dynamic VPN site to site between a Firewall ASA 5510 with ASA version 8.2(1) (firewall ASA have a Static IP 201.111.14.114) and a C870 ISR (the ISR have a dynamic IP). The tunnel and the conectivity in both sides is successfull, however each time that occurs a interface restart because the Internet link is unstable in ISR side the VPN tunnel does not going to UP STATE again
These are the ISR logs listed when VPN going to DOWN
*Mar 10 13:58:45.157: %LINK-3-UPDOWN: Interface ATM0, changed state to down
*Mar 10 13:58:46.157: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to down
[Code]......
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Oct 3, 2012
I am not a ASA expert but I have configured them few times. I have a vision of a task I have to complete but not sure if it is practical or how to go about doing it.
We two locations, Location A and Location B. Both locations have a 100MB internet conection. Location A has a ASA 5510. Location B has a 5505. Users at both locations access the internet via their respective ASA. Location A is the headquarters and Location B is a disaster recovery site. We want to setup a tunnel between both ASAs. This tunnel will be used to replicate data between the two locations for DR purposes. We need the users to still use the same pipe to get to the internet but want to allocate 10MB for internet use and the remaining 90MB for the DR tunnel.
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Jul 19, 2011
So I've run into a problem on my ASA5510, post-upgrade I can no longer connect to the inside interface from across our L2L VPN. I've tried both ASDM and SSH and the connections fail. I see in the logs that the attempt is being made, but it will eventually time out. There have been no problems with this type of connection with any previous upgrades, just this particular upgrade, I went from 8.4(1) to 8.4(2). I don't see much in the release notes or anything in a pre/post config diff that jumps out as a cause to this behavior. The only thing I did see in the release notes "CSCtg50770 Mngt-access (ASDM,SSH) to inside intf of 5580 fails over RA VPN session" which sounds like it could be my problem, but that was in the "Fixed in 8.4(2)" section and says it's for a 5580, maybe the fix for the 5580 broke it on a 5510??? I hope not and that I'm simply missing some new setting that I need to enable for this type of connection as this device is in a remote office.
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Nov 22, 2011
How would I go about configuring RADIUS based AAA for remote access VPN users? I have an OSX RADIUS server and an ASA 5510
(I want to keep console and SSH using LOCAL, so I keep this: "aaa authentication ssh console LOCAL", right?)What does the rest of the config look like to get RADIUS based AAA for remote access VPN users?
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May 28, 2012
I have a ASA 5510 that has multiple site to site VPNs. I need to create an additiona site to site VPN but only allow 1 host to access and traverse the tunnel. The network is on a 192.168.5.x but the host that will need to access this tunnel needs to be on a 172.16.33.x network. I dont want any other traffic allowed to access or traverse the VPN tunnel for this host. How can I set this up?
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Jan 7, 2013
We have approx. 40 branch offices that connect to our core IOS Firewall (2951) over ipsec VPN Tunnel. One particular site has been facing issues over the past few days. This site will sporadically drop it's VPN Tunnel and reestablish after a few seconds. If I run debug crypto ipsec and crypto isakmp on the site that is dropping, it is constantly going through the DPD process. If I run these same commands on another site, they seem to run DPD at all.
Here is some of the output I am seeing on the site that is failing.
Jan 8 11:18:38.873 AST: %FW-6-DROP_PKT: Dropping tcp session 111.222.3.106:50083 96.16.47.144:80 due to Stray Segment with ip ident 54856 tcpflags 0x5004 seq.no 2154004347 ack 0
Jan 8 11:18:46.061 AST: ISAKMP (4028): received packet from 111.222.255.106 dport 500 sport 500 Global (I) QM_IDLE
Jan 8 11:18:46.061 AST: ISAKMP: set new node -1497488895 to QM_IDLE
Jan 8 11:18:46.061 AST: ISAKMP:(4028): processing HASH payload. message ID = 2797478401
Jan 8 11:18:46.061 AST: ISAKMP:(4028): processing SA payload. message ID = 2797478401
[code]....
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Jul 3, 2011
I have a ASA 5505 VPN Concentrator using ADSM 5.2 connecting to a BEFSX41 router. Its a pretty simple set up that has been working for years. However, over the past several weeks the VPN tunnel is consistently dropping every day or two, however both side are able to ping the internet at all times. My current work around is to manually log into the BEFSX41 router and re-connect the VPN tunnel, which simply connects immediately. The tunnel will stay up for about a day or two until it reliably drops the tunnel connection. Every time the tunnel drops I get an alert with an error message: [code] After doing searches about what this error means, all I can find is that its supposed to mean there is a problem with the encryption keys. I have checked the keys many times over and everything is the same. I find it odd that nothing has changed in almost 2 years.
I have 10 other VPN connections that are always up at never have any problems. I have the same make/model router connected to other offices with no problems. I have swapped the router twice, and each time I get the same symptoms.
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Dec 12, 2012
We have a Cisco ASA and recently purchased a cisco small business srp527 router. It is connected to our ADSL2 connection and is working fine. I have configured the device with an ipsec tunnel using an ike profile and the tunnel is created successfully with packets traversing the tunnel. However packets are being dropped intermittently, with no cause. The link is currently not being utilised, there is no load on the network however when I ping Google and any address subject to the rules of the tunnel i notice that a single packet is dropped every now and then.
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Jul 4, 2011
We have an ASA 5510 and are having issues supporting a client in Europe. After about 5 minutes (sometimes it will last up to 30 minutes) we drop the connection with Reason 412: The remote peer is no longer responding. We are using the Cisco VPN client with the newest software version. We have also tried this on both 32 bit and 64 bit OS's. We have no issues VPNing to any other clients or with anyone VPNing into us. It's only with the client in Europe. We are able to VPN into their US site without any problems. They also claim they have no issues with anyone else VPNing into them.
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Jun 11, 2013
We currently run dual ASA 5510's in A/S config on our main campus. We would like to create a VPN tunnel to a branch campus. Trying to decide between a 5505/5510/5512x, We would like to extend many of the capabilities of our network to the branch campus which will be 20-50 users on a 50mb/10mb internet connection.
Domain login
System Center workstation management
Cisco WCS
Shoretel voip
(Cisco NAC?)
Several different VLANs for wireless guest, student traffic, staff traffic, voip traffic, etc. Which device would be best and should we get the security plus license with it?
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May 2, 2012
I have two 5510's that I am trying to get a tunnel established. One has an exsistinig tunnel to a 5505 that works but I cant get the next one to get past the first phase. I have sanitized the attached configs
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May 30, 2012
I had a pix that had two working tunnels going to one 5510 and one 5520. Today the VPN tunnel to our 5520 stopped working but if I do sh cry isa sa both tunnels have QM_IDLE as the state. (both ends) I tried to debug crypto isakmp 255 but all I get is PEER_REAPER_TIMER and no other output on the pix side.
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Dec 12, 2011
I am using a Cisco ASA 5510. Our tunnels always drop due to inactivity, which is a security issue I understand, and it only takes some "interesting traffic" to bring it back up. My problem is that it looks like the interesting traffic has to originate from my side of the tunnel, when our clients send traffic and the tunnel is down due to inactivity it does not come back up. Is there a setting that I am overlooking that will make it come back up no matter who sends traffic? Or, is there a way to make it stay up through inactivity?
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Apr 25, 2013
I have been struggling to come up with the proper config to do a NAT of an incoming VPN tunnel to a VLAN on my network. I have an ASA 5510 with an IPSEC site-to-site tunnel to a partner network of 166.110.0.0/17.I have several VLANs on the ASA interface behind a cat4500 router (192.168.100.024, 172.16.4.0/24, 166.110.128.0/22 etc). The only network that the partner network sees is the 166.110.128.0/22.My problem is that I need to give them access to a node on my 192.168.100.0/24 net, but can't get the admin on the other side to add a route and adjust his tunnel.
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Dec 5, 2010
I've a asa 5510 on the main site and different ASA 5505 on secundary sites for VPN tunneling between the sites. The problem is that the tunnels are acomplished but no traffic is going over them. What am i doing wrong? For the moment there is a ASA 5505 on the main site managing the tunnels but I want the 5510 to take over the job.
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Mar 5, 2012
I'm attempting to debug an ipsec tunnel on an ASA 5510 (8.4(3)) and when I turn on `debug crypto ipsec` and then execute `logging monitor` I get an constant stream of TCP debugging events, is it possible to only view ipsec messages?
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Nov 7, 2012
I have an ASA 5510 at V8.2(5) with something near 20 site to site VPN tunnels. I am having a problem with 1 tunnel to a RVS4000. The tunnel is completely closed and reset during Phase2. Here is a small snipet at the time of the tunnel reset
x.x.x.x, Username = x.x.x.x, IP = x.x.x.x, Session disconnected. Session Type: IPsec, Duration: 7h:36m:30s, Bytes xmt: 333755, Bytes rcv: 86281, Reason: User Requested
Followed by Group = x.x.x.x, IP = x.x.x.x, Active unit receives a centry expired event for remote peer x.x.x.x.
We use a number of connection oriented sessions and this blowing them out of the water. all other tunnels are up for DAYS to more than a Month.
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Jun 8, 2011
I got a stange vpn problem, just added a new vpn tunnel to our ASA5510 and then the users report that the traffic through the tunnel is very slow, when I try it myself I get a speed like 50kb/sec to the internal server.If I use our regular tunnel or any other tunnel the speed is just fine. I´ve added the new tunnel in the same way as the other tunnels, that is thorugh ASDM vpn wizzard.
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May 13, 2011
I would like to ask some question about VPN clinet and SSL VPN, on my ASA 5510 i have many tunnel-group it have around 5 tunnel-group and i have one SSL VPN,i also have user 20 user. let me show you that:
1- tunnel-group Staff-VPN remote-access
2- tunnel-group Manager-VPN remote-access
3- tunnel-group normalstaff-VPN remote-access
4- tunnel-group guest-VPN remote-access
5- tunnel-group other-VPN remote-access
and tunnel-group sslgroup type remote-access
and i have user around 20 user and i want to specific user to tunnel-groups like this
1- tunnel-group Staff-VPN remote-access
username AAA password AAA
username AAA01 password AA01
2- tunnel-group Manager-VPN remote-access
username BBB password BBB
username BBB01 password BBB01
3- tunnel-group normalstaff-VPN remote-access
username CCC password CCC
username CCC01 password CCC01
5- tunnel-group other-VPN remote-access
username DDD password DDD
username DDD01 password DDD01
So, How can i manag tunel-groups with user?
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Mar 31, 2012
We are using a 5510 and have issues trying to use VPN with full tunnel to connect from inside the firewall to a customer site. I don't seem to have a problem when using split tunnel profiles. How would you troubleshoot this?
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Jul 31, 2012
I have a 5510 and a 5505 that I'm attempting to configure a simple VPN tunnel over. I have tried step by step configurations form CISCO ASA configs, as well as every source I can find. I have walked throught the config with IOS commands as well as Wizards. All my packets are dropped at the the inside or outside interface.
When I show SH ISAKMP command all I get are 0's straight down.
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Nov 5, 2011
I am trying to setup a VPN tunnel between a Cisco ASA 5510 (Version 8.2(2)) and Sonicwall TZ200. I got tunnel up and going and I am able to ping the Cisco ASA internal IP from the Sonicwall LAN but nothing else works.
When I try to ping a host behind the Cisco ASA from the Sonicwall LAN I get the following message "Asymmetric NAT rules matched for forward and reverse flows;
[code]...
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Apr 3, 2011
I have 2 Cisco 871 set up to vpn in to an ASA 5510. Everything has worked even when the 871 is behind a nat.
We use these routers to send to employees home for temporary use.
The WAN ports on the 871 are configured to pick up an IP via DHCP.
Office ASA 5510 - Public IP address
WAN - Public IP
Internal - 192.168.1.0/24
|
Internet
|
Home Router
WAN - Public IP
Internal - 192.168.1.0/24
|
Cisco 871 picks up 192.168.1.x on WAN port from user's home router
Internal vlan1 192.168.10.x/24
The problem is - this user's home router is using the same subnet as the internal network at the office. Is there anyway to force traffic bound for 192.168.1.x to go over the VPN tunnel? It does this correctly if the 871's WAN port is not also on the same subnet. The vpn tunnel does come up. And I can ping to and from the router, it's just the clients behind the 871 that cannot ping or access the corp network.
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Apr 18, 2012
We have a ASA 5510 (v8.2.2 with ASDM 6..4.7, 256Mb mem) with a license for 250 VPN Peers. The machine has currently one site-to-site VPN active. I've added a remote-access IPSec VPN for some users but when connecting from the remote site the connection is dropped and the ASA reports %ASA-4-713239 Tunnel Rejected : The maximum tunnel count allowed has been reached.
I've searched for info relating to this message but I found none. Before I plan a restart (it's up for 222 days), is there something I could do on CLI to fix this ?
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