Cisco Routers :: RV042 Hardware V 1.2 Firewall Is Blocking Some Incoming Mail
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issue where our RV042 router is blocking some of our customers from sending us e-mails.I noticed thatCISCO has produced a newer version of the RVO42 V3.0 and has firmware version 4.x. can you upgrade the Linksys RV042 Hardware V 1.2 to the 4.x firmware?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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Apr 23, 2012
If I have the IP ACL firewall enabled in my RVS4000 I have trouble connecting to specific websites and also connecting to Apple's update servers. The problem appears to be that the firewall is blocking incoming data to the ephemeral ports even when they are allowed in the firewall rules. I've also tried port forwarding rules but the only thing that resolves the problem is to disable the firewall entirely, which is not the desired resolution. The firmware version is 2.0.27.
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Nov 8, 2012
I have an SA520 that is being used as a front end firewall. Behind it I have an IP PBX. The VOIP provides are registered and I can make outgoing calls. However It appears that the SA520 is either blocking or not routing the calls. I have opened the ports recommended by both the IP PBX and the VOIP provider. What do I need to do to make incoming calls through the SA520?
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Sep 28, 2011
Just installed a RV042 with dual wan connections. Would like to make the WAN 2 (new cable modem as well) the primary connection over WAN1 (DSL), however whenever I switch from WAN1 to WAN2 in Smark Link set up, our email server will not send mail out, even though nothing is blocking the connection.
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Jan 31, 2012
I am trying to block certain domain, i used "domain" and "domain.com" in the forbidden domains , but when people access the website as https://domain.com the website loads perfect. Http is block however. I tried to block "https://domain.com", but that didn't work.
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Dec 28, 2012
I wonder if I can have a RV042 VPN Tunnel to a RV082, and in the RV082 block all traffic to the internet that comes form the PCs that are behind the RV042.
Remote PC -> RV042 -> VPN -> RV082 -> RV082 Firewall (block internet traffice, allow intranet traffic)
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Feb 16, 2012
We have had our router and remote computers set up with Quick VPN for over a year. We've had our share of problems but have worked around them.
Now, out of the blue, no one can connect to the VPN. I went in to try to do some 'troubleshooting' and the ONLY thing that allows our VPN connection to go through is to completely disable the RV016 firewall. We have too many remote users to actually start and stop the firewall everytime someone needs the VPN connection.
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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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Mar 20, 2013
I recently bought my daughter a refurshed dell 17" laptop which has Windows 8 home edition on it. She also has another smaller laptop with windows 7 on it, an X-box-360 and a PS3 all connected to this RV042 Business router.
I do not have access to the firmware version of the RV042. I believe it was updated in 2011 or early 2012.
We found out that with the RV042 firewall set to ON, she is UNABLE to hit her college website with the new win 8 computer
She CAN go to the college web site with the smaller win 7 computer when the firewall is off or on.
The win 8 computer will allow google searches, but when you click on any of the links, it will not load.With the win 8 computer, facebook will not load, MSN and Hotmail will not load.
Disable firewall, and most (if not all) items that did not work, magically DO work when the RV042 firewall is disabled for the win 8 laptop.
Having issues with with win 8 home edition and the RV042 firewall enabled? Is there a "simple" cure for this, other than slicking the laptop and putting win 7 on it?
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Jan 14, 2013
this is regarding my RV042. Its firmware version is v4.1.1.01-sp (Dec 6 2011 20:03:18), unchanged from how I received it. I purchased less than a month ago. I have a problem wherein the firewall behavior is not what I expect it to be, where I expect only allowed ports/services to be open to a given private IP from the outside but am finding that all are open to that private IP!
Let me describe the current configuration. I am going to blank out all digits of the public IP addresses when discussing them except for the final digits for security reasons.Router's WAN1 is set up as static, X.X.X.189. This is part of my public IP block. WAN2 is disabled. One-to-One NAT is enabled. Three instances of it are set up. One, for example is 192.0.2.89 (a private IP) mapped to X.X.X.180, a public IP, part of our public block. Forwarding is not enabled. There is no DMZ Host. That is set to 192.0.2.0. Firewall and SPI are Enabled. Access Rules for the firewall are set up in addition to the default rules which are present to Deny all traffic with WAN1 and WAN2 as the source from any source to any destination. This to me means that unless I set up Allow actions, there should be no access from the outside, WAN1. As an example of one of my Allow rules, I have this:
Action: Allow
Service: HTTP
Log: Not log
Source interface: WAN1
Source IP: ANY
Destination IP: Single, 192.0.2.89
Time: Always
My problem: My expectation is that based on the One-to-One NAT setting, the public IP X.X.X.180 is now associated with the private IP 192.0.2.89, but nothing from public to private is allowed unless allowed by the firewall, which is only set to allow HTTP / port 80 to 192.0.2.89. But the behavior is that 192.0.2.89 is, as presently configured, open to everything from the associated public IP, not just port 80, but all ports! It is as if my firewall rules have no impact whatsoever.
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Sep 9, 2011
Replaced an older RV042 that had damage from lightning. The new RV042 is V03 with firmware 4.0.0.7. This router supports 7 branch offices using site-to-site VPN to other RV042 routers. After connecting the new RV042 at the main office, three of the branch offices had very slow response over the VPN tunnel. I disabled the firewall on the new RV042 and the problem resolved. The three branches with the problem have Windows 7 systems and the other 4 have Windows XP. I confirmed that the Windows firewall was disabled on the Windows 7 systems.I did try leaving the firewall enabled and disabling SPI, but that didn't work. Have to have firewall disabled to resolve the problem. I would not expect the firewall on the main office RV042 to affect VPN tunnel traffic, but apparently it does. Do we need specific access rules to fix the issue. It works fine with firewall disbaled, but I'd be more comfortable with it enabled.
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Aug 25, 2012
I need to configure a new RV042 behind a SSG5 firewall. All VPN connections is client to gateway.
Firstly, i tried doing a direct connection(bypassing the firewall), the quickVpn status says connect but I can't even ping the rv. I suspect is due to client own ip is 192.168.1.x and the gateway ip is also 192.168.1.10. How do I resolve this such that users can connect anywhere without having to worry about clash of ip?
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Apr 8, 2012
I wanna block the Lan IP address(eg:192.168.2.106) to visit wan web, and allow it to lan.How can i set it in access rules?
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Feb 5, 2013
I have an RV042 which is being used as an interface to an ISP.The WAN address (public) is obtained via PPPoE.The LAN address (also public) is entered manually from an assigned block of public addresses. This is the internet gateway for other publicly-addresses devices like firewalls, VPN devices, etc.
I have an RV042 to play with as will as one in production that I can access.Because the accesses are both through public addresses, I want to use https to access the device. I've generated a number of questions as I'm not sure the behavior is understandable to me and maybe the behavior isn't even consistent.
- If the firewall is Disabled, the https setting is still available. So, presumably https will work with the firewall enabled or disabled? Is that right?
- I take it that the Remote Management setting and port number are associated with the WAN port. For example, can one set Remote Management ON with port 443 and still access via the LAN on port 80? on port 443?
- If Remote Mangement is OFF then I presume that one cannot access the device through the WAN. Yet, that seems to not be the case. I wonder if the public addresses on this device affect this?
Well, I guess we might forget about the Port number and just ponder the following - Sort of a truth table:
Remote OFF
http...........WAN access: NO LAN access: YES
https..........WAN access: NO LAN access: YES
Remote ON
http...........WAN access: YES LAN access: YES
https..........WAN access: YES LAN access: YES
This is what it would seem to me to be but it doesn't seem to work that way.
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Oct 6, 2011
if possible with the RV042.Primary External IP address uses port forwards for some ports, all okay.I would like to have other external ip addresses assigned to machines on my lan.Basic host multiple web servers, on different IP addresses, using port 80. [code]
From what i am reading, it looks like the RV042 can do this, but I am not real clear what my rules should look like.
I would think my high priority rule for each external IP address would be to deny all traffic first for each machine on the lan.Then create one entry with source 202.x.x.2 port 80 -> 192.168.168.2 ?
How should I set my rules to do this, and what settings should I have on the Nic of the second machine?
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Oct 13, 2011
I have a new (about 4 months old) RV042 V3 4.0.0.07 firmware that I am trying to use in fail over mode. I have a SOHO and I normally use cable Internet connection. It is quite fast (15 megabit), but not super reliable. I have added DSL (3.3 megabit) which is five nines (supposedly) but not so quick.
I have a Westell 7500 wireless DSL modem located in the basement, where the telephone lines enter the building. This gives me a wireless link to the second floor server room through a wireless router that connects to WAN 2 of the RV042. The cable modem is in the server room and connects directly to the WAN 1 of the RV042. The cable works, but when it goes down, the DSL link comes up but does not allow Internet traffic. The RV042 is set up as a Bridge and I have set up port forwarding to get the cable to work and used similar firewall commands to route the traffic if the router switched over. I suspect that the problem is in the port forwarding (port 80) or the firewall rules(which are pretty simple) because everything looks like it switches over, but it just doesn't work on WAN2.
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Jun 9, 2012
I'm trying to set up a RV042 to do the following:
1) Block all WAN connections, except for:
2) Allow all port 80 connections, and forward to 10.4.20.60
3) Allow all port 443 connections, and forward to 10.4.20.60
4) Allow port 22 connections from specific IP addresses, and forward to 10.4.20.60
5) After a remote client has connected using Client to Gateway VPN, allow that remote client to access anything on the LAN
I'm able to do #1-4 above, but I can't get #5 to work. Or I can get #5 to work, but can't implement the restrictions I need in #1-4. Attached are some relevant screenshots. I think the problem is that I have Forwarding rules set up that require me to have a firewall rule to Deny All Traffic from WAN1 (unless I'm specifically allowing it). In the Access Rules screenshot, rule #6 is the problem. If I enable it (thereby denying all WAN1 traffic), then VPN clinents can't access anything on the LAN. However if disable this rule, VPN clinents can access anything on the LAN, but the firewall also opens up all outside connections to SSH, since that's set up in the Forwarding rules. I would have thought that once a remote client is connected using client to gateway VPN, then that client is considered to be on the LAN, as far as the firewall is concerned. Thus a firewall rule (like #6) that is specified for WAN1 shouldn't effect remote VPN clients.
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Mar 31, 2013
I have 2 questions to confirm and/or get direction on how to modify.
1) is there a way to get around the (seemingly arbitrary) class C (slash 24+) subnet restriction for the primary/main IP address for the internal LAN?
(I realize I can setup multiple internal subnets but that also seems to introduce restrictions for port ‘forwarding’ and ‘one-to-one NAT’ use because those features seem to be restricted to the primary/main IP subnet)
2) it seems like all traffic is passed to the host on the internal side of a ‘One-to-One NAT’ regardeless of the firewall rules in place, is that what is be expected?
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Nov 1, 2011
We have a setup where our e-mail server is hosted in-house.Our network is connected through a RV042 gateway. Port 25 is forwarded to our internal e-mail server.Our smtp service should be limited to receiving incomming connections only from 4 specific ip ranges which I set up in the firewall rules.The reason is that all smtp is managed and protected by an external anti-spam/vires provider.
However it looks like any computer is able to connect to our port 25 and be forwarded to our e-mail server.Does portforwarding overrule firewall rules - ie. you can not limit access with the firewall if you decide to port forward?Is this a "fixable" situation - or is the RV042 not built for handling this setup?
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Nov 15, 2011
I recently installed an RV042 v1.1 vpn router (older hardware revision but using the latest available firmware 1.3.12.19-tm) and set up VPN access with the QuickVPN client. QuickVPN requires that the HTTPS setting be enabled under the Firewall options, so I did. I then scanned our static IP with grc.com's ShieldsUP! to check for open or non-stealthed ports and discovered that ports 80 and 443 show as wide open, while port 113 is closed but not stealthed. If I disable the HTTPS setting under Firewall, then ports 80 and 443 become stealthed. Is there any way to use QuickVPN and keep these ports stealthed?
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Jun 4, 2013
I have a RV042 router on a single WAN and an internal LAN. I have configured port forwarding as follows: HTTP[TCP/80~80]->10.0.0.6HTTPS[TCP/443~443]->10.0.0.6IMAP[TCP/143~143]->10.0.0.5IMAP SSL[TCP/993~993]->10.0.0.5SMTP SSL[TCP/587~587]->10.0.0.5
Everything works just fine when I have the firewall DISABLED. However, when I enable it the behaviour is erratic. 1 out of 10 attempts to connect to ANY port forwarded works. Almost all attempts time out. Notice that this happens even if using only the default firewall rules (which should be bypassed by the port forwarding as I read in other posts).
My second try was to create firewall rules manually, overriding the default ones. I tried adding rules from source WAN1 (where my connection is) to ANY and to SINGLE IP's on every port. Nothing seems to work.
I don't know what I'm doing wrong, this is really bugging me. I had to turn the firewall off so we can access our servers from outside the office. This shouldn't have to be done.
Just found out that my firewall is getting LOTS and LOTS of Blocked - SYN Flood entries. I think this is why we are having trouble with the firewall. Could this be the problem? I have no idea where all these SYN packets are coming from since they appear with spoofed IPs or come from different bots all over.
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Aug 5, 2011
I am using an RV042 router/firewall -- firmware v1.3.13.02-tm -- connected to a cable modem.I have one public address (WAN1) assigned by my ISP's DHCP server.All my machines on the LAN have static IPs. (RV042 DHCP Server is disabled.)I have set up port (80) forwarding to 192.168.1.101 The HTTP port forwarding does work if an http client on the LAN sends a request to http://<public-ip>:80But I cannot get a response if I send a request to http://<public-ip>:80 from a machine on the WAN.
I did configure Access Rules to allow http traffic (and then tried to allow *all* traffic) between a single IP on the WAN and 192.168.1.101 The incoming log table shows a connection is made from the http client on the internet to the correct http server on the LAN, but there is no resonse from the LAN to the remote client.Is my configuration the problem, or is this feature not supported by the RV042 router? Could my cable modem be blocking outbound traffic?
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Jul 23, 2012
I use a RV082 with dual Wan and I cannot configure two SMTP.
Without authentication; a SMTP is specific of the provider.
When WAN1 comes down, SMTP to be used is the SMTP corresponding to WAN2 and vice versa.
Implementation of authentication with the mail server wil be useful. Possibility of two mail servers with indication of the corresponding WAN is also useful.
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Aug 20, 2011
having trouble to configure the Cisco SRP527w where we have two incoming VLAN's.
1. vlan1 is for internet (20mbps)
2. vlan2 is for a specific application (Specific IP Address - 10mbps)
Somehow we are unable to configure the router to enable PC's connected to the router to access both vlan based to the application specific vlan. Its always routing it through the internet.
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Sep 3, 2012
I have in my work RV016 10/100 16-Port VPN Router, working Ok and connected with 3 ADSL internet lines.
1- The problem is that when any line disconnect from internet it supposed to log this disconnection in internet in system log but it does not
2- I can't understand the option of sending mail with the logs, does it send when i press the button EMAIL LOG NOW, or it supposed to send when any log is added? and how to configure it.
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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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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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Oct 12, 2011
Just purchased a Cisco RV110W for our small business. We were told this was easy for us to use and secure enough for our small office and for our travelling sales staff to access our website.
We purchased 2 dedicated IP-addresses, 216.82.5.230 for access to one server, and 216.82.5.231 for access to a second server (these IP-Addresses given are just an example; not real).
These come into the single RV110W WAN port. The two servers are plugged into 2 of the 4 LAN ports.
But the WAN setup page only accepts one WAN IP-Address. So when we put in 216.82.5.230, the outside world can HTTPS into one server, but we don't know how to get them to HTTPS to the second server when the other staff uses 216.82.5.231.
In summary, how to use the RV110W admin panel to forward the HTTPS/SSL traffic from 216.82.5.230 to one server (setup internally on 192.168.10.20), and the HTTPS/SSL traffic from 216.82.5.231 to the other server (setup internally on 192.168.20.20 using the VLAN setup on this router)?
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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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Dec 4, 2011
Cisco RV016 Small Business Router (firmware version 4.0.4.02-tm) . We have several old RV series Linksys, and the interface seem identical to this new Cisco version so it isnt difficult to have it configured. However, I am facing issues. I cannot ping from untrust to WAN IP of the router. However pinging from trust to any IP is just fine.
I tried disabling firewall, I also created a firewall rule that allows all ICMP from ANY to ANY. I also tried All traffic from Any to Any. But still the WAN1 and WAN2 IP addresses (Multiple ISP) still does not reply to ICMP.
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Feb 14, 2013
I have a Cisco wag120n adsl modem. I am setup with a SIP provider, so all my incoming and outgoing calls use SIP.So my question is, how does my ADSL modem handle incoming SIP calls,e.g the SIP call comes in and reaches my adsl modem. Then, how does the modem find the actual port that has my ATA adaptor (analog phone) or CME router attached ? I know port forwarding would handle this, but I am not actually using any configured port forwarding rules.
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