Cisco vpn ports
Sophos xg firewall (v17): cisco ipsec vpn client (for apple
If you can, stop using the IPSEC VPN client and instead use the anyconnect client. (On the IPSEC client, Cisco’s support is limited to retired, with no 64-bit support.) On the public interface of the ASA, no external open ports are needed. It decides if an incoming link is a VPN connection and attempts negotiation using its own smart detection mechanism. (This isn’t the case if you need SSL or WebVPN, which both need open web ports on the outside interface.) Cisco products come pre-installed with the theory of “close anything and open what you want” (opposite from the MS theory of open everything and then try to secure later.). Furthermore, configuring a NAT/PAT on the public WAN port adds an extra layer of “you still can’t come in” because special ACLs are needed within the NAT configuration even for permitted traffic.
There’s one thing Cisco doesn’t tell you about, and it irritates most Cisco administrators to hear about it. Anyconnect will not work until you have installed at least the Anyconnect essentials license key. Even if it indicates valid licensing for Anyconnect clients, the service is disabled unless the essentials license is activated. The license would set you back a little more than $100. I tell anyone who buys ASAs from me that this should be part of their initial investment.
Cisco tech talk: ssl vpn settings on rv34x series routers
Most Cisco AnyConnect VPN setups I see in the field, or have deployed myself, are terminated on a Cisco ASA firewall with direct internet access. However, in some larger networks, a second firewall in front of the remote access / VPN block in your network, or an access-list on the routers at the internet edge, is not uncommon.
When comparing the Cisco AnyConnect solution to the old IPSEC remote access based solution, everybody knows the tale of how “it only works everywhereTM.” That story is based on the fact that SSL network traffic (TCP/443) is enabled in most guest and mobile networks. This is correct; AnyConnect will work properly if DNS and TCP port 443 are both accessible. AnyConnect, on the other hand, will attempt to use the DTLS protocol, which uses UDP port 443, first, and if that fails, the client will fall back to SSL for user data transport. AnyConnect prefers DTLS because it has less latency due to the connectionless nature of UDP, and therefore has better efficiency than an SSL tunnel.
Cisco 4-port 10/100 vpn router
AnyConnect uses TCP port 443 (HTTPS/SSL), so if you only have one public IP address and need to forward that port to a web server or an internal host, you’re in trouble. AnyConnect’s port can, of course, be changed so that it no longer operates on TCP port 443.
Keep in mind that https is a well-known port for secure web traffic, and it’s open in most areas. You use it to make online payments and to perform banking transactions. As a consequence, it can be reached from most networks and via most firewalls. This is why AnyConnect is so useful; if you change the port, you can encounter link issues.
How to configure port forwarding on cisco asa?
The Cisco AnyConnect Secure Mobility Client program can be used by TU Dresden institutes and facilities to provide secure access to the TU Dresden network from their respective institute networks.
For SSL VPN to work, you’ll need Cisco AnyConnect client software. A valid ZIH Login is required to download software due to trademark and licensing laws. For the first installation, you’ll need admin privileges.
The Windows installation files must be *.msi files, and the Transform-File must be *.mst. If this does not function automatically, right-click on the connection and select “save goal as…” from the drop-down menu. After that, pick “All files” and finish the file names with “.msi” and “.mst” respectively. The file is now properly saved.