Contents

Introduction

Prerequisites

Firewall Rules

References

Introduction

This document describes ports that are needed to be open for operation of Cisco Secure Web Appliance (SWA).

Prerequisites

General Knowledge of Transmission Control Protocol/Internet Protocol (TCP/IP).

Understand Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) differences and behaviours.

Firewall Rules

The table lists possible ports that are needed to be opened for the proper operation of Cisco SWA.

Note: Port numbers are all default values, if any of them have been changed, consider the new value.

Default port

Protocol

InBound/OutBound

Host name

Purpose

20

21

TCP

InBound or OutBound

AsyncOS Management IP.   ( inbound )

FTP server ( outbound )

File Transfer Protocol (FTP) for aggregation of log files.

Data ports TCP 1024 and higher

must also be open

22

TCP

InBound

AsyncOS Management IP

Secure Shell Protocol (SSH) access to the Secure Shell Protocol (SSH),

Aggregation of log files

22

TCP

OutBound

SSH Server

SSH aggregation of log files.

Secure copy protocol (SCP) push to log server.

25

TCP

OutBound

Simple Mail Transfer Protocol (SMTP) server IP

Send alerts via Email

53

UDP

OutBound

Domain Name System (DNS) servers

DNS if configured to use Internet

root servers or other DNS servers

outside the firewall.

Also for SenderBase queries.

8080

TCP

InBound

AsyncOS Management IP address

Hypertext Transfer Protocol (HTTP) access to the Graphical User Interface (GUI)

8443

TCP

InBound

AsyncOS Management IP address

Hypertext Transfer Protocol Secure (HTTPs) access to GUI

80

443

TCP

OutBound

downloads.ironport.com

McAfee definitions

80

443

TCP

OutBound

updates.ironport.com

AsyncOS upgrades and McAfee definitions

88

TCP & UDP

OutBound

Kerberos Key Distribution Center (KDC) / Active Directory Domain Server

Kerberos Authentication

88

UDP

InBound

Kerberos Key Distribution Center (KDC) / Active Directory Domain Server

Kerberos Authentication

445

TCP

OutBound

Microsoft SMB

Active Directory authentication realm (NTLMSSP and Basic)

389

TCP & UDP

OutBound

Lightweight Directory Access Protocol (LDAP ) Server

LDAP Authentication

3268

TCP

OutBound

LDAP Global Catalog (GC)

LDAP GC

636

TCP

OutBound

LDAP over Secure Sockets Layer (SSL)

LDAP SSL

3269

TCP

OutBound

LDAP GC over SSL

LDAP GC SSL

135

TCP

InBound & OutBound

End-point resolution - Port Mapper

Net Log-on fixed port

End-point Resolution

161

162

UDP

OutBound

Simple Network Management Protocol (SNMP) Server

SNMP Queries

161

UDP

InBound

AsyncOS Management IP

SNMP Traps

123

UDP

OutBound

Network Time Protocol (NTP) server

NTP time synchronization

443

TCP

OutBound

update-manifests.ironport.com

Obtain the list of the latest files

from the update server

(for physical hardware)

443

TCP

OutBound

update-manifests.sco.cisco.com

Obtain the list of the latest files

from the update server

(for virtual hardware)

443

TCP

OutBound

regsvc.sco.cisco.com

est.sco.cisco.com

updates-talos.sco.cisco.com

updates.ironport.com

serviceconfig.talos.cisco.com

grpc.talos.cisco.com

IPv4

146.112.62.0/24

146.112.63.0/24

146.112.255.0/24

146.112.59.0/24

IPv6

2a04:e4c7:ffff::/48

2a04:e4c7:fffe::/48

Cisco Talos Intelligence Services

Obtain Uniform Resource Locator (URL) category and reputation data.

443

TCP

OutBound

cloud-sa.amp.cisco.com

cloud-sa.amp.sourcefire.com

cloud-sa.eu.amp.cisco.com

Advance Malware Protection (AMP) Public Cloud

443

TCP

OutBound

panacea.threatgrid.com

panacea.threatgrid.eu

For Secure Malware Analytics Portal and Integrated Devices

80

3128

TCP

InBound

Proxy Clients

Default Clients connectivity to HTTP/HTTPS Proxy

80

443

TCP

OutBound

Default gateway

HTTP and HTTPS Proxy Traffic Out

514

UDP

OutBound

Syslog server

Syslog server to collect logs

990

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are

collected by Cisco Technical Assistance Collaborative (TAC).

File Transfer Protocol of SSL (FTPS) Implicit.

21

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are

collected by Cisco TAC.

FTPS Explicit or FTP

443

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are

collected by Cisco TAC over HTTPS

22

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are

collected by Cisco TAC over SCP and Secure File Transfer Protocol (SFTP)

22

25 (Default)

53

80

443

4766

TCP

OutBound

s.tunnels.ironport.com

Remote access to backend

443

TCP

OutBound

smartreceiver.cisco.com

smart licensing

References

Configure firewall for AD domain and trusts - Windows Server | Microsoft Learn

Security, Internet Access, and Communication Ports (cisco.com)

Required IP and Ports for Secure Malware Analytics - Cisco

Customer File Uploads to Cisco Technical Assistance Center - Cisco

Technote on FAQ for Remote Access on Cisco ESA/WSA/SMA - Cisco

Smart Licensing Overview and Best Practices for Cisco Email and Web Security (ESA, WSA, SMA) - Cisco